Windows Analysis Report
018292540-LetterReguranPPI-20230814215304.PDF.exe

Overview

General Information

Sample name: 018292540-LetterReguranPPI-20230814215304.PDF.exe
Analysis ID: 1560895
MD5: 667060459d876845db2677ddc3d58488
SHA1: 800f741383f4f4027d70a5942fe4b263b592eed5
SHA256: 3e080ccb41529931481861828df6a2ca32b039ed0217adcecb832547d8da0566
Tags: exeFakePDFgeoGRCuser-NDA0E
Infos:

Detection

Remcos
Score: 100
Range: 0 - 100
Whitelisted: false
Confidence: 100%

Signatures

Antivirus detection for URL or domain
Found malware configuration
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Sigma detected: Suspicious Double Extension File Execution
Suricata IDS alerts for network traffic
Yara detected AntiVM3
Yara detected Remcos RAT
.NET source code contains potential unpacker
AI detected suspicious sample
C2 URLs / IPs found in malware configuration
Contains functionality to register a low level keyboard hook
Contains functionality to steal Chrome passwords or cookies
Contains functionality to steal Firefox passwords or cookies
Contains functionalty to change the wallpaper
Delayed program exit found
Initial sample is a PE file and has a suspicious name
Injects a PE file into a foreign processes
Installs a global keyboard hook
Machine Learning detection for sample
Uses an obfuscated file name to hide its real file extension (double extension)
Abnormal high CPU Usage
Allocates memory with a write watch (potentially for evading sandboxes)
Binary contains a suspicious time stamp
Contains functionality for read data from the clipboard
Contains functionality to check if a debugger is running (IsDebuggerPresent)
Contains functionality to download and launch executables
Contains functionality to dynamically determine API calls
Contains functionality to enumerate process and check for explorer.exe or svchost.exe (often used for thread injection)
Contains functionality to enumerate running services
Contains functionality to launch a control a shell (cmd.exe)
Contains functionality to modify clipboard data
Contains functionality to query CPU information (cpuid)
Contains functionality to query locales information (e.g. system language)
Contains functionality to read the PEB
Contains functionality to read the clipboard data
Contains functionality to retrieve information about pressed keystrokes
Contains functionality to shutdown / reboot the system
Contains functionality to simulate mouse events
Contains functionality which may be used to detect a debugger (GetProcessHeap)
Contains long sleeps (>= 3 min)
Creates a process in suspended mode (likely to inject code)
Detected TCP or UDP traffic on non-standard ports
Detected potential crypto function
Extensive use of GetProcAddress (often used to hide API calls)
Found a high number of Window / User specific system calls (may be a loop to detect user behavior)
Found potential string decryption / allocating functions
HTTP GET or POST without a user agent
IP address seen in connection with other malware
May sleep (evasive loops) to hinder dynamic analysis
Queries the volume information (name, serial number etc) of a device
Sample file is different than original file name gathered from version info
Suricata IDS alerts with low severity for network traffic
Uses 32bit PE files
Uses Microsoft's Enhanced Cryptographic Provider
Uses code obfuscation techniques (call, push, ret)
Yara signature match

Classification

Name Description Attribution Blogpost URLs Link
Remcos, RemcosRAT Remcos (acronym of Remote Control & Surveillance Software) is a commercial Remote Access Tool to remotely control computers.Remcos is advertised as legitimate software which can be used for surveillance and penetration testing purposes, but has been used in numerous hacking campaigns.Remcos, once installed, opens a backdoor on the computer, granting full access to the remote user.Remcos is developed by the cybersecurity company BreakingSecurity.
  • APT33
  • The Gorgon Group
  • UAC-0050
 https://malpedia.caad.fkie.fraunhofer.de/details/win.remcos

AV Detection
barindex
Antivirus detection for URL or domain
Source: oyo.work.gd Avira URL Cloud: Label: malware
Found malware configuration
Source: 00000003.00000002.4563518017.000000000117A000.00000004.00000020.00020000.00000000.sdmp Malware Configuration Extractor: Remcos {"Host:Port:Password": ["oyo.work.gd:3142:1"], "Assigned name": "Host", "Connect interval": "1", "Install flag": "Disable", "Setup HKCU\\Run": "Enable", "Setup HKLM\\Run": "Enable", "Install path": "Application path", "Copy file": "remcos.exe", "Startup value": "ios", "Hide file": "Disable", "Mutex": "jkm-I9KENP", "Keylog flag": "1", "Keylog path": "Application path", "Keylog file": "logs.dat", "Keylog crypt": "Enable", "Hide keylog file": "Disable", "Screenshot flag": "Disable", "Screenshot time": "1", "Take Screenshot option": "Disable", "Take screenshot title": "", "Take screenshot time": "5", "Screenshot path": "AppData", "Screenshot file": "Screenshots", "Screenshot crypt": "Disable", "Mouse option": "Disable", "Delete file": "Disable", "Audio record time": "5", "Audio folder": "MicRecords", "Connect delay": "0", "Copy folder": "vlc", "Keylog folder": "pdf", "Keylog file max size": "100"}
Multi AV Scanner detection for submitted file
Source: 018292540-LetterReguranPPI-20230814215304.PDF.exe ReversingLabs: Detection: 60%
Yara detected Remcos RAT
Source: Yara match File source: 0.2.018292540-LetterReguranPPI-20230814215304.PDF.exe.4cd7ae0.1.unpack, type: UNPACKEDPE
Source: Yara match File source: 3.2.018292540-LetterReguranPPI-20230814215304.PDF.exe.400000.0.unpack, type: UNPACKEDPE
Source: Yara match File source: 0.2.018292540-LetterReguranPPI-20230814215304.PDF.exe.429e908.2.unpack, type: UNPACKEDPE
Source: Yara match File source: 3.2.018292540-LetterReguranPPI-20230814215304.PDF.exe.400000.0.raw.unpack, type: UNPACKEDPE
Source: Yara match File source: 0.2.018292540-LetterReguranPPI-20230814215304.PDF.exe.4cd7ae0.1.raw.unpack, type: UNPACKEDPE
Source: Yara match File source: 0.2.018292540-LetterReguranPPI-20230814215304.PDF.exe.429e908.2.raw.unpack, type: UNPACKEDPE
Source: Yara match File source: 00000003.00000002.4563518017.000000000117A000.00000004.00000020.00020000.00000000.sdmp, type: MEMORY
Source: Yara match File source: 00000003.00000002.4563140092.0000000000400000.00000040.00000400.00020000.00000000.sdmp, type: MEMORY
Source: Yara match File source: 00000000.00000002.2121163899.0000000004CD7000.00000004.00000800.00020000.00000000.sdmp, type: MEMORY
Source: Yara match File source: 00000000.00000002.2121163899.00000000041D9000.00000004.00000800.00020000.00000000.sdmp, type: MEMORY
Source: Yara match File source: Process Memory Space: 018292540-LetterReguranPPI-20230814215304.PDF.exe PID: 1224, type: MEMORYSTR
Source: Yara match File source: Process Memory Space: 018292540-LetterReguranPPI-20230814215304.PDF.exe PID: 6380, type: MEMORYSTR
AI detected suspicious sample
Source: Submited Sample Integrated Neural Analysis Model: Matched 100.0% probability
Machine Learning detection for sample
Source: 018292540-LetterReguranPPI-20230814215304.PDF.exe Joe Sandbox ML: detected
Uses Microsoft's Enhanced Cryptographic Provider
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Code function: 3_2_004315EC CryptAcquireContextA,CryptGenRandom,CryptReleaseContext, 3_2_004315EC
Source: 018292540-LetterReguranPPI-20230814215304.PDF.exe, 00000000.00000002.2121163899.0000000004CD7000.00000004.00000800.00020000.00000000.sdmp Binary or memory string: -----BEGIN PUBLIC KEY----- memstr_84dc048d-d
Uses 32bit PE files
Source: 018292540-LetterReguranPPI-20230814215304.PDF.exe Static PE information: EXECUTABLE_IMAGE, 32BIT_MACHINE
Source: 018292540-LetterReguranPPI-20230814215304.PDF.exe Static PE information: DYNAMIC_BASE, NX_COMPAT, NO_SEH, TERMINAL_SERVER_AWARE
Source: Binary string: zjeK.pdb source: 018292540-LetterReguranPPI-20230814215304.PDF.exe
Source: Binary string: zjeK.pdbSHA256y source: 018292540-LetterReguranPPI-20230814215304.PDF.exe
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Code function: 3_2_0041A01B FindFirstFileW,FindNextFileW,RemoveDirectoryW,SetFileAttributesW,DeleteFileW,GetLastError,FindClose,RemoveDirectoryW,FindClose, 3_2_0041A01B
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Code function: 3_2_0040B28E FindFirstFileW,PathFileExistsW,FindNextFileW,FindClose,FindClose, 3_2_0040B28E
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Code function: 3_2_0040838E __EH_prolog,__CxxThrowException@8,FindFirstFileW,FindNextFileW,FindClose,FindClose, 3_2_0040838E
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Code function: 3_2_004087A0 __EH_prolog,FindFirstFileW,FindNextFileW,FindClose,FindClose, 3_2_004087A0
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Code function: 3_2_00407848 __EH_prolog,FindFirstFileW,__CxxThrowException@8,FindNextFileW,FindClose, 3_2_00407848
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Code function: 3_2_004068CD FindFirstFileW,FindNextFileW, 3_2_004068CD
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Code function: 3_2_0044BA59 FindFirstFileExA, 3_2_0044BA59
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Code function: 3_2_0040AA71 FindFirstFileA,FindClose,DeleteFileA,GetLastError,DeleteFileA,GetLastError,FindNextFileA,FindClose, 3_2_0040AA71
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Code function: 3_2_00417AAB FindFirstFileW,FindNextFileW,FindNextFileW, 3_2_00417AAB
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Code function: 3_2_0040AC78 FindFirstFileA,FindClose,DeleteFileA,GetLastError,FindNextFileA,FindClose,FindClose, 3_2_0040AC78
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Code function: 3_2_00406D28 SetEvent,GetFileAttributesW,DeleteFileW,ShellExecuteW,GetLogicalDriveStringsA,DeleteFileA,Sleep,StrToIntA,CreateDirectoryW, 3_2_00406D28

Networking
barindex
Suricata IDS alerts for network traffic
Source: Network traffic Suricata IDS: 2036594 - Severity 1 - ET JA3 Hash - Remcos 3.x/4.x TLS Connection : 192.168.2.5:49707 -> 154.216.20.185:3142
C2 URLs / IPs found in malware configuration
Source: Malware configuration extractor URLs: oyo.work.gd
Detected TCP or UDP traffic on non-standard ports
Source: global traffic TCP traffic: 192.168.2.5:49707 -> 154.216.20.185:3142
HTTP GET or POST without a user agent
Source: global traffic HTTP traffic detected: GET /json.gp HTTP/1.1Host: geoplugin.netCache-Control: no-cache
IP address seen in connection with other malware
Source: Joe Sandbox View IP Address: 178.237.33.50 178.237.33.50
Suricata IDS alerts with low severity for network traffic
Source: Network traffic Suricata IDS: 2803304 - Severity 3 - ETPRO MALWARE Common Downloader Header Pattern HCa : 192.168.2.5:49709 -> 178.237.33.50:80
Source: unknown UDP traffic detected without corresponding DNS query: 1.1.1.1
Source: unknown UDP traffic detected without corresponding DNS query: 1.1.1.1
Source: unknown UDP traffic detected without corresponding DNS query: 1.1.1.1
Source: unknown UDP traffic detected without corresponding DNS query: 1.1.1.1
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Code function: 3_2_0041936B InternetOpenW,InternetOpenUrlW,InternetReadFile,InternetCloseHandle,InternetCloseHandle,InternetCloseHandle, 3_2_0041936B
Source: global traffic HTTP traffic detected: GET /json.gp HTTP/1.1Host: geoplugin.netCache-Control: no-cache
Source: global traffic DNS traffic detected: DNS query: oyo.work.gd
Source: global traffic DNS traffic detected: DNS query: geoplugin.net
Source: 018292540-LetterReguranPPI-20230814215304.PDF.exe, 00000003.00000002.4563518017.000000000117A000.00000004.00000020.00020000.00000000.sdmp, 018292540-LetterReguranPPI-20230814215304.PDF.exe, 00000003.00000002.4563667041.00000000011C3000.00000004.00000020.00020000.00000000.sdmp, 018292540-LetterReguranPPI-20230814215304.PDF.exe, 00000003.00000002.4563667041.00000000011B6000.00000004.00000020.00020000.00000000.sdmp String found in binary or memory: http://geoplugin.net/json.gp
Source: 018292540-LetterReguranPPI-20230814215304.PDF.exe, 00000000.00000002.2121163899.0000000004CD7000.00000004.00000800.00020000.00000000.sdmp, 018292540-LetterReguranPPI-20230814215304.PDF.exe, 00000000.00000002.2121163899.00000000041D9000.00000004.00000800.00020000.00000000.sdmp, 018292540-LetterReguranPPI-20230814215304.PDF.exe, 00000003.00000002.4563140092.0000000000400000.00000040.00000400.00020000.00000000.sdmp String found in binary or memory: http://geoplugin.net/json.gp/C
Source: 018292540-LetterReguranPPI-20230814215304.PDF.exe, 00000003.00000002.4563667041.00000000011B6000.00000004.00000020.00020000.00000000.sdmp String found in binary or memory: http://geoplugin.net/json.gpl

Key, Mouse, Clipboard, Microphone and Screen Capturing
barindex
Contains functionality to register a low level keyboard hook
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Code function: 3_2_00409340 SetWindowsHookExA 0000000D,0040932C,00000000 3_2_00409340
Installs a global keyboard hook
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Windows user hook set: 0 keyboard low level C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Jump to behavior
Contains functionality for read data from the clipboard
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Code function: 3_2_0040A65A OpenClipboard,GetClipboardData,CloseClipboard, 3_2_0040A65A
Contains functionality to modify clipboard data
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Code function: 3_2_00414EC1 OpenClipboard,EmptyClipboard,GlobalAlloc,GlobalLock,GlobalUnlock,SetClipboardData,CloseClipboard,OpenClipboard,GetClipboardData,GlobalLock,GlobalUnlock,CloseClipboard, 3_2_00414EC1
Contains functionality to read the clipboard data
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Code function: 3_2_0040A65A OpenClipboard,GetClipboardData,CloseClipboard, 3_2_0040A65A
Contains functionality to retrieve information about pressed keystrokes
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Code function: 3_2_00409468 GetForegroundWindow,GetWindowThreadProcessId,GetKeyboardLayout,GetKeyState,GetKeyboardState,ToUnicodeEx, 3_2_00409468

E-Banking Fraud
barindex
Yara detected Remcos RAT
Source: Yara match File source: 0.2.018292540-LetterReguranPPI-20230814215304.PDF.exe.4cd7ae0.1.unpack, type: UNPACKEDPE
Source: Yara match File source: 3.2.018292540-LetterReguranPPI-20230814215304.PDF.exe.400000.0.unpack, type: UNPACKEDPE
Source: Yara match File source: 0.2.018292540-LetterReguranPPI-20230814215304.PDF.exe.429e908.2.unpack, type: UNPACKEDPE
Source: Yara match File source: 3.2.018292540-LetterReguranPPI-20230814215304.PDF.exe.400000.0.raw.unpack, type: UNPACKEDPE
Source: Yara match File source: 0.2.018292540-LetterReguranPPI-20230814215304.PDF.exe.4cd7ae0.1.raw.unpack, type: UNPACKEDPE
Source: Yara match File source: 0.2.018292540-LetterReguranPPI-20230814215304.PDF.exe.429e908.2.raw.unpack, type: UNPACKEDPE
Source: Yara match File source: 00000003.00000002.4563518017.000000000117A000.00000004.00000020.00020000.00000000.sdmp, type: MEMORY
Source: Yara match File source: 00000003.00000002.4563140092.0000000000400000.00000040.00000400.00020000.00000000.sdmp, type: MEMORY
Source: Yara match File source: 00000000.00000002.2121163899.0000000004CD7000.00000004.00000800.00020000.00000000.sdmp, type: MEMORY
Source: Yara match File source: 00000000.00000002.2121163899.00000000041D9000.00000004.00000800.00020000.00000000.sdmp, type: MEMORY
Source: Yara match File source: Process Memory Space: 018292540-LetterReguranPPI-20230814215304.PDF.exe PID: 1224, type: MEMORYSTR
Source: Yara match File source: Process Memory Space: 018292540-LetterReguranPPI-20230814215304.PDF.exe PID: 6380, type: MEMORYSTR

Spam, unwanted Advertisements and Ransom Demands
barindex
Contains functionalty to change the wallpaper
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Code function: 3_2_0041A76C SystemParametersInfoW, 3_2_0041A76C

System Summary
barindex
Malicious sample detected (through community Yara rule)
Source: 0.2.018292540-LetterReguranPPI-20230814215304.PDF.exe.4cd7ae0.1.unpack, type: UNPACKEDPE Matched rule: Windows_Trojan_Remcos_b296e965 Author: unknown
Source: 0.2.018292540-LetterReguranPPI-20230814215304.PDF.exe.4cd7ae0.1.unpack, type: UNPACKEDPE Matched rule: REMCOS_RAT_variants Author: unknown
Source: 0.2.018292540-LetterReguranPPI-20230814215304.PDF.exe.4cd7ae0.1.unpack, type: UNPACKEDPE Matched rule: detects Windows exceutables potentially bypassing UAC using eventvwr.exe Author: ditekSHen
Source: 3.2.018292540-LetterReguranPPI-20230814215304.PDF.exe.400000.0.unpack, type: UNPACKEDPE Matched rule: Windows_Trojan_Remcos_b296e965 Author: unknown
Source: 3.2.018292540-LetterReguranPPI-20230814215304.PDF.exe.400000.0.unpack, type: UNPACKEDPE Matched rule: REMCOS_RAT_variants Author: unknown
Source: 3.2.018292540-LetterReguranPPI-20230814215304.PDF.exe.400000.0.unpack, type: UNPACKEDPE Matched rule: detects Windows exceutables potentially bypassing UAC using eventvwr.exe Author: ditekSHen
Source: 0.2.018292540-LetterReguranPPI-20230814215304.PDF.exe.429e908.2.unpack, type: UNPACKEDPE Matched rule: Windows_Trojan_Remcos_b296e965 Author: unknown
Source: 0.2.018292540-LetterReguranPPI-20230814215304.PDF.exe.429e908.2.unpack, type: UNPACKEDPE Matched rule: REMCOS_RAT_variants Author: unknown
Source: 0.2.018292540-LetterReguranPPI-20230814215304.PDF.exe.429e908.2.unpack, type: UNPACKEDPE Matched rule: detects Windows exceutables potentially bypassing UAC using eventvwr.exe Author: ditekSHen
Source: 3.2.018292540-LetterReguranPPI-20230814215304.PDF.exe.400000.0.raw.unpack, type: UNPACKEDPE Matched rule: Windows_Trojan_Remcos_b296e965 Author: unknown
Source: 3.2.018292540-LetterReguranPPI-20230814215304.PDF.exe.400000.0.raw.unpack, type: UNPACKEDPE Matched rule: REMCOS_RAT_variants Author: unknown
Source: 3.2.018292540-LetterReguranPPI-20230814215304.PDF.exe.400000.0.raw.unpack, type: UNPACKEDPE Matched rule: detects Windows exceutables potentially bypassing UAC using eventvwr.exe Author: ditekSHen
Source: 0.2.018292540-LetterReguranPPI-20230814215304.PDF.exe.4cd7ae0.1.raw.unpack, type: UNPACKEDPE Matched rule: Windows_Trojan_Remcos_b296e965 Author: unknown
Source: 0.2.018292540-LetterReguranPPI-20230814215304.PDF.exe.4cd7ae0.1.raw.unpack, type: UNPACKEDPE Matched rule: detects Windows exceutables potentially bypassing UAC using eventvwr.exe Author: ditekSHen
Source: 0.2.018292540-LetterReguranPPI-20230814215304.PDF.exe.429e908.2.raw.unpack, type: UNPACKEDPE Matched rule: Windows_Trojan_Remcos_b296e965 Author: unknown
Source: 0.2.018292540-LetterReguranPPI-20230814215304.PDF.exe.429e908.2.raw.unpack, type: UNPACKEDPE Matched rule: detects Windows exceutables potentially bypassing UAC using eventvwr.exe Author: ditekSHen
Source: 00000003.00000002.4563140092.0000000000400000.00000040.00000400.00020000.00000000.sdmp, type: MEMORY Matched rule: Windows_Trojan_Remcos_b296e965 Author: unknown
Source: 00000003.00000002.4563140092.0000000000400000.00000040.00000400.00020000.00000000.sdmp, type: MEMORY Matched rule: REMCOS_RAT_variants Author: unknown
Source: 00000003.00000002.4563140092.0000000000400000.00000040.00000400.00020000.00000000.sdmp, type: MEMORY Matched rule: detects Windows exceutables potentially bypassing UAC using eventvwr.exe Author: ditekSHen
Source: 00000000.00000002.2121163899.0000000004CD7000.00000004.00000800.00020000.00000000.sdmp, type: MEMORY Matched rule: Windows_Trojan_Remcos_b296e965 Author: unknown
Source: 00000000.00000002.2121163899.00000000041D9000.00000004.00000800.00020000.00000000.sdmp, type: MEMORY Matched rule: Windows_Trojan_Remcos_b296e965 Author: unknown
Source: Process Memory Space: 018292540-LetterReguranPPI-20230814215304.PDF.exe PID: 1224, type: MEMORYSTR Matched rule: Windows_Trojan_Remcos_b296e965 Author: unknown
Source: Process Memory Space: 018292540-LetterReguranPPI-20230814215304.PDF.exe PID: 6380, type: MEMORYSTR Matched rule: Windows_Trojan_Remcos_b296e965 Author: unknown
Initial sample is a PE file and has a suspicious name
Source: initial sample Static PE information: Filename: 018292540-LetterReguranPPI-20230814215304.PDF.exe
Abnormal high CPU Usage
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Process Stats: CPU usage > 49%
Contains functionality to shutdown / reboot the system
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Code function: 3_2_00414DB4 ExitWindowsEx,LoadLibraryA,GetProcAddress, 3_2_00414DB4
Detected potential crypto function
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Code function: 0_2_01604204 0_2_01604204
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Code function: 0_2_01606F90 0_2_01606F90
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Code function: 0_2_0160DED4 0_2_0160DED4
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Code function: 0_2_05CA83D0 0_2_05CA83D0
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Code function: 0_2_05CA97D8 0_2_05CA97D8
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Code function: 0_2_05CA7728 0_2_05CA7728
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Code function: 0_2_05CA7F88 0_2_05CA7F88
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Code function: 0_2_05CA7F98 0_2_05CA7F98
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Code function: 0_2_05CA7B60 0_2_05CA7B60
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Code function: 3_2_00425152 3_2_00425152
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Code function: 3_2_00435286 3_2_00435286
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Code function: 3_2_004513D4 3_2_004513D4
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Code function: 3_2_0045050B 3_2_0045050B
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Code function: 3_2_00436510 3_2_00436510
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Code function: 3_2_004316FB 3_2_004316FB
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Code function: 3_2_0043569E 3_2_0043569E
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Code function: 3_2_00443700 3_2_00443700
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Code function: 3_2_004257FB 3_2_004257FB
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Code function: 3_2_004128E3 3_2_004128E3
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Code function: 3_2_00425964 3_2_00425964
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Code function: 3_2_0041B917 3_2_0041B917
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Code function: 3_2_0043D9CC 3_2_0043D9CC
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Code function: 3_2_00435AD3 3_2_00435AD3
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Code function: 3_2_00424BC3 3_2_00424BC3
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Code function: 3_2_0043DBFB 3_2_0043DBFB
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Code function: 3_2_0044ABA9 3_2_0044ABA9
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Code function: 3_2_00433C0B 3_2_00433C0B
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Code function: 3_2_00434D8A 3_2_00434D8A
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Code function: 3_2_0043DE2A 3_2_0043DE2A
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Code function: 3_2_0041CEAF 3_2_0041CEAF
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Code function: 3_2_00435F08 3_2_00435F08
Found potential string decryption / allocating functions
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Code function: String function: 00402073 appears 51 times
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Code function: String function: 00432B90 appears 53 times
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Code function: String function: 00432525 appears 41 times
Sample file is different than original file name gathered from version info
Source: 018292540-LetterReguranPPI-20230814215304.PDF.exe, 00000000.00000002.2119999802.0000000003258000.00000004.00000800.00020000.00000000.sdmp Binary or memory string: OriginalFilenameArthur.dll" vs 018292540-LetterReguranPPI-20230814215304.PDF.exe
Source: 018292540-LetterReguranPPI-20230814215304.PDF.exe, 00000000.00000002.2121163899.00000000041D9000.00000004.00000800.00020000.00000000.sdmp Binary or memory string: OriginalFilenameMontero.dll8 vs 018292540-LetterReguranPPI-20230814215304.PDF.exe
Source: 018292540-LetterReguranPPI-20230814215304.PDF.exe, 00000000.00000002.2124309926.0000000007740000.00000004.08000000.00040000.00000000.sdmp Binary or memory string: OriginalFilenameMontero.dll8 vs 018292540-LetterReguranPPI-20230814215304.PDF.exe
Source: 018292540-LetterReguranPPI-20230814215304.PDF.exe, 00000000.00000002.2123778763.0000000005C80000.00000004.08000000.00040000.00000000.sdmp Binary or memory string: OriginalFilenameArthur.dll" vs 018292540-LetterReguranPPI-20230814215304.PDF.exe
Source: 018292540-LetterReguranPPI-20230814215304.PDF.exe, 00000000.00000002.2119999802.00000000032D0000.00000004.00000800.00020000.00000000.sdmp Binary or memory string: OriginalFilenameArthur.dll" vs 018292540-LetterReguranPPI-20230814215304.PDF.exe
Source: 018292540-LetterReguranPPI-20230814215304.PDF.exe Binary or memory string: OriginalFilenamezjeK.exeJ vs 018292540-LetterReguranPPI-20230814215304.PDF.exe
Uses 32bit PE files
Source: 018292540-LetterReguranPPI-20230814215304.PDF.exe Static PE information: EXECUTABLE_IMAGE, 32BIT_MACHINE
Yara signature match
Source: 0.2.018292540-LetterReguranPPI-20230814215304.PDF.exe.4cd7ae0.1.unpack, type: UNPACKEDPE Matched rule: Windows_Trojan_Remcos_b296e965 reference_sample = 0ebeffa44bd1c3603e30688ace84ea638fbcf485ca55ddcfd6fbe90609d4f3ed, os = windows, severity = x86, creation_date = 2021-06-10, scan_context = file, memory, license = Elastic License v2, threat_name = Windows.Trojan.Remcos, fingerprint = a5267bc2dee28a3ef58beeb7e4a151699e3e561c16ce0ab9eb27de33c122664d, id = b296e965-a99e-4446-b969-ba233a2a8af4, last_modified = 2021-08-23
Source: 0.2.018292540-LetterReguranPPI-20230814215304.PDF.exe.4cd7ae0.1.unpack, type: UNPACKEDPE Matched rule: REMCOS_RAT_variants Description = Detects multiple variants of REMCOS seen in the wild. Created by modifying and combining several of Florian\'s recent REMCOS ruleset. This rule aims for broader detection than the original ruleset, which used separate rules for each variant. If you do decide to break it into individual rules, the YARA strings variable names are grouped by the REMCOS variant type., Website = https://www.deadbits.org, Date = 2019-07-18, Repo = https://github.com/deadbits/yara-rules, Author = Adam M. Swanda
Source: 0.2.018292540-LetterReguranPPI-20230814215304.PDF.exe.4cd7ae0.1.unpack, type: UNPACKEDPE Matched rule: INDICATOR_SUSPICIOUS_EXE_UACBypass_EventViewer author = ditekSHen, description = detects Windows exceutables potentially bypassing UAC using eventvwr.exe
Source: 3.2.018292540-LetterReguranPPI-20230814215304.PDF.exe.400000.0.unpack, type: UNPACKEDPE Matched rule: Windows_Trojan_Remcos_b296e965 reference_sample = 0ebeffa44bd1c3603e30688ace84ea638fbcf485ca55ddcfd6fbe90609d4f3ed, os = windows, severity = x86, creation_date = 2021-06-10, scan_context = file, memory, license = Elastic License v2, threat_name = Windows.Trojan.Remcos, fingerprint = a5267bc2dee28a3ef58beeb7e4a151699e3e561c16ce0ab9eb27de33c122664d, id = b296e965-a99e-4446-b969-ba233a2a8af4, last_modified = 2021-08-23
Source: 3.2.018292540-LetterReguranPPI-20230814215304.PDF.exe.400000.0.unpack, type: UNPACKEDPE Matched rule: REMCOS_RAT_variants Description = Detects multiple variants of REMCOS seen in the wild. Created by modifying and combining several of Florian\'s recent REMCOS ruleset. This rule aims for broader detection than the original ruleset, which used separate rules for each variant. If you do decide to break it into individual rules, the YARA strings variable names are grouped by the REMCOS variant type., Website = https://www.deadbits.org, Date = 2019-07-18, Repo = https://github.com/deadbits/yara-rules, Author = Adam M. Swanda
Source: 3.2.018292540-LetterReguranPPI-20230814215304.PDF.exe.400000.0.unpack, type: UNPACKEDPE Matched rule: INDICATOR_SUSPICIOUS_EXE_UACBypass_EventViewer author = ditekSHen, description = detects Windows exceutables potentially bypassing UAC using eventvwr.exe
Source: 0.2.018292540-LetterReguranPPI-20230814215304.PDF.exe.429e908.2.unpack, type: UNPACKEDPE Matched rule: Windows_Trojan_Remcos_b296e965 reference_sample = 0ebeffa44bd1c3603e30688ace84ea638fbcf485ca55ddcfd6fbe90609d4f3ed, os = windows, severity = x86, creation_date = 2021-06-10, scan_context = file, memory, license = Elastic License v2, threat_name = Windows.Trojan.Remcos, fingerprint = a5267bc2dee28a3ef58beeb7e4a151699e3e561c16ce0ab9eb27de33c122664d, id = b296e965-a99e-4446-b969-ba233a2a8af4, last_modified = 2021-08-23
Source: 0.2.018292540-LetterReguranPPI-20230814215304.PDF.exe.429e908.2.unpack, type: UNPACKEDPE Matched rule: REMCOS_RAT_variants Description = Detects multiple variants of REMCOS seen in the wild. Created by modifying and combining several of Florian\'s recent REMCOS ruleset. This rule aims for broader detection than the original ruleset, which used separate rules for each variant. If you do decide to break it into individual rules, the YARA strings variable names are grouped by the REMCOS variant type., Website = https://www.deadbits.org, Date = 2019-07-18, Repo = https://github.com/deadbits/yara-rules, Author = Adam M. Swanda
Source: 0.2.018292540-LetterReguranPPI-20230814215304.PDF.exe.429e908.2.unpack, type: UNPACKEDPE Matched rule: INDICATOR_SUSPICIOUS_EXE_UACBypass_EventViewer author = ditekSHen, description = detects Windows exceutables potentially bypassing UAC using eventvwr.exe
Source: 3.2.018292540-LetterReguranPPI-20230814215304.PDF.exe.400000.0.raw.unpack, type: UNPACKEDPE Matched rule: Windows_Trojan_Remcos_b296e965 reference_sample = 0ebeffa44bd1c3603e30688ace84ea638fbcf485ca55ddcfd6fbe90609d4f3ed, os = windows, severity = x86, creation_date = 2021-06-10, scan_context = file, memory, license = Elastic License v2, threat_name = Windows.Trojan.Remcos, fingerprint = a5267bc2dee28a3ef58beeb7e4a151699e3e561c16ce0ab9eb27de33c122664d, id = b296e965-a99e-4446-b969-ba233a2a8af4, last_modified = 2021-08-23
Source: 3.2.018292540-LetterReguranPPI-20230814215304.PDF.exe.400000.0.raw.unpack, type: UNPACKEDPE Matched rule: REMCOS_RAT_variants Description = Detects multiple variants of REMCOS seen in the wild. Created by modifying and combining several of Florian\'s recent REMCOS ruleset. This rule aims for broader detection than the original ruleset, which used separate rules for each variant. If you do decide to break it into individual rules, the YARA strings variable names are grouped by the REMCOS variant type., Website = https://www.deadbits.org, Date = 2019-07-18, Repo = https://github.com/deadbits/yara-rules, Author = Adam M. Swanda
Source: 3.2.018292540-LetterReguranPPI-20230814215304.PDF.exe.400000.0.raw.unpack, type: UNPACKEDPE Matched rule: INDICATOR_SUSPICIOUS_EXE_UACBypass_EventViewer author = ditekSHen, description = detects Windows exceutables potentially bypassing UAC using eventvwr.exe
Source: 0.2.018292540-LetterReguranPPI-20230814215304.PDF.exe.4cd7ae0.1.raw.unpack, type: UNPACKEDPE Matched rule: Windows_Trojan_Remcos_b296e965 reference_sample = 0ebeffa44bd1c3603e30688ace84ea638fbcf485ca55ddcfd6fbe90609d4f3ed, os = windows, severity = x86, creation_date = 2021-06-10, scan_context = file, memory, license = Elastic License v2, threat_name = Windows.Trojan.Remcos, fingerprint = a5267bc2dee28a3ef58beeb7e4a151699e3e561c16ce0ab9eb27de33c122664d, id = b296e965-a99e-4446-b969-ba233a2a8af4, last_modified = 2021-08-23
Source: 0.2.018292540-LetterReguranPPI-20230814215304.PDF.exe.4cd7ae0.1.raw.unpack, type: UNPACKEDPE Matched rule: INDICATOR_SUSPICIOUS_EXE_UACBypass_EventViewer author = ditekSHen, description = detects Windows exceutables potentially bypassing UAC using eventvwr.exe
Source: 0.2.018292540-LetterReguranPPI-20230814215304.PDF.exe.429e908.2.raw.unpack, type: UNPACKEDPE Matched rule: Windows_Trojan_Remcos_b296e965 reference_sample = 0ebeffa44bd1c3603e30688ace84ea638fbcf485ca55ddcfd6fbe90609d4f3ed, os = windows, severity = x86, creation_date = 2021-06-10, scan_context = file, memory, license = Elastic License v2, threat_name = Windows.Trojan.Remcos, fingerprint = a5267bc2dee28a3ef58beeb7e4a151699e3e561c16ce0ab9eb27de33c122664d, id = b296e965-a99e-4446-b969-ba233a2a8af4, last_modified = 2021-08-23
Source: 0.2.018292540-LetterReguranPPI-20230814215304.PDF.exe.429e908.2.raw.unpack, type: UNPACKEDPE Matched rule: INDICATOR_SUSPICIOUS_EXE_UACBypass_EventViewer author = ditekSHen, description = detects Windows exceutables potentially bypassing UAC using eventvwr.exe
Source: 00000003.00000002.4563140092.0000000000400000.00000040.00000400.00020000.00000000.sdmp, type: MEMORY Matched rule: Windows_Trojan_Remcos_b296e965 reference_sample = 0ebeffa44bd1c3603e30688ace84ea638fbcf485ca55ddcfd6fbe90609d4f3ed, os = windows, severity = x86, creation_date = 2021-06-10, scan_context = file, memory, license = Elastic License v2, threat_name = Windows.Trojan.Remcos, fingerprint = a5267bc2dee28a3ef58beeb7e4a151699e3e561c16ce0ab9eb27de33c122664d, id = b296e965-a99e-4446-b969-ba233a2a8af4, last_modified = 2021-08-23
Source: 00000003.00000002.4563140092.0000000000400000.00000040.00000400.00020000.00000000.sdmp, type: MEMORY Matched rule: REMCOS_RAT_variants Description = Detects multiple variants of REMCOS seen in the wild. Created by modifying and combining several of Florian\'s recent REMCOS ruleset. This rule aims for broader detection than the original ruleset, which used separate rules for each variant. If you do decide to break it into individual rules, the YARA strings variable names are grouped by the REMCOS variant type., Website = https://www.deadbits.org, Date = 2019-07-18, Repo = https://github.com/deadbits/yara-rules, Author = Adam M. Swanda
Source: 00000003.00000002.4563140092.0000000000400000.00000040.00000400.00020000.00000000.sdmp, type: MEMORY Matched rule: INDICATOR_SUSPICIOUS_EXE_UACBypass_EventViewer author = ditekSHen, description = detects Windows exceutables potentially bypassing UAC using eventvwr.exe
Source: 00000000.00000002.2121163899.0000000004CD7000.00000004.00000800.00020000.00000000.sdmp, type: MEMORY Matched rule: Windows_Trojan_Remcos_b296e965 reference_sample = 0ebeffa44bd1c3603e30688ace84ea638fbcf485ca55ddcfd6fbe90609d4f3ed, os = windows, severity = x86, creation_date = 2021-06-10, scan_context = file, memory, license = Elastic License v2, threat_name = Windows.Trojan.Remcos, fingerprint = a5267bc2dee28a3ef58beeb7e4a151699e3e561c16ce0ab9eb27de33c122664d, id = b296e965-a99e-4446-b969-ba233a2a8af4, last_modified = 2021-08-23
Source: 00000000.00000002.2121163899.00000000041D9000.00000004.00000800.00020000.00000000.sdmp, type: MEMORY Matched rule: Windows_Trojan_Remcos_b296e965 reference_sample = 0ebeffa44bd1c3603e30688ace84ea638fbcf485ca55ddcfd6fbe90609d4f3ed, os = windows, severity = x86, creation_date = 2021-06-10, scan_context = file, memory, license = Elastic License v2, threat_name = Windows.Trojan.Remcos, fingerprint = a5267bc2dee28a3ef58beeb7e4a151699e3e561c16ce0ab9eb27de33c122664d, id = b296e965-a99e-4446-b969-ba233a2a8af4, last_modified = 2021-08-23
Source: Process Memory Space: 018292540-LetterReguranPPI-20230814215304.PDF.exe PID: 1224, type: MEMORYSTR Matched rule: Windows_Trojan_Remcos_b296e965 reference_sample = 0ebeffa44bd1c3603e30688ace84ea638fbcf485ca55ddcfd6fbe90609d4f3ed, os = windows, severity = x86, creation_date = 2021-06-10, scan_context = file, memory, license = Elastic License v2, threat_name = Windows.Trojan.Remcos, fingerprint = a5267bc2dee28a3ef58beeb7e4a151699e3e561c16ce0ab9eb27de33c122664d, id = b296e965-a99e-4446-b969-ba233a2a8af4, last_modified = 2021-08-23
Source: Process Memory Space: 018292540-LetterReguranPPI-20230814215304.PDF.exe PID: 6380, type: MEMORYSTR Matched rule: Windows_Trojan_Remcos_b296e965 reference_sample = 0ebeffa44bd1c3603e30688ace84ea638fbcf485ca55ddcfd6fbe90609d4f3ed, os = windows, severity = x86, creation_date = 2021-06-10, scan_context = file, memory, license = Elastic License v2, threat_name = Windows.Trojan.Remcos, fingerprint = a5267bc2dee28a3ef58beeb7e4a151699e3e561c16ce0ab9eb27de33c122664d, id = b296e965-a99e-4446-b969-ba233a2a8af4, last_modified = 2021-08-23
Source: 018292540-LetterReguranPPI-20230814215304.PDF.exe Static PE information: Section: .text IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ
Source: 0.2.018292540-LetterReguranPPI-20230814215304.PDF.exe.4358328.3.raw.unpack, woR9Eg0Q9801FPuSXk.cs Security API names: _0020.SetAccessControl
Source: 0.2.018292540-LetterReguranPPI-20230814215304.PDF.exe.4358328.3.raw.unpack, woR9Eg0Q9801FPuSXk.cs Security API names: System.Security.Principal.WindowsIdentity.GetCurrent()
Source: 0.2.018292540-LetterReguranPPI-20230814215304.PDF.exe.4358328.3.raw.unpack, woR9Eg0Q9801FPuSXk.cs Security API names: _0020.AddAccessRule
Source: 0.2.018292540-LetterReguranPPI-20230814215304.PDF.exe.7740000.5.raw.unpack, laiXiEOHsVj1lH9DPO.cs Security API names: System.Security.Principal.WindowsPrincipal.IsInRole(System.Security.Principal.WindowsBuiltInRole)
Source: 0.2.018292540-LetterReguranPPI-20230814215304.PDF.exe.7740000.5.raw.unpack, laiXiEOHsVj1lH9DPO.cs Security API names: System.Security.Principal.WindowsIdentity.GetCurrent()
Source: 0.2.018292540-LetterReguranPPI-20230814215304.PDF.exe.7740000.5.raw.unpack, woR9Eg0Q9801FPuSXk.cs Security API names: _0020.SetAccessControl
Source: 0.2.018292540-LetterReguranPPI-20230814215304.PDF.exe.7740000.5.raw.unpack, woR9Eg0Q9801FPuSXk.cs Security API names: System.Security.Principal.WindowsIdentity.GetCurrent()
Source: 0.2.018292540-LetterReguranPPI-20230814215304.PDF.exe.7740000.5.raw.unpack, woR9Eg0Q9801FPuSXk.cs Security API names: _0020.AddAccessRule
Source: 0.2.018292540-LetterReguranPPI-20230814215304.PDF.exe.4358328.3.raw.unpack, laiXiEOHsVj1lH9DPO.cs Security API names: System.Security.Principal.WindowsPrincipal.IsInRole(System.Security.Principal.WindowsBuiltInRole)
Source: 0.2.018292540-LetterReguranPPI-20230814215304.PDF.exe.4358328.3.raw.unpack, laiXiEOHsVj1lH9DPO.cs Security API names: System.Security.Principal.WindowsIdentity.GetCurrent()
Source: classification engine Classification label: mal100.rans.troj.spyw.evad.winEXE@3/3@4/2
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Code function: 3_2_00415C90 GetCurrentProcess,OpenProcessToken,LookupPrivilegeValueA,AdjustTokenPrivileges,GetLastError, 3_2_00415C90
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Code function: 3_2_0040E2E7 CreateToolhelp32Snapshot,Process32FirstW,Process32NextW,Process32NextW,CloseHandle, 3_2_0040E2E7
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Code function: 3_2_00419493 FindResourceA,LoadResource,LockResource,SizeofResource, 3_2_00419493
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Code function: 3_2_00418A00 OpenSCManagerW,OpenServiceW,CloseServiceHandle,StartServiceW,CloseServiceHandle,CloseServiceHandle,CloseServiceHandle, 3_2_00418A00
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe File created: C:\Users\user\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\018292540-LetterReguranPPI-20230814215304.PDF.exe.log Jump to behavior
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Mutant created: NULL
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Mutant created: \Sessions\1\BaseNamedObjects\jkm-I9KENP
Source: 018292540-LetterReguranPPI-20230814215304.PDF.exe Static PE information: Section: .text IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ
Source: 018292540-LetterReguranPPI-20230814215304.PDF.exe Static file information: TRID: Win32 Executable (generic) Net Framework (10011505/4) 49.83%
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Key opened: HKEY_CURRENT_USER\Software\Policies\Microsoft\Windows\Safer\CodeIdentifiers Jump to behavior
Source: 018292540-LetterReguranPPI-20230814215304.PDF.exe ReversingLabs: Detection: 60%
Source: unknown Process created: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe "C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe"
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Process created: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe "C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe"
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Process created: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe "C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe" Jump to behavior
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Section loaded: mscoree.dll Jump to behavior
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Section loaded: apphelp.dll Jump to behavior
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Section loaded: kernel.appcore.dll Jump to behavior
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Section loaded: version.dll Jump to behavior
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Section loaded: vcruntime140_clr0400.dll Jump to behavior
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Section loaded: ucrtbase_clr0400.dll Jump to behavior
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Section loaded: ucrtbase_clr0400.dll Jump to behavior
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Section loaded: uxtheme.dll Jump to behavior
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Section loaded: windows.storage.dll Jump to behavior
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Section loaded: wldp.dll Jump to behavior
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Section loaded: profapi.dll Jump to behavior
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Section loaded: cryptsp.dll Jump to behavior
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Section loaded: rsaenh.dll Jump to behavior
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Section loaded: cryptbase.dll Jump to behavior
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Section loaded: dwrite.dll Jump to behavior
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Section loaded: textshaping.dll Jump to behavior
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Section loaded: windowscodecs.dll Jump to behavior
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Section loaded: amsi.dll Jump to behavior
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Section loaded: userenv.dll Jump to behavior
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Section loaded: msasn1.dll Jump to behavior
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Section loaded: gpapi.dll Jump to behavior
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Section loaded: winmm.dll Jump to behavior
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Section loaded: urlmon.dll Jump to behavior
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Section loaded: wininet.dll Jump to behavior
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Section loaded: iertutil.dll Jump to behavior
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Section loaded: srvcli.dll Jump to behavior
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Section loaded: netutils.dll Jump to behavior
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Section loaded: sspicli.dll Jump to behavior
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Section loaded: mswsock.dll Jump to behavior
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Section loaded: dnsapi.dll Jump to behavior
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Section loaded: iphlpapi.dll Jump to behavior
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Section loaded: rasadhlp.dll Jump to behavior
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Section loaded: fwpuclnt.dll Jump to behavior
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Section loaded: cryptsp.dll Jump to behavior
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Section loaded: rsaenh.dll Jump to behavior
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Section loaded: cryptbase.dll Jump to behavior
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Section loaded: windows.storage.dll Jump to behavior
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Section loaded: wldp.dll Jump to behavior
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Section loaded: profapi.dll Jump to behavior
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Section loaded: kernel.appcore.dll Jump to behavior
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Section loaded: ondemandconnroutehelper.dll Jump to behavior
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Section loaded: winhttp.dll Jump to behavior
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Section loaded: winnsi.dll Jump to behavior
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Key value queried: HKEY_LOCAL_MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{0EE7644B-1BAD-48B1-9889-0281C206EB85}\InprocServer32 Jump to behavior
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe File opened: C:\Windows\Microsoft.NET\Framework\v4.0.30319\mscorrc.dll Jump to behavior
Source: 018292540-LetterReguranPPI-20230814215304.PDF.exe Static PE information: data directory type: IMAGE_DIRECTORY_ENTRY_COM_DESCRIPTOR
Source: 018292540-LetterReguranPPI-20230814215304.PDF.exe Static PE information: DYNAMIC_BASE, NX_COMPAT, NO_SEH, TERMINAL_SERVER_AWARE
Source: 018292540-LetterReguranPPI-20230814215304.PDF.exe Static PE information: data directory type: IMAGE_DIRECTORY_ENTRY_DEBUG
Source: Binary string: zjeK.pdb source: 018292540-LetterReguranPPI-20230814215304.PDF.exe
Source: Binary string: zjeK.pdbSHA256y source: 018292540-LetterReguranPPI-20230814215304.PDF.exe

Data Obfuscation
barindex
.NET source code contains potential unpacker
Source: 0.2.018292540-LetterReguranPPI-20230814215304.PDF.exe.4358328.3.raw.unpack, woR9Eg0Q9801FPuSXk.cs .Net Code: mmHDAsF1FN System.Reflection.Assembly.Load(byte[])
Source: 0.2.018292540-LetterReguranPPI-20230814215304.PDF.exe.7740000.5.raw.unpack, woR9Eg0Q9801FPuSXk.cs .Net Code: mmHDAsF1FN System.Reflection.Assembly.Load(byte[])
Binary contains a suspicious time stamp
Source: 018292540-LetterReguranPPI-20230814215304.PDF.exe Static PE information: 0xE0A2DAA6 [Sun Jun 5 00:19:50 2089 UTC]
Contains functionality to dynamically determine API calls
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Code function: 3_2_0041A8DA LoadLibraryA,LoadLibraryA,GetProcAddress,GetProcAddress,GetModuleHandleA,GetModuleHandleA,GetProcAddress,LoadLibraryA,GetProcAddress,GetModuleHandleA,GetProcAddress,GetModuleHandleA,GetProcAddress,GetModuleHandleA,GetProcAddress,LoadLibraryA,GetProcAddress,LoadLibraryA,GetProcAddress,GetModuleHandleA,GetProcAddress,GetModuleHandleA,GetProcAddress,LoadLibraryA,GetProcAddress,GetModuleHandleA,GetProcAddress,GetModuleHandleA,GetProcAddress,GetModuleHandleA,GetProcAddress,GetModuleHandleA,GetProcAddress,GetModuleHandleA,GetProcAddress,LoadLibraryA,GetProcAddress,LoadLibraryA,GetProcAddress, 3_2_0041A8DA
Uses code obfuscation techniques (call, push, ret)
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Code function: 0_2_0160B670 push 14418B05h; ret 0_2_0160B683
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Code function: 0_2_05CA4D46 push eax; iretd 0_2_05CA4D47
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Code function: 3_2_004000D8 push es; iretd 3_2_004000D9
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Code function: 3_2_0040008C push es; iretd 3_2_0040008D
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Code function: 3_2_004542E6 push ecx; ret 3_2_004542F9
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Code function: 3_2_0045B4FD push esi; ret 3_2_0045B506
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Code function: 3_2_00432BD6 push ecx; ret 3_2_00432BE9
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Code function: 3_2_00454C08 push eax; ret 3_2_00454C26
Source: 018292540-LetterReguranPPI-20230814215304.PDF.exe Static PE information: section name: .text entropy: 7.897730360364982
Source: 0.2.018292540-LetterReguranPPI-20230814215304.PDF.exe.4358328.3.raw.unpack, J6XhibJTUUhBPsL2Qk.cs High entropy of concatenated method names: 'Dispose', 'y6mMmxrfE9', 'mfOYacr8GX', 'PHTl0wW2wP', 'tVmMxPlaRp', 'GjkMzYTmcK', 'ProcessDialogKey', 'NnLYKvlswZ', 'R25YMfO6kO', 'nsTYYClOVR'
Source: 0.2.018292540-LetterReguranPPI-20230814215304.PDF.exe.4358328.3.raw.unpack, u9rupWGRkTwk6Pg0Cm.cs High entropy of concatenated method names: 'ToString', 'CuQqianULD', 'mj7qanqal7', 'KxRqUoQ0UT', 'DHgqh7kydG', 'lTWqs0vNjI', 'hW4qQ7wStv', 'd9CqTcGlBh', 'eW4q3GEdQk', 'GSHq1285Yu'
Source: 0.2.018292540-LetterReguranPPI-20230814215304.PDF.exe.4358328.3.raw.unpack, ovwI08MMpqAVIskWkqn.cs High entropy of concatenated method names: 'k9llx9ZXto', 'OTElzyD2LL', 'Yrh9KdmY2W', 'UA29M2icys', 'hG99Yjxhk2', 'snu9tjguHf', 'pjv9DHrhJI', 'nBt98EvlBu', 'wxV95HCkop', 'vC69J1M8WH'
Source: 0.2.018292540-LetterReguranPPI-20230814215304.PDF.exe.4358328.3.raw.unpack, tn4jqgnV06rsQAC7Qh.cs High entropy of concatenated method names: 'EditValue', 'GetEditStyle', 'cK2YmuYMFS', 'zuFYx4SCmy', 'HshYz4qh9u', 'yG7tKdypsB', 'fXKtMPbqWr', 'OcTtYHa8jO', 'kyJtttgtAG', 'ouhdlecvv07mxas6nDb'
Source: 0.2.018292540-LetterReguranPPI-20230814215304.PDF.exe.4358328.3.raw.unpack, zsiM0BzqSEy1HHtnfT.cs High entropy of concatenated method names: 'aDZljBMw2a', 'K05lO28Ogc', 'Aesld5LY3P', 'zTGlewRqoD', 'UQolaH3InX', 'Y3Dlhx7R7k', 'nn4lsyS2Xk', 'fuYlZxD6tj', 'pLNlH1tUTn', 'pY7lX0gS6V'
Source: 0.2.018292540-LetterReguranPPI-20230814215304.PDF.exe.4358328.3.raw.unpack, iYDUj7MKnWs6Y7tEtwC.cs High entropy of concatenated method names: 'CanConvertFrom', 'ConvertFrom', 'ConvertTo', 'MjAliOmcCd', 'FkIlv5nEZT', 'ITplSLvrlg', 'Y5Sl2nD75O', 'WbclVQrOki', 'aV4lGedfc3', 'CFGlo5hJdw'
Source: 0.2.018292540-LetterReguranPPI-20230814215304.PDF.exe.4358328.3.raw.unpack, AlOVR5x1Joa7HNnZFg.cs High entropy of concatenated method names: 'MtblnZSU2k', 'LOMlPBgEa3', 'UFqlbPkglk', 't3olptLhhZ', 'Qh9l4TyQoY', 'kNXl0Xxyxm', 'Next', 'Next', 'Next', 'NextBytes'
Source: 0.2.018292540-LetterReguranPPI-20230814215304.PDF.exe.4358328.3.raw.unpack, uEiW19THKfn7dlQKbp.cs High entropy of concatenated method names: 'X51p5p82Rx', 'dGlpnnoS2c', 'tZ9pbBBNN7', 'JGfbx6COsC', 'Hydbz5Q1F8', 'QXMpKrX2Fd', 'CZEpMwWo7e', 'z6TpY5oPGv', 'FsXpt0OpdO', 'nxypDnj8q6'
Source: 0.2.018292540-LetterReguranPPI-20230814215304.PDF.exe.4358328.3.raw.unpack, YEe08woVQ9CvmecFhO.cs High entropy of concatenated method names: 'zaIcrWPwsc', 'VIhcgOMnYL', 'ToString', 'qOZc5iLlYG', 'p5xcJkUGwU', 'fascnrTepw', 'wi5cPr8BSF', 'hficbC5F0e', 'hE3cpT36cZ', 'jVOc02E8Jf'
Source: 0.2.018292540-LetterReguranPPI-20230814215304.PDF.exe.4358328.3.raw.unpack, VvlswZm225fO6kO7sT.cs High entropy of concatenated method names: 'zJN4efQ5a3', 'PrZ4aFbsnE', 'OCA4UpED4d', 'vaQ4hCvAq6', 'AoX4sJyrIu', 'oLQ4QS5n8J', 'DSH4Tnws8J', 'ncX43Uv391', 'nx341U0JjF', 'r5m46yYkDo'
Source: 0.2.018292540-LetterReguranPPI-20230814215304.PDF.exe.4358328.3.raw.unpack, kEVatxDyaDBqZgvDgI.cs High entropy of concatenated method names: 'bsyMpaiXiE', 'xsVM0j1lH9', 'U39MrHFuxa', 'gMOMgs4e8b', 'JsgMu4HZfk', 'QbHMqBbdMx', 'op9UCEUu3J7XxhRsJO', 'hGfQASsf0FUEspHjcR', 'sj4MMw68BH', 'HKOMt7FYP5'
Source: 0.2.018292540-LetterReguranPPI-20230814215304.PDF.exe.4358328.3.raw.unpack, JqLG3SLr0SPaLZfBMX.cs High entropy of concatenated method names: 'ORvcNb9b4y', 'kmhcxq4A0k', 'MPQIKyAmpW', 'Jy5IMQhREm', 'OrkciEr9Sw', 'ncJcvgeUc2', 'XbZcSi513T', 'SN1c2Hc2K6', 'nI8cVP11Fl', 'fG8cG5UfR6'
Source: 0.2.018292540-LetterReguranPPI-20230814215304.PDF.exe.4358328.3.raw.unpack, ns1R1sMt6JslygQTXsm.cs High entropy of concatenated method names: 'eGm9x4PJRV', 'M1d9zDmoVN', 'TmgEKdrkV3', 'S0ZHF3I6PIXOcOWFBje', 'FX5mJ4IIoS3pSf2DBve', 'VLmTaNIvEkrsClirj1b', 'MuYJLII2FkmgrU5XQM7'
Source: 0.2.018292540-LetterReguranPPI-20230814215304.PDF.exe.4358328.3.raw.unpack, re8bDwwvVbj40ssg4H.cs High entropy of concatenated method names: 'gWkPBL6NDe', 'ThOPkVmWO5', 'wtZnU0KUFq', 'F92nhIqGKe', 'zoknsy01HZ', 'PdVnQPkPJe', 'oa9nT2fZUe', 'CDYn3wH6lS', 'Ypmn1eXWKw', 'dF0n6S6BMd'
Source: 0.2.018292540-LetterReguranPPI-20230814215304.PDF.exe.4358328.3.raw.unpack, laiXiEOHsVj1lH9DPO.cs High entropy of concatenated method names: 'zcBJ2mKEhB', 'U49JVpHsde', 'mYwJG0fdZN', 'NKtJoajKO8', 'o07JWRtgK1', 'bUBJL8x4bR', 'bwVJfGAl01', 'xxWJNR4G2R', 'XWOJm3e7Yx', 'MJvJxKajxK'
Source: 0.2.018292540-LetterReguranPPI-20230814215304.PDF.exe.4358328.3.raw.unpack, GafaLWd39HFuxaJMOs.cs High entropy of concatenated method names: 'srqnCX5iM9', 'FQxnj3x1lZ', 'swYnOt6lvx', 'MVfndhnMlG', 'IdqnujW3Jb', 'th3nq83BTD', 'kV7ncp31Q5', 'FGSnInPdBX', 'G1Tn4CYkIc', 'mCDnlsRxjg'
Source: 0.2.018292540-LetterReguranPPI-20230814215304.PDF.exe.4358328.3.raw.unpack, woR9Eg0Q9801FPuSXk.cs High entropy of concatenated method names: 'Vlxt8kRllL', 'AQHt5LSqNL', 'dEgtJXrc5a', 'nBItn5vMIo', 'UgOtP67fbp', 'Bn8tbWNZr3', 'kbGtpB0r5c', 'p9Vt0Gtu72', 'A2VtyuK58Z', 'fBTtrBEwRP'
Source: 0.2.018292540-LetterReguranPPI-20230814215304.PDF.exe.4358328.3.raw.unpack, Y4N0Ma1gJ7wjXTYPAR.cs High entropy of concatenated method names: 'WDupH2LCdH', 'aOfpXQaiGQ', 'yJwpAYQ2Ob', 'ludpC61KMn', 'AIFpBqkIRf', 'B4DpjWNHkE', 'p6IpkCpJre', 'PH6pOrGrbJ', 'sebpdtnCxF', 'V3GpwIjbsf'
Source: 0.2.018292540-LetterReguranPPI-20230814215304.PDF.exe.4358328.3.raw.unpack, SW0wbLfU8X6mxrfE99.cs High entropy of concatenated method names: 'mBK4ubqe0X', 'yb64cCctlV', 'Dnb44nA6a4', 'Car494O4Ri', 't7Y4FXQ3rf', 'feB4ZFmgAF', 'Dispose', 'ogGI5Q5Gom', 'rFtIJIqwWO', 'yl8InwYD23'
Source: 0.2.018292540-LetterReguranPPI-20230814215304.PDF.exe.4358328.3.raw.unpack, deVP7oSkkpR8HfRC18.cs High entropy of concatenated method names: 'Efu7OLp4RI', 'bEU7dLqtaG', 'gir7ep8kFL', 'GMh7aBRi3J', 'fgq7hxqNdN', 'eUV7s8Dw0l', 'jbi7TUISRj', 'H3I7312XcU', 'fiP76VXlsw', 'Ap67ifH3X1'
Source: 0.2.018292540-LetterReguranPPI-20230814215304.PDF.exe.4358328.3.raw.unpack, YLeJppMDbdQhk4vdwTI.cs High entropy of concatenated method names: 'CanConvertFrom', 'ConvertFrom', 'ConvertTo', 'PyhE4NarCT', 'lqoElGhlfI', 'TyVE95BHSD', 'R45EEVdRNI', 'Ly9EFKaABK', 'ujVERHYohV', 'mTfEZk8GSE'
Source: 0.2.018292540-LetterReguranPPI-20230814215304.PDF.exe.4358328.3.raw.unpack, oYNaNTY63no1HPtwbj.cs High entropy of concatenated method names: 'oYFAPtC2p', 'flcCtr3WC', 'E8pjX5oAV', 'WPEkHOrNf', 'SZFdQOOLE', 'TpNwmwfaW', 'S7MwpEjirjTpU6YBYe', 't1YLomMDwO9hWuwq1A', 'FMwIOdn4P', 'xtTlC55Hi'
Source: 0.2.018292540-LetterReguranPPI-20230814215304.PDF.exe.4358328.3.raw.unpack, wfk2bHeBbdMx8MW0IW.cs High entropy of concatenated method names: 'PLfb8o8jmS', 'h3ZbJpihG6', 'yVDbPyQLyQ', 'fPwbpUu9ik', 'bvsb0ohbDx', 'V96PWknOde', 'jAlPLldD2o', 'bt5Pf7cDX7', 'KrTPNxLrXi', 'GvZPm0rejA'
Source: 0.2.018292540-LetterReguranPPI-20230814215304.PDF.exe.7740000.5.raw.unpack, J6XhibJTUUhBPsL2Qk.cs High entropy of concatenated method names: 'Dispose', 'y6mMmxrfE9', 'mfOYacr8GX', 'PHTl0wW2wP', 'tVmMxPlaRp', 'GjkMzYTmcK', 'ProcessDialogKey', 'NnLYKvlswZ', 'R25YMfO6kO', 'nsTYYClOVR'
Source: 0.2.018292540-LetterReguranPPI-20230814215304.PDF.exe.7740000.5.raw.unpack, u9rupWGRkTwk6Pg0Cm.cs High entropy of concatenated method names: 'ToString', 'CuQqianULD', 'mj7qanqal7', 'KxRqUoQ0UT', 'DHgqh7kydG', 'lTWqs0vNjI', 'hW4qQ7wStv', 'd9CqTcGlBh', 'eW4q3GEdQk', 'GSHq1285Yu'
Source: 0.2.018292540-LetterReguranPPI-20230814215304.PDF.exe.7740000.5.raw.unpack, ovwI08MMpqAVIskWkqn.cs High entropy of concatenated method names: 'k9llx9ZXto', 'OTElzyD2LL', 'Yrh9KdmY2W', 'UA29M2icys', 'hG99Yjxhk2', 'snu9tjguHf', 'pjv9DHrhJI', 'nBt98EvlBu', 'wxV95HCkop', 'vC69J1M8WH'
Source: 0.2.018292540-LetterReguranPPI-20230814215304.PDF.exe.7740000.5.raw.unpack, tn4jqgnV06rsQAC7Qh.cs High entropy of concatenated method names: 'EditValue', 'GetEditStyle', 'cK2YmuYMFS', 'zuFYx4SCmy', 'HshYz4qh9u', 'yG7tKdypsB', 'fXKtMPbqWr', 'OcTtYHa8jO', 'kyJtttgtAG', 'ouhdlecvv07mxas6nDb'
Source: 0.2.018292540-LetterReguranPPI-20230814215304.PDF.exe.7740000.5.raw.unpack, zsiM0BzqSEy1HHtnfT.cs High entropy of concatenated method names: 'aDZljBMw2a', 'K05lO28Ogc', 'Aesld5LY3P', 'zTGlewRqoD', 'UQolaH3InX', 'Y3Dlhx7R7k', 'nn4lsyS2Xk', 'fuYlZxD6tj', 'pLNlH1tUTn', 'pY7lX0gS6V'
Source: 0.2.018292540-LetterReguranPPI-20230814215304.PDF.exe.7740000.5.raw.unpack, iYDUj7MKnWs6Y7tEtwC.cs High entropy of concatenated method names: 'CanConvertFrom', 'ConvertFrom', 'ConvertTo', 'MjAliOmcCd', 'FkIlv5nEZT', 'ITplSLvrlg', 'Y5Sl2nD75O', 'WbclVQrOki', 'aV4lGedfc3', 'CFGlo5hJdw'
Source: 0.2.018292540-LetterReguranPPI-20230814215304.PDF.exe.7740000.5.raw.unpack, AlOVR5x1Joa7HNnZFg.cs High entropy of concatenated method names: 'MtblnZSU2k', 'LOMlPBgEa3', 'UFqlbPkglk', 't3olptLhhZ', 'Qh9l4TyQoY', 'kNXl0Xxyxm', 'Next', 'Next', 'Next', 'NextBytes'
Source: 0.2.018292540-LetterReguranPPI-20230814215304.PDF.exe.7740000.5.raw.unpack, uEiW19THKfn7dlQKbp.cs High entropy of concatenated method names: 'X51p5p82Rx', 'dGlpnnoS2c', 'tZ9pbBBNN7', 'JGfbx6COsC', 'Hydbz5Q1F8', 'QXMpKrX2Fd', 'CZEpMwWo7e', 'z6TpY5oPGv', 'FsXpt0OpdO', 'nxypDnj8q6'
Source: 0.2.018292540-LetterReguranPPI-20230814215304.PDF.exe.7740000.5.raw.unpack, YEe08woVQ9CvmecFhO.cs High entropy of concatenated method names: 'zaIcrWPwsc', 'VIhcgOMnYL', 'ToString', 'qOZc5iLlYG', 'p5xcJkUGwU', 'fascnrTepw', 'wi5cPr8BSF', 'hficbC5F0e', 'hE3cpT36cZ', 'jVOc02E8Jf'
Source: 0.2.018292540-LetterReguranPPI-20230814215304.PDF.exe.7740000.5.raw.unpack, VvlswZm225fO6kO7sT.cs High entropy of concatenated method names: 'zJN4efQ5a3', 'PrZ4aFbsnE', 'OCA4UpED4d', 'vaQ4hCvAq6', 'AoX4sJyrIu', 'oLQ4QS5n8J', 'DSH4Tnws8J', 'ncX43Uv391', 'nx341U0JjF', 'r5m46yYkDo'
Source: 0.2.018292540-LetterReguranPPI-20230814215304.PDF.exe.7740000.5.raw.unpack, kEVatxDyaDBqZgvDgI.cs High entropy of concatenated method names: 'bsyMpaiXiE', 'xsVM0j1lH9', 'U39MrHFuxa', 'gMOMgs4e8b', 'JsgMu4HZfk', 'QbHMqBbdMx', 'op9UCEUu3J7XxhRsJO', 'hGfQASsf0FUEspHjcR', 'sj4MMw68BH', 'HKOMt7FYP5'
Source: 0.2.018292540-LetterReguranPPI-20230814215304.PDF.exe.7740000.5.raw.unpack, JqLG3SLr0SPaLZfBMX.cs High entropy of concatenated method names: 'ORvcNb9b4y', 'kmhcxq4A0k', 'MPQIKyAmpW', 'Jy5IMQhREm', 'OrkciEr9Sw', 'ncJcvgeUc2', 'XbZcSi513T', 'SN1c2Hc2K6', 'nI8cVP11Fl', 'fG8cG5UfR6'
Source: 0.2.018292540-LetterReguranPPI-20230814215304.PDF.exe.7740000.5.raw.unpack, ns1R1sMt6JslygQTXsm.cs High entropy of concatenated method names: 'eGm9x4PJRV', 'M1d9zDmoVN', 'TmgEKdrkV3', 'S0ZHF3I6PIXOcOWFBje', 'FX5mJ4IIoS3pSf2DBve', 'VLmTaNIvEkrsClirj1b', 'MuYJLII2FkmgrU5XQM7'
Source: 0.2.018292540-LetterReguranPPI-20230814215304.PDF.exe.7740000.5.raw.unpack, re8bDwwvVbj40ssg4H.cs High entropy of concatenated method names: 'gWkPBL6NDe', 'ThOPkVmWO5', 'wtZnU0KUFq', 'F92nhIqGKe', 'zoknsy01HZ', 'PdVnQPkPJe', 'oa9nT2fZUe', 'CDYn3wH6lS', 'Ypmn1eXWKw', 'dF0n6S6BMd'
Source: 0.2.018292540-LetterReguranPPI-20230814215304.PDF.exe.7740000.5.raw.unpack, laiXiEOHsVj1lH9DPO.cs High entropy of concatenated method names: 'zcBJ2mKEhB', 'U49JVpHsde', 'mYwJG0fdZN', 'NKtJoajKO8', 'o07JWRtgK1', 'bUBJL8x4bR', 'bwVJfGAl01', 'xxWJNR4G2R', 'XWOJm3e7Yx', 'MJvJxKajxK'
Source: 0.2.018292540-LetterReguranPPI-20230814215304.PDF.exe.7740000.5.raw.unpack, GafaLWd39HFuxaJMOs.cs High entropy of concatenated method names: 'srqnCX5iM9', 'FQxnj3x1lZ', 'swYnOt6lvx', 'MVfndhnMlG', 'IdqnujW3Jb', 'th3nq83BTD', 'kV7ncp31Q5', 'FGSnInPdBX', 'G1Tn4CYkIc', 'mCDnlsRxjg'
Source: 0.2.018292540-LetterReguranPPI-20230814215304.PDF.exe.7740000.5.raw.unpack, woR9Eg0Q9801FPuSXk.cs High entropy of concatenated method names: 'Vlxt8kRllL', 'AQHt5LSqNL', 'dEgtJXrc5a', 'nBItn5vMIo', 'UgOtP67fbp', 'Bn8tbWNZr3', 'kbGtpB0r5c', 'p9Vt0Gtu72', 'A2VtyuK58Z', 'fBTtrBEwRP'
Source: 0.2.018292540-LetterReguranPPI-20230814215304.PDF.exe.7740000.5.raw.unpack, Y4N0Ma1gJ7wjXTYPAR.cs High entropy of concatenated method names: 'WDupH2LCdH', 'aOfpXQaiGQ', 'yJwpAYQ2Ob', 'ludpC61KMn', 'AIFpBqkIRf', 'B4DpjWNHkE', 'p6IpkCpJre', 'PH6pOrGrbJ', 'sebpdtnCxF', 'V3GpwIjbsf'
Source: 0.2.018292540-LetterReguranPPI-20230814215304.PDF.exe.7740000.5.raw.unpack, SW0wbLfU8X6mxrfE99.cs High entropy of concatenated method names: 'mBK4ubqe0X', 'yb64cCctlV', 'Dnb44nA6a4', 'Car494O4Ri', 't7Y4FXQ3rf', 'feB4ZFmgAF', 'Dispose', 'ogGI5Q5Gom', 'rFtIJIqwWO', 'yl8InwYD23'
Source: 0.2.018292540-LetterReguranPPI-20230814215304.PDF.exe.7740000.5.raw.unpack, deVP7oSkkpR8HfRC18.cs High entropy of concatenated method names: 'Efu7OLp4RI', 'bEU7dLqtaG', 'gir7ep8kFL', 'GMh7aBRi3J', 'fgq7hxqNdN', 'eUV7s8Dw0l', 'jbi7TUISRj', 'H3I7312XcU', 'fiP76VXlsw', 'Ap67ifH3X1'
Source: 0.2.018292540-LetterReguranPPI-20230814215304.PDF.exe.7740000.5.raw.unpack, YLeJppMDbdQhk4vdwTI.cs High entropy of concatenated method names: 'CanConvertFrom', 'ConvertFrom', 'ConvertTo', 'PyhE4NarCT', 'lqoElGhlfI', 'TyVE95BHSD', 'R45EEVdRNI', 'Ly9EFKaABK', 'ujVERHYohV', 'mTfEZk8GSE'
Source: 0.2.018292540-LetterReguranPPI-20230814215304.PDF.exe.7740000.5.raw.unpack, oYNaNTY63no1HPtwbj.cs High entropy of concatenated method names: 'oYFAPtC2p', 'flcCtr3WC', 'E8pjX5oAV', 'WPEkHOrNf', 'SZFdQOOLE', 'TpNwmwfaW', 'S7MwpEjirjTpU6YBYe', 't1YLomMDwO9hWuwq1A', 'FMwIOdn4P', 'xtTlC55Hi'
Source: 0.2.018292540-LetterReguranPPI-20230814215304.PDF.exe.7740000.5.raw.unpack, wfk2bHeBbdMx8MW0IW.cs High entropy of concatenated method names: 'PLfb8o8jmS', 'h3ZbJpihG6', 'yVDbPyQLyQ', 'fPwbpUu9ik', 'bvsb0ohbDx', 'V96PWknOde', 'jAlPLldD2o', 'bt5Pf7cDX7', 'KrTPNxLrXi', 'GvZPm0rejA'
Contains functionality to download and launch executables
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Code function: 3_2_004063C6 ShellExecuteW,URLDownloadToFileW, 3_2_004063C6
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Code function: 3_2_00418A00 OpenSCManagerW,OpenServiceW,CloseServiceHandle,StartServiceW,CloseServiceHandle,CloseServiceHandle,CloseServiceHandle, 3_2_00418A00

Hooking and other Techniques for Hiding and Protection
barindex
Uses an obfuscated file name to hide its real file extension (double extension)
Source: Possible double extension: pdf.exe Static PE information: 018292540-LetterReguranPPI-20230814215304.PDF.exe
Extensive use of GetProcAddress (often used to hide API calls)
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Code function: 3_2_0041A8DA LoadLibraryA,LoadLibraryA,GetProcAddress,GetProcAddress,GetModuleHandleA,GetModuleHandleA,GetProcAddress,LoadLibraryA,GetProcAddress,GetModuleHandleA,GetProcAddress,GetModuleHandleA,GetProcAddress,GetModuleHandleA,GetProcAddress,LoadLibraryA,GetProcAddress,LoadLibraryA,GetProcAddress,GetModuleHandleA,GetProcAddress,GetModuleHandleA,GetProcAddress,LoadLibraryA,GetProcAddress,GetModuleHandleA,GetProcAddress,GetModuleHandleA,GetProcAddress,GetModuleHandleA,GetProcAddress,GetModuleHandleA,GetProcAddress,GetModuleHandleA,GetProcAddress,LoadLibraryA,GetProcAddress,LoadLibraryA,GetProcAddress, 3_2_0041A8DA
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Process information set: NOOPENFILEERRORBOX Jump to behavior

Malware Analysis System Evasion
barindex
Yara detected AntiVM3
Source: Yara match File source: Process Memory Space: 018292540-LetterReguranPPI-20230814215304.PDF.exe PID: 1224, type: MEMORYSTR
Delayed program exit found
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Code function: 3_2_0040E18D Sleep,ExitProcess, 3_2_0040E18D
Allocates memory with a write watch (potentially for evading sandboxes)
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Memory allocated: 1600000 memory reserve | memory write watch Jump to behavior
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Memory allocated: 31D0000 memory reserve | memory write watch Jump to behavior
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Memory allocated: 3020000 memory reserve | memory write watch Jump to behavior
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Memory allocated: 9350000 memory reserve | memory write watch Jump to behavior
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Memory allocated: A350000 memory reserve | memory write watch Jump to behavior
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Memory allocated: A550000 memory reserve | memory write watch Jump to behavior
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Memory allocated: B550000 memory reserve | memory write watch Jump to behavior
Contains functionality to enumerate running services
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Code function: OpenSCManagerA,EnumServicesStatusW,GetLastError,EnumServicesStatusW,OpenServiceW,QueryServiceConfigW,GetLastError,QueryServiceConfigW,CloseServiceHandle,CloseServiceHandle, 3_2_004186FE
Contains long sleeps (>= 3 min)
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Thread delayed: delay time: 922337203685477 Jump to behavior
Found a high number of Window / User specific system calls (may be a loop to detect user behavior)
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Window / User API: threadDelayed 9337 Jump to behavior
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Window / User API: foregroundWindowGot 1768 Jump to behavior
May sleep (evasive loops) to hinder dynamic analysis
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe TID: 7056 Thread sleep time: -922337203685477s >= -30000s Jump to behavior
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe TID: 3840 Thread sleep count: 232 > 30 Jump to behavior
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe TID: 3840 Thread sleep time: -116000s >= -30000s Jump to behavior
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe TID: 348 Thread sleep count: 187 > 30 Jump to behavior
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe TID: 348 Thread sleep time: -561000s >= -30000s Jump to behavior
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe TID: 348 Thread sleep count: 9337 > 30 Jump to behavior
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe TID: 348 Thread sleep time: -28011000s >= -30000s Jump to behavior
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Code function: 3_2_0041A01B FindFirstFileW,FindNextFileW,RemoveDirectoryW,SetFileAttributesW,DeleteFileW,GetLastError,FindClose,RemoveDirectoryW,FindClose, 3_2_0041A01B
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Code function: 3_2_0040B28E FindFirstFileW,PathFileExistsW,FindNextFileW,FindClose,FindClose, 3_2_0040B28E
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Code function: 3_2_0040838E __EH_prolog,__CxxThrowException@8,FindFirstFileW,FindNextFileW,FindClose,FindClose, 3_2_0040838E
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Code function: 3_2_004087A0 __EH_prolog,FindFirstFileW,FindNextFileW,FindClose,FindClose, 3_2_004087A0
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Code function: 3_2_00407848 __EH_prolog,FindFirstFileW,__CxxThrowException@8,FindNextFileW,FindClose, 3_2_00407848
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Code function: 3_2_004068CD FindFirstFileW,FindNextFileW, 3_2_004068CD
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Code function: 3_2_0044BA59 FindFirstFileExA, 3_2_0044BA59
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Code function: 3_2_0040AA71 FindFirstFileA,FindClose,DeleteFileA,GetLastError,DeleteFileA,GetLastError,FindNextFileA,FindClose, 3_2_0040AA71
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Code function: 3_2_00417AAB FindFirstFileW,FindNextFileW,FindNextFileW, 3_2_00417AAB
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Code function: 3_2_0040AC78 FindFirstFileA,FindClose,DeleteFileA,GetLastError,FindNextFileA,FindClose,FindClose, 3_2_0040AC78
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Code function: 3_2_00406D28 SetEvent,GetFileAttributesW,DeleteFileW,ShellExecuteW,GetLogicalDriveStringsA,DeleteFileA,Sleep,StrToIntA,CreateDirectoryW, 3_2_00406D28
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Thread delayed: delay time: 922337203685477 Jump to behavior
Source: 018292540-LetterReguranPPI-20230814215304.PDF.exe, 00000003.00000002.4563518017.000000000117A000.00000004.00000020.00020000.00000000.sdmp, 018292540-LetterReguranPPI-20230814215304.PDF.exe, 00000003.00000002.4563803924.00000000011DC000.00000004.00000020.00020000.00000000.sdmp Binary or memory string: Hyper-V RAW
Source: 018292540-LetterReguranPPI-20230814215304.PDF.exe, 00000003.00000002.4563803924.00000000011DC000.00000004.00000020.00020000.00000000.sdmp Binary or memory string: Hyper-V RAWd
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe API call chain: ExitProcess graph end node
Contains functionality to check if a debugger is running (IsDebuggerPresent)
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Code function: 3_2_004327AE IsProcessorFeaturePresent,IsDebuggerPresent,SetUnhandledExceptionFilter,UnhandledExceptionFilter, 3_2_004327AE
Contains functionality to dynamically determine API calls
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Code function: 3_2_0041A8DA LoadLibraryA,LoadLibraryA,GetProcAddress,GetProcAddress,GetModuleHandleA,GetModuleHandleA,GetProcAddress,LoadLibraryA,GetProcAddress,GetModuleHandleA,GetProcAddress,GetModuleHandleA,GetProcAddress,GetModuleHandleA,GetProcAddress,LoadLibraryA,GetProcAddress,LoadLibraryA,GetProcAddress,GetModuleHandleA,GetProcAddress,GetModuleHandleA,GetProcAddress,LoadLibraryA,GetProcAddress,GetModuleHandleA,GetProcAddress,GetModuleHandleA,GetProcAddress,GetModuleHandleA,GetProcAddress,GetModuleHandleA,GetProcAddress,GetModuleHandleA,GetProcAddress,LoadLibraryA,GetProcAddress,LoadLibraryA,GetProcAddress, 3_2_0041A8DA
Contains functionality to read the PEB
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Code function: 3_2_004407B5 mov eax, dword ptr fs:[00000030h] 3_2_004407B5
Contains functionality which may be used to detect a debugger (GetProcessHeap)
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Code function: 3_2_00410763 SetLastError,GetNativeSystemInfo,SetLastError,GetProcessHeap,HeapAlloc,SetLastError, 3_2_00410763
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Code function: 3_2_004327AE IsProcessorFeaturePresent,IsDebuggerPresent,SetUnhandledExceptionFilter,UnhandledExceptionFilter, 3_2_004327AE
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Code function: 3_2_004328FC SetUnhandledExceptionFilter, 3_2_004328FC
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Code function: 3_2_004398AC IsDebuggerPresent,SetUnhandledExceptionFilter,UnhandledExceptionFilter, 3_2_004398AC
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Code function: 3_2_00432D5C SetUnhandledExceptionFilter,UnhandledExceptionFilter,GetCurrentProcess,TerminateProcess, 3_2_00432D5C
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Memory allocated: page read and write | page guard Jump to behavior

HIPS / PFW / Operating System Protection Evasion
barindex
Injects a PE file into a foreign processes
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Memory written: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe base: 400000 value starts with: 4D5A Jump to behavior
Contains functionality to enumerate process and check for explorer.exe or svchost.exe (often used for thread injection)
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Code function: GetCurrentProcessId,OpenMutexA,CloseHandle,CreateThread,CloseHandle,Sleep,OpenProcess, svchost.exe 3_2_00410B5C
Contains functionality to simulate mouse events
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Code function: 3_2_004175E1 mouse_event, 3_2_004175E1
Creates a process in suspended mode (likely to inject code)
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Process created: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe "C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe" Jump to behavior
Source: 018292540-LetterReguranPPI-20230814215304.PDF.exe, 00000003.00000002.4563667041.00000000011C3000.00000004.00000020.00020000.00000000.sdmp Binary or memory string: Program ManagerNP\37
Source: 018292540-LetterReguranPPI-20230814215304.PDF.exe, 00000003.00000002.4563667041.00000000011C3000.00000004.00000020.00020000.00000000.sdmp Binary or memory string: Program Manager
Source: 018292540-LetterReguranPPI-20230814215304.PDF.exe, 00000003.00000002.4563667041.00000000011C3000.00000004.00000020.00020000.00000000.sdmp Binary or memory string: Program ManagerNP\
Source: 018292540-LetterReguranPPI-20230814215304.PDF.exe, 00000003.00000002.4563667041.00000000011C3000.00000004.00000020.00020000.00000000.sdmp Binary or memory string: Program ManagerNP\71
Source: 018292540-LetterReguranPPI-20230814215304.PDF.exe, 00000003.00000002.4563667041.00000000011C3000.00000004.00000020.00020000.00000000.sdmp Binary or memory string: Program Managerr|
Source: 018292540-LetterReguranPPI-20230814215304.PDF.exe, 00000003.00000002.4563667041.00000000011C3000.00000004.00000020.00020000.00000000.sdmp Binary or memory string: Program ManagerL
Source: 018292540-LetterReguranPPI-20230814215304.PDF.exe, 00000003.00000002.4563667041.00000000011C3000.00000004.00000020.00020000.00000000.sdmp Binary or memory string: Program ManagerNP\
Source: 018292540-LetterReguranPPI-20230814215304.PDF.exe, 00000003.00000002.4563667041.00000000011C3000.00000004.00000020.00020000.00000000.sdmp Binary or memory string: Program ManagerNP\^
Source: 018292540-LetterReguranPPI-20230814215304.PDF.exe, 00000003.00000002.4563518017.000000000117A000.00000004.00000020.00020000.00000000.sdmp Binary or memory string: Program ManagerC:\Prog
Source: 018292540-LetterReguranPPI-20230814215304.PDF.exe, 00000003.00000002.4563667041.00000000011C3000.00000004.00000020.00020000.00000000.sdmp Binary or memory string: Program ManagerNP\9
Source: 018292540-LetterReguranPPI-20230814215304.PDF.exe, 00000003.00000002.4563667041.00000000011C3000.00000004.00000020.00020000.00000000.sdmp Binary or memory string: Program ManagerNP\Y
Source: 018292540-LetterReguranPPI-20230814215304.PDF.exe, 00000003.00000002.4563518017.000000000117A000.00000004.00000020.00020000.00000000.sdmp, 018292540-LetterReguranPPI-20230814215304.PDF.exe, 00000003.00000002.4563667041.00000000011C3000.00000004.00000020.00020000.00000000.sdmp Binary or memory string: |Program Manager|
Source: 018292540-LetterReguranPPI-20230814215304.PDF.exe, 00000003.00000002.4563518017.000000000117A000.00000004.00000020.00020000.00000000.sdmp Binary or memory string: [Program Manager]
Contains functionality to query CPU information (cpuid)
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Code function: 3_2_004329DA cpuid 3_2_004329DA
Contains functionality to query locales information (e.g. system language)
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Code function: GetLocaleInfoA, 3_2_0040E2BB
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Code function: EnumSystemLocalesW, 3_2_0044F17B
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Code function: EnumSystemLocalesW, 3_2_0044F130
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Code function: EnumSystemLocalesW, 3_2_0044F216
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Code function: GetLocaleInfoW,GetLocaleInfoW,GetLocaleInfoW, 3_2_0044F2A3
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Code function: GetLocaleInfoW, 3_2_0044F4F3
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Code function: GetLocaleInfoW,GetLocaleInfoW,GetACP, 3_2_0044F61C
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Code function: GetLocaleInfoW, 3_2_0044F723
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Code function: GetUserDefaultLCID,IsValidCodePage,IsValidLocale,GetLocaleInfoW,GetLocaleInfoW, 3_2_0044F7F0
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Code function: EnumSystemLocalesW, 3_2_00445914
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Code function: GetLocaleInfoW, 3_2_00445E1C
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Code function: IsValidCodePage,_wcschr,_wcschr,GetLocaleInfoW, 3_2_0044EEB8
Queries the volume information (name, serial number etc) of a device
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Queries volume information: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe VolumeInformation Jump to behavior
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Queries volume information: C:\Windows\Microsoft.NET\assembly\GAC_MSIL\System.Windows.Forms\v4.0_4.0.0.0__b77a5c561934e089\System.Windows.Forms.dll VolumeInformation Jump to behavior
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Queries volume information: C:\Windows\Microsoft.NET\assembly\GAC_MSIL\System.Drawing\v4.0_4.0.0.0__b03f5f7f11d50a3a\System.Drawing.dll VolumeInformation Jump to behavior
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Queries volume information: C:\Windows\Microsoft.NET\assembly\GAC_MSIL\Accessibility\v4.0_4.0.0.0__b03f5f7f11d50a3a\Accessibility.dll VolumeInformation Jump to behavior
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Queries volume information: C:\Windows\Fonts\micross.ttf VolumeInformation Jump to behavior
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Queries volume information: C:\Windows\Microsoft.NET\assembly\GAC_MSIL\Microsoft.VisualBasic\v4.0_10.0.0.0__b03f5f7f11d50a3a\Microsoft.VisualBasic.dll VolumeInformation Jump to behavior
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Code function: 3_2_00404F31 GetLocalTime,CreateEventA,CreateThread, 3_2_00404F31
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Code function: 3_2_004195F8 GetComputerNameExW,GetUserNameW, 3_2_004195F8
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Code function: 3_2_004466BF _free,_free,_free,GetTimeZoneInformation,WideCharToMultiByte,WideCharToMultiByte,_free, 3_2_004466BF
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Key value queried: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Cryptography MachineGuid Jump to behavior

Stealing of Sensitive Information
barindex
Yara detected Remcos RAT
Source: Yara match File source: 0.2.018292540-LetterReguranPPI-20230814215304.PDF.exe.4cd7ae0.1.unpack, type: UNPACKEDPE
Source: Yara match File source: 3.2.018292540-LetterReguranPPI-20230814215304.PDF.exe.400000.0.unpack, type: UNPACKEDPE
Source: Yara match File source: 0.2.018292540-LetterReguranPPI-20230814215304.PDF.exe.429e908.2.unpack, type: UNPACKEDPE
Source: Yara match File source: 3.2.018292540-LetterReguranPPI-20230814215304.PDF.exe.400000.0.raw.unpack, type: UNPACKEDPE
Source: Yara match File source: 0.2.018292540-LetterReguranPPI-20230814215304.PDF.exe.4cd7ae0.1.raw.unpack, type: UNPACKEDPE
Source: Yara match File source: 0.2.018292540-LetterReguranPPI-20230814215304.PDF.exe.429e908.2.raw.unpack, type: UNPACKEDPE
Source: Yara match File source: 00000003.00000002.4563518017.000000000117A000.00000004.00000020.00020000.00000000.sdmp, type: MEMORY
Source: Yara match File source: 00000003.00000002.4563140092.0000000000400000.00000040.00000400.00020000.00000000.sdmp, type: MEMORY
Source: Yara match File source: 00000000.00000002.2121163899.0000000004CD7000.00000004.00000800.00020000.00000000.sdmp, type: MEMORY
Source: Yara match File source: 00000000.00000002.2121163899.00000000041D9000.00000004.00000800.00020000.00000000.sdmp, type: MEMORY
Source: Yara match File source: Process Memory Space: 018292540-LetterReguranPPI-20230814215304.PDF.exe PID: 1224, type: MEMORYSTR
Source: Yara match File source: Process Memory Space: 018292540-LetterReguranPPI-20230814215304.PDF.exe PID: 6380, type: MEMORYSTR
Contains functionality to steal Chrome passwords or cookies
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Code function: \AppData\Local\Google\Chrome\User Data\Default\Login Data 3_2_0040A953
Contains functionality to steal Firefox passwords or cookies
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Code function: \AppData\Roaming\Mozilla\Firefox\Profiles\ 3_2_0040AA71
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Code function: \key3.db 3_2_0040AA71

Remote Access Functionality
barindex
Yara detected Remcos RAT
Source: Yara match File source: 0.2.018292540-LetterReguranPPI-20230814215304.PDF.exe.4cd7ae0.1.unpack, type: UNPACKEDPE
Source: Yara match File source: 3.2.018292540-LetterReguranPPI-20230814215304.PDF.exe.400000.0.unpack, type: UNPACKEDPE
Source: Yara match File source: 0.2.018292540-LetterReguranPPI-20230814215304.PDF.exe.429e908.2.unpack, type: UNPACKEDPE
Source: Yara match File source: 3.2.018292540-LetterReguranPPI-20230814215304.PDF.exe.400000.0.raw.unpack, type: UNPACKEDPE
Source: Yara match File source: 0.2.018292540-LetterReguranPPI-20230814215304.PDF.exe.4cd7ae0.1.raw.unpack, type: UNPACKEDPE
Source: Yara match File source: 0.2.018292540-LetterReguranPPI-20230814215304.PDF.exe.429e908.2.raw.unpack, type: UNPACKEDPE
Source: Yara match File source: 00000003.00000002.4563518017.000000000117A000.00000004.00000020.00020000.00000000.sdmp, type: MEMORY
Source: Yara match File source: 00000003.00000002.4563140092.0000000000400000.00000040.00000400.00020000.00000000.sdmp, type: MEMORY
Source: Yara match File source: 00000000.00000002.2121163899.0000000004CD7000.00000004.00000800.00020000.00000000.sdmp, type: MEMORY
Source: Yara match File source: 00000000.00000002.2121163899.00000000041D9000.00000004.00000800.00020000.00000000.sdmp, type: MEMORY
Source: Yara match File source: Process Memory Space: 018292540-LetterReguranPPI-20230814215304.PDF.exe PID: 1224, type: MEMORYSTR
Source: Yara match File source: Process Memory Space: 018292540-LetterReguranPPI-20230814215304.PDF.exe PID: 6380, type: MEMORYSTR
Contains functionality to launch a control a shell (cmd.exe)
Source: C:\Users\user\Desktop\018292540-LetterReguranPPI-20230814215304.PDF.exe Code function: cmd.exe 3_2_0040567A
windows-stand
  • No. of IPs < 25%
  • 25% < No. of IPs < 50%
  • 50% < No. of IPs < 75%
  • 75% < No. of IPs

Contacted Public IPs

IP Domain Country Flag ASN ASN Name Malicious
178.237.33.50
 geoplugin.net Netherlands
8455 ATOM86-ASATOM86NL false
154.216.20.185
 oyo.work.gd Seychelles
135357 SKHT-ASShenzhenKatherineHengTechnologyInformationCo false

Contacted Domains

Name IP Active
geoplugin.net 178.237.33.50 true
oyo.work.gd 154.216.20.185 true

Contacted URLs

Name Malicious Antivirus Detection Reputation
http://geoplugin.net/json.gp false
    		high
    oyo.work.gd true
    • Avira URL Cloud: malware
    		 unknown