Windows Analysis Report
jcXViWLNuc.exe

Overview

General Information

Sample name: jcXViWLNuc.exe
renamed because original name is a hash value
Original sample name: a8ca71060dae68d7ae75ea3156301407.exe
Analysis ID: 1465914
MD5: a8ca71060dae68d7ae75ea3156301407
SHA1: 9e116e2ce2a01fdbc2587725fa5261b26758fc77
SHA256: 9701b7e2c0cd3f562f2b817e94993309429963d2cec3424e7f77345f31ded0ae
Tags: 32exetrojan
Infos:

Detection

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

Signatures

Antivirus / Scanner detection for submitted sample
Detected Remcos RAT
Found malware configuration
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Yara detected Remcos RAT
C2 URLs / IPs found in malware configuration
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
Machine Learning detection for sample
Contains functionality for read data from the clipboard
Contains functionality to call native functions
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 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 shutdown / reboot the system
Contains functionality to simulate mouse events
Contains functionality which may be used to detect a debugger (GetProcessHeap)
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 evasive API chain (may stop execution after accessing registry keys)
Found potential string decryption / allocating functions
May sleep (evasive loops) to hinder dynamic analysis
Sample execution stops while process was sleeping (likely an evasion)
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
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Antivirus / Scanner detection for submitted sample
Source: jcXViWLNuc.exe Avira: detected
Found malware configuration
Source: 1.2.jcXViWLNuc.exe.400000.0.unpack Malware Configuration Extractor: Remcos {"Host:Port:Password": "127.0.0.1:2404", "Assigned name": "RemoteHost", "Connect interval": "1", "Install flag": "Disable", "Setup HKCU\\Run": "Enable", "Setup HKLM\\Run": "Enable", "Install path": "Application path", "Copy file": "remcos.exe", "Startup value": "Disable", "Hide file": "Disable", "Mutex": "Rmc-MG8NXC", "Keylog flag": "0", "Keylog path": "Application path", "Keylog file": "logs.dat", "Keylog crypt": "Disable", "Hide keylog file": "Disable", "Screenshot flag": "Disable", "Screenshot time": "10", "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"}
Multi AV Scanner detection for submitted file
Source: jcXViWLNuc.exe Virustotal: Detection: 79% Perma Link
Source: jcXViWLNuc.exe ReversingLabs: Detection: 84%
Yara detected Remcos RAT
Source: Yara match File source: jcXViWLNuc.exe, type: SAMPLE
Source: Yara match File source: 1.0.jcXViWLNuc.exe.400000.0.unpack, type: UNPACKEDPE
Source: Yara match File source: 1.2.jcXViWLNuc.exe.400000.0.unpack, type: UNPACKEDPE
Source: Yara match File source: 00000001.00000002.3817487536.000000000081E000.00000004.00000020.00020000.00000000.sdmp, type: MEMORY
Source: Yara match File source: 00000001.00000002.3817171743.000000000044D000.00000002.00000001.01000000.00000003.sdmp, type: MEMORY
Source: Yara match File source: 00000001.00000000.1374177573.000000000044D000.00000002.00000001.01000000.00000003.sdmp, type: MEMORY
Source: Yara match File source: Process Memory Space: jcXViWLNuc.exe PID: 7836, type: MEMORYSTR
Machine Learning detection for sample
Source: jcXViWLNuc.exe Joe Sandbox ML: detected
Uses Microsoft's Enhanced Cryptographic Provider
Source: C:\Users\user\Desktop\jcXViWLNuc.exe Code function: 1_2_0042B19B CryptAcquireContextA,CryptGenRandom,CryptReleaseContext, 1_2_0042B19B
Source: jcXViWLNuc.exe, 00000001.00000002.3817171743.000000000044D000.00000002.00000001.01000000.00000003.sdmp Binary or memory string: -----BEGIN PUBLIC KEY----- memstr_fb53869e-d
Uses 32bit PE files
Source: jcXViWLNuc.exe Static PE information: EXECUTABLE_IMAGE, 32BIT_MACHINE
Source: C:\Users\user\Desktop\jcXViWLNuc.exe Code function: 1_2_004081F9 FindFirstFileA,FindClose,FindNextFileA,DeleteFileA,GetLastError,FindNextFileA,FindClose,FindClose, 1_2_004081F9
Source: C:\Users\user\Desktop\jcXViWLNuc.exe Code function: 1_2_004072E5 __EH_prolog,__CxxThrowException@8,FindFirstFileW,FindNextFileW,FindClose,FindClose, 1_2_004072E5
Source: C:\Users\user\Desktop\jcXViWLNuc.exe Code function: 1_2_0041474A FindFirstFileW,FindNextFileW,RemoveDirectoryW,FindClose,RemoveDirectoryW,SetFileAttributesW,DeleteFileW,GetLastError,FindClose, 1_2_0041474A
Source: C:\Users\user\Desktop\jcXViWLNuc.exe Code function: 1_2_00407733 __EH_prolog,FindFirstFileW,FindNextFileW,FindClose,FindClose, 1_2_00407733
Source: C:\Users\user\Desktop\jcXViWLNuc.exe Code function: 1_2_00440A49 FindFirstFileExA, 1_2_00440A49
Source: C:\Users\user\Desktop\jcXViWLNuc.exe Code function: 1_2_00404CF3 FindFirstFileW,FindNextFileW, 1_2_00404CF3
Source: C:\Users\user\Desktop\jcXViWLNuc.exe Code function: 1_2_00405C8E __EH_prolog,FindFirstFileW,__CxxThrowException@8,FindNextFileW,FindClose, 1_2_00405C8E
Source: C:\Users\user\Desktop\jcXViWLNuc.exe Code function: 1_2_00407FDE FindFirstFileA,FindClose,DeleteFileA,GetLastError,DeleteFileA,GetLastError,FindNextFileA,FindClose, 1_2_00407FDE
Source: C:\Users\user\Desktop\jcXViWLNuc.exe Code function: 1_2_0040511A SetEvent,GetFileAttributesW,DeleteFileW,ShellExecuteW,GetLogicalDriveStringsA,SetFileAttributesW,DeleteFileA,Sleep,StrToIntA,CreateDirectoryW, 1_2_0040511A

Networking
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C2 URLs / IPs found in malware configuration
Source: Malware configuration extractor URLs: 127.0.0.1
Source: C:\Users\user\Desktop\jcXViWLNuc.exe Code function: 1_2_0040F4A7 SetEvent,GetTickCount,DeleteFileW,ExitProcess,Sleep,Sleep,URLDownloadToFileW,MessageBoxW,ExitWindowsEx,LoadLibraryA,GetProcAddress,OpenClipboard,EmptyClipboard,GlobalAlloc,GlobalLock,GlobalUnlock,SetClipboardData,OpenClipboard,EmptyClipboard,CloseClipboard,OpenClipboard,GetClipboardData,GlobalLock,GlobalUnlock,CloseClipboard,SetWindowTextW,StrToIntA,CreateThread,ShowWindow,SetForegroundWindow,ShowWindow, 1_2_0040F4A7
Source: jcXViWLNuc.exe String found in binary or memory: http://geoplugin.net/json.gp
Source: jcXViWLNuc.exe String found in binary or memory: http://geoplugin.net/json.gp/C
Contains functionality for read data from the clipboard
Source: C:\Users\user\Desktop\jcXViWLNuc.exe Code function: 1_2_0040F4A7 SetEvent,GetTickCount,DeleteFileW,ExitProcess,Sleep,Sleep,URLDownloadToFileW,MessageBoxW,ExitWindowsEx,LoadLibraryA,GetProcAddress,OpenClipboard,EmptyClipboard,GlobalAlloc,GlobalLock,GlobalUnlock,SetClipboardData,OpenClipboard,EmptyClipboard,CloseClipboard,OpenClipboard,GetClipboardData,GlobalLock,GlobalUnlock,CloseClipboard,SetWindowTextW,StrToIntA,CreateThread,ShowWindow,SetForegroundWindow,ShowWindow, 1_2_0040F4A7
Contains functionality to modify clipboard data
Source: C:\Users\user\Desktop\jcXViWLNuc.exe Code function: 1_2_0040F4A7 SetEvent,GetTickCount,DeleteFileW,ExitProcess,Sleep,Sleep,URLDownloadToFileW,MessageBoxW,ExitWindowsEx,LoadLibraryA,GetProcAddress,OpenClipboard,EmptyClipboard,GlobalAlloc,GlobalLock,GlobalUnlock,SetClipboardData,OpenClipboard,EmptyClipboard,CloseClipboard,OpenClipboard,GetClipboardData,GlobalLock,GlobalUnlock,CloseClipboard,SetWindowTextW,StrToIntA,CreateThread,ShowWindow,SetForegroundWindow,ShowWindow, 1_2_0040F4A7
Contains functionality to read the clipboard data
Source: C:\Users\user\Desktop\jcXViWLNuc.exe Code function: 1_2_0040F4A7 SetEvent,GetTickCount,DeleteFileW,ExitProcess,Sleep,Sleep,URLDownloadToFileW,MessageBoxW,ExitWindowsEx,LoadLibraryA,GetProcAddress,OpenClipboard,EmptyClipboard,GlobalAlloc,GlobalLock,GlobalUnlock,SetClipboardData,OpenClipboard,EmptyClipboard,CloseClipboard,OpenClipboard,GetClipboardData,GlobalLock,GlobalUnlock,CloseClipboard,SetWindowTextW,StrToIntA,CreateThread,ShowWindow,SetForegroundWindow,ShowWindow, 1_2_0040F4A7

E-Banking Fraud
barindex
Yara detected Remcos RAT
Source: Yara match File source: jcXViWLNuc.exe, type: SAMPLE
Source: Yara match File source: 1.0.jcXViWLNuc.exe.400000.0.unpack, type: UNPACKEDPE
Source: Yara match File source: 1.2.jcXViWLNuc.exe.400000.0.unpack, type: UNPACKEDPE
Source: Yara match File source: 00000001.00000002.3817487536.000000000081E000.00000004.00000020.00020000.00000000.sdmp, type: MEMORY
Source: Yara match File source: 00000001.00000002.3817171743.000000000044D000.00000002.00000001.01000000.00000003.sdmp, type: MEMORY
Source: Yara match File source: 00000001.00000000.1374177573.000000000044D000.00000002.00000001.01000000.00000003.sdmp, type: MEMORY
Source: Yara match File source: Process Memory Space: jcXViWLNuc.exe PID: 7836, type: MEMORYSTR

Spam, unwanted Advertisements and Ransom Demands
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Contains functionalty to change the wallpaper
Source: C:\Users\user\Desktop\jcXViWLNuc.exe Code function: 1_2_00414D34 SystemParametersInfoW, 1_2_00414D34

System Summary
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Malicious sample detected (through community Yara rule)
Source: jcXViWLNuc.exe, type: SAMPLE Matched rule: REMCOS_RAT_variants Author: unknown
Source: 1.0.jcXViWLNuc.exe.400000.0.unpack, type: UNPACKEDPE Matched rule: REMCOS_RAT_variants Author: unknown
Source: 1.2.jcXViWLNuc.exe.400000.0.unpack, type: UNPACKEDPE Matched rule: REMCOS_RAT_variants Author: unknown
Contains functionality to call native functions
Source: C:\Users\user\Desktop\jcXViWLNuc.exe Code function: 1_2_00414085 OpenProcess,NtSuspendProcess,CloseHandle, 1_2_00414085
Source: C:\Users\user\Desktop\jcXViWLNuc.exe Code function: 1_2_004140B1 OpenProcess,NtResumeProcess,CloseHandle, 1_2_004140B1
Contains functionality to shutdown / reboot the system
Source: C:\Users\user\Desktop\jcXViWLNuc.exe Code function: 1_2_0040F4A7 SetEvent,GetTickCount,DeleteFileW,ExitProcess,Sleep,Sleep,URLDownloadToFileW,MessageBoxW,ExitWindowsEx,LoadLibraryA,GetProcAddress,OpenClipboard,EmptyClipboard,GlobalAlloc,GlobalLock,GlobalUnlock,SetClipboardData,OpenClipboard,EmptyClipboard,CloseClipboard,OpenClipboard,GetClipboardData,GlobalLock,GlobalUnlock,CloseClipboard,SetWindowTextW,StrToIntA,CreateThread,ShowWindow,SetForegroundWindow,ShowWindow, 1_2_0040F4A7
Detected potential crypto function
Source: C:\Users\user\Desktop\jcXViWLNuc.exe Code function: 1_2_0041601F 1_2_0041601F
Source: C:\Users\user\Desktop\jcXViWLNuc.exe Code function: 1_2_00431217 1_2_00431217
Source: C:\Users\user\Desktop\jcXViWLNuc.exe Code function: 1_2_0042E220 1_2_0042E220
Source: C:\Users\user\Desktop\jcXViWLNuc.exe Code function: 1_2_0042B2A6 1_2_0042B2A6
Source: C:\Users\user\Desktop\jcXViWLNuc.exe Code function: 1_2_0044B470 1_2_0044B470
Source: C:\Users\user\Desktop\jcXViWLNuc.exe Code function: 1_2_004304CE 1_2_004304CE
Source: C:\Users\user\Desktop\jcXViWLNuc.exe Code function: 1_2_004454FB 1_2_004454FB
Source: C:\Users\user\Desktop\jcXViWLNuc.exe Code function: 1_2_0041F488 1_2_0041F488
Source: C:\Users\user\Desktop\jcXViWLNuc.exe Code function: 1_2_0040F4A7 1_2_0040F4A7
Source: C:\Users\user\Desktop\jcXViWLNuc.exe Code function: 1_2_004175D6 1_2_004175D6
Source: C:\Users\user\Desktop\jcXViWLNuc.exe Code function: 1_2_0043164C 1_2_0043164C
Source: C:\Users\user\Desktop\jcXViWLNuc.exe Code function: 1_2_0043B680 1_2_0043B680
Source: C:\Users\user\Desktop\jcXViWLNuc.exe Code function: 1_2_004476B8 1_2_004476B8
Source: C:\Users\user\Desktop\jcXViWLNuc.exe Code function: 1_2_0042D76E 1_2_0042D76E
Source: C:\Users\user\Desktop\jcXViWLNuc.exe Code function: 1_2_0043680C 1_2_0043680C
Source: C:\Users\user\Desktop\jcXViWLNuc.exe Code function: 1_2_004309CA 1_2_004309CA
Source: C:\Users\user\Desktop\jcXViWLNuc.exe Code function: 1_2_0040D9A0 1_2_0040D9A0
Source: C:\Users\user\Desktop\jcXViWLNuc.exe Code function: 1_2_00436A3B 1_2_00436A3B
Source: C:\Users\user\Desktop\jcXViWLNuc.exe Code function: 1_2_0041FB26 1_2_0041FB26
Source: C:\Users\user\Desktop\jcXViWLNuc.exe Code function: 1_2_0041FC69 1_2_0041FC69
Source: C:\Users\user\Desktop\jcXViWLNuc.exe Code function: 1_2_00445C19 1_2_00445C19
Source: C:\Users\user\Desktop\jcXViWLNuc.exe Code function: 1_2_00430DE2 1_2_00430DE2
Source: C:\Users\user\Desktop\jcXViWLNuc.exe Code function: 1_2_0041EF91 1_2_0041EF91
Found potential string decryption / allocating functions
Source: C:\Users\user\Desktop\jcXViWLNuc.exe Code function: String function: 0042BE33 appears 34 times
Source: C:\Users\user\Desktop\jcXViWLNuc.exe Code function: String function: 0042C720 appears 50 times
Uses 32bit PE files
Source: jcXViWLNuc.exe Static PE information: EXECUTABLE_IMAGE, 32BIT_MACHINE
Yara signature match
Source: jcXViWLNuc.exe, type: SAMPLE 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: 1.0.jcXViWLNuc.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: 1.2.jcXViWLNuc.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: classification engine Classification label: mal100.rans.troj.spyw.evad.winEXE@2/1@0/1
Source: C:\Users\user\Desktop\jcXViWLNuc.exe Code function: 1_2_00410D25 GetCurrentProcess,OpenProcessToken,LookupPrivilegeValueA,AdjustTokenPrivileges,GetLastError, 1_2_00410D25
Source: C:\Users\user\Desktop\jcXViWLNuc.exe Code function: 1_2_0040A7FF CreateToolhelp32Snapshot,Process32FirstW,Process32NextW,CloseHandle, 1_2_0040A7FF
Source: C:\Users\user\Desktop\jcXViWLNuc.exe Code function: 1_2_00413B3A FindResourceA,LoadResource,LockResource,SizeofResource, 1_2_00413B3A
Source: C:\Users\user\Desktop\jcXViWLNuc.exe Code function: 1_2_0041311D OpenSCManagerW,OpenServiceW,CloseServiceHandle,StartServiceW,CloseServiceHandle,CloseServiceHandle,CloseServiceHandle, 1_2_0041311D
Source: C:\Users\user\Desktop\jcXViWLNuc.exe Mutant created: \Sessions\1\BaseNamedObjects\Rmc-MG8NXC
Source: C:\Windows\System32\conhost.exe Mutant created: \Sessions\1\BaseNamedObjects\Local\SM0:7856:120:WilError_03
Source: C:\Users\user\Desktop\jcXViWLNuc.exe Command line argument: \~F 1_2_0040A1D6
Source: C:\Users\user\Desktop\jcXViWLNuc.exe Command line argument: \~F 1_2_0040A1D6
Source: C:\Users\user\Desktop\jcXViWLNuc.exe Command line argument: Software\ 1_2_0040A1D6
Source: C:\Users\user\Desktop\jcXViWLNuc.exe Command line argument: Rmc-MG8NXC 1_2_0040A1D6
Source: C:\Users\user\Desktop\jcXViWLNuc.exe Command line argument: Exe 1_2_0040A1D6
Source: C:\Users\user\Desktop\jcXViWLNuc.exe Command line argument: Exe 1_2_0040A1D6
Source: C:\Users\user\Desktop\jcXViWLNuc.exe Command line argument: licence 1_2_0040A1D6
Source: C:\Users\user\Desktop\jcXViWLNuc.exe Command line argument: Administrator 1_2_0040A1D6
Source: C:\Users\user\Desktop\jcXViWLNuc.exe Command line argument: User 1_2_0040A1D6
Source: C:\Users\user\Desktop\jcXViWLNuc.exe Command line argument: del 1_2_0040A1D6
Source: C:\Users\user\Desktop\jcXViWLNuc.exe Command line argument: del 1_2_0040A1D6
Source: C:\Users\user\Desktop\jcXViWLNuc.exe Command line argument: del 1_2_0040A1D6
Source: jcXViWLNuc.exe Static PE information: Section: .text IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ
Source: C:\Users\user\Desktop\jcXViWLNuc.exe Key opened: HKEY_CURRENT_USER\Software\Policies\Microsoft\Windows\Safer\CodeIdentifiers Jump to behavior
Source: jcXViWLNuc.exe Virustotal: Detection: 79%
Source: jcXViWLNuc.exe ReversingLabs: Detection: 84%
Source: unknown Process created: C:\Users\user\Desktop\jcXViWLNuc.exe "C:\Users\user\Desktop\jcXViWLNuc.exe"
Source: C:\Users\user\Desktop\jcXViWLNuc.exe Process created: C:\Windows\System32\conhost.exe C:\Windows\system32\conhost.exe 0xffffffff -ForceV1
Source: C:\Users\user\Desktop\jcXViWLNuc.exe Section loaded: apphelp.dll Jump to behavior
Source: C:\Users\user\Desktop\jcXViWLNuc.exe Section loaded: winmm.dll Jump to behavior
Source: C:\Users\user\Desktop\jcXViWLNuc.exe Section loaded: urlmon.dll Jump to behavior
Source: C:\Users\user\Desktop\jcXViWLNuc.exe Section loaded: wininet.dll Jump to behavior
Source: C:\Users\user\Desktop\jcXViWLNuc.exe Section loaded: iertutil.dll Jump to behavior
Source: C:\Users\user\Desktop\jcXViWLNuc.exe Section loaded: srvcli.dll Jump to behavior
Source: C:\Users\user\Desktop\jcXViWLNuc.exe Section loaded: netutils.dll Jump to behavior
Source: C:\Users\user\Desktop\jcXViWLNuc.exe Section loaded: iphlpapi.dll Jump to behavior
Source: C:\Users\user\Desktop\jcXViWLNuc.exe Section loaded: rstrtmgr.dll Jump to behavior
Source: C:\Users\user\Desktop\jcXViWLNuc.exe Section loaded: ncrypt.dll Jump to behavior
Source: C:\Users\user\Desktop\jcXViWLNuc.exe Section loaded: ntasn1.dll Jump to behavior
Source: C:\Users\user\Desktop\jcXViWLNuc.exe Section loaded: uxtheme.dll Jump to behavior
Source: C:\Users\user\Desktop\jcXViWLNuc.exe Section loaded: sspicli.dll Jump to behavior
Source: C:\Users\user\Desktop\jcXViWLNuc.exe Section loaded: windows.storage.dll Jump to behavior
Source: C:\Users\user\Desktop\jcXViWLNuc.exe Section loaded: wldp.dll Jump to behavior
Source: C:\Users\user\Desktop\jcXViWLNuc.exe Section loaded: mswsock.dll Jump to behavior
Source: jcXViWLNuc.exe Static PE information: data directory type: IMAGE_DIRECTORY_ENTRY_IMPORT
Source: jcXViWLNuc.exe Static PE information: data directory type: IMAGE_DIRECTORY_ENTRY_RESOURCE
Source: jcXViWLNuc.exe Static PE information: data directory type: IMAGE_DIRECTORY_ENTRY_BASERELOC
Source: jcXViWLNuc.exe Static PE information: data directory type: IMAGE_DIRECTORY_ENTRY_DEBUG
Source: jcXViWLNuc.exe Static PE information: data directory type: IMAGE_DIRECTORY_ENTRY_LOAD_CONFIG
Source: jcXViWLNuc.exe Static PE information: data directory type: IMAGE_DIRECTORY_ENTRY_IAT
Source: jcXViWLNuc.exe Static PE information: data directory type: IMAGE_DIRECTORY_ENTRY_DEBUG
Source: jcXViWLNuc.exe Static PE information: Data directory: IMAGE_DIRECTORY_ENTRY_IMPORT is in: .rdata
Source: jcXViWLNuc.exe Static PE information: Data directory: IMAGE_DIRECTORY_ENTRY_RESOURCE is in: .rsrc
Source: jcXViWLNuc.exe Static PE information: Data directory: IMAGE_DIRECTORY_ENTRY_BASERELOC is in: .reloc
Source: jcXViWLNuc.exe Static PE information: Data directory: IMAGE_DIRECTORY_ENTRY_LOAD_CONFIG is in: .rdata
Source: jcXViWLNuc.exe Static PE information: Data directory: IMAGE_DIRECTORY_ENTRY_IAT is in: .rdata
Contains functionality to dynamically determine API calls
Source: C:\Users\user\Desktop\jcXViWLNuc.exe Code function: 1_2_00414EA2 LoadLibraryA,LoadLibraryA,GetProcAddress,GetProcAddress,GetModuleHandleA,GetModuleHandleA,GetProcAddress,LoadLibraryA,GetProcAddress,LoadLibraryA,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,GetModuleHandleA,GetProcAddress,GetModuleHandleA,GetProcAddress,LoadLibraryA,GetProcAddress,LoadLibraryA,GetProcAddress,GetModuleHandleA,GetProcAddress,GetModuleHandleA,GetProcAddress,LoadLibraryA,GetProcAddress,LoadLibraryA,GetProcAddress,LoadLibraryA,GetProcAddress,LoadLibraryA,GetProcAddress, 1_2_00414EA2
Uses code obfuscation techniques (call, push, ret)
Source: C:\Users\user\Desktop\jcXViWLNuc.exe Code function: 1_2_0044A5D6 push ecx; ret 1_2_0044A5E9
Source: C:\Users\user\Desktop\jcXViWLNuc.exe Code function: 1_2_0042C766 push ecx; ret 1_2_0042C779
Source: C:\Users\user\Desktop\jcXViWLNuc.exe Code function: 1_2_0044AE38 push eax; ret 1_2_0044AE56
Contains functionality to download and launch executables
Source: C:\Users\user\Desktop\jcXViWLNuc.exe Code function: 1_2_00404A3B ShellExecuteW,URLDownloadToFileW, 1_2_00404A3B
Source: C:\Users\user\Desktop\jcXViWLNuc.exe Code function: 1_2_0041311D OpenSCManagerW,OpenServiceW,CloseServiceHandle,StartServiceW,CloseServiceHandle,CloseServiceHandle,CloseServiceHandle, 1_2_0041311D
Extensive use of GetProcAddress (often used to hide API calls)
Source: C:\Users\user\Desktop\jcXViWLNuc.exe Code function: 1_2_00414EA2 LoadLibraryA,LoadLibraryA,GetProcAddress,GetProcAddress,GetModuleHandleA,GetModuleHandleA,GetProcAddress,LoadLibraryA,GetProcAddress,LoadLibraryA,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,GetModuleHandleA,GetProcAddress,GetModuleHandleA,GetProcAddress,LoadLibraryA,GetProcAddress,LoadLibraryA,GetProcAddress,GetModuleHandleA,GetProcAddress,GetModuleHandleA,GetProcAddress,LoadLibraryA,GetProcAddress,LoadLibraryA,GetProcAddress,LoadLibraryA,GetProcAddress,LoadLibraryA,GetProcAddress, 1_2_00414EA2
Source: C:\Users\user\Desktop\jcXViWLNuc.exe Process information set: NOOPENFILEERRORBOX Jump to behavior

Malware Analysis System Evasion
barindex
Delayed program exit found
Source: C:\Users\user\Desktop\jcXViWLNuc.exe Code function: 1_2_0040A6C0 Sleep,ExitProcess, 1_2_0040A6C0
Contains functionality to enumerate running services
Source: C:\Users\user\Desktop\jcXViWLNuc.exe Code function: OpenSCManagerA,EnumServicesStatusW,GetLastError,EnumServicesStatusW,OpenServiceW,QueryServiceConfigW,GetLastError,QueryServiceConfigW,CloseServiceHandle,CloseServiceHandle, 1_2_00412E4B
Found a high number of Window / User specific system calls (may be a loop to detect user behavior)
Source: C:\Users\user\Desktop\jcXViWLNuc.exe Window / User API: threadDelayed 4086 Jump to behavior
Source: C:\Users\user\Desktop\jcXViWLNuc.exe Window / User API: threadDelayed 5862 Jump to behavior
Found evasive API chain (may stop execution after accessing registry keys)
Source: C:\Users\user\Desktop\jcXViWLNuc.exe Evasive API call chain: RegOpenKey,DecisionNodes,Sleep
May sleep (evasive loops) to hinder dynamic analysis
Source: C:\Users\user\Desktop\jcXViWLNuc.exe TID: 7896 Thread sleep time: -12258000s >= -30000s Jump to behavior
Source: C:\Users\user\Desktop\jcXViWLNuc.exe TID: 7896 Thread sleep time: -17586000s >= -30000s Jump to behavior
Sample execution stops while process was sleeping (likely an evasion)
Source: C:\Windows\System32\conhost.exe Last function: Thread delayed
Source: C:\Windows\System32\conhost.exe Last function: Thread delayed
Source: C:\Users\user\Desktop\jcXViWLNuc.exe Code function: 1_2_004081F9 FindFirstFileA,FindClose,FindNextFileA,DeleteFileA,GetLastError,FindNextFileA,FindClose,FindClose, 1_2_004081F9
Source: C:\Users\user\Desktop\jcXViWLNuc.exe Code function: 1_2_004072E5 __EH_prolog,__CxxThrowException@8,FindFirstFileW,FindNextFileW,FindClose,FindClose, 1_2_004072E5
Source: C:\Users\user\Desktop\jcXViWLNuc.exe Code function: 1_2_0041474A FindFirstFileW,FindNextFileW,RemoveDirectoryW,FindClose,RemoveDirectoryW,SetFileAttributesW,DeleteFileW,GetLastError,FindClose, 1_2_0041474A
Source: C:\Users\user\Desktop\jcXViWLNuc.exe Code function: 1_2_00407733 __EH_prolog,FindFirstFileW,FindNextFileW,FindClose,FindClose, 1_2_00407733
Source: C:\Users\user\Desktop\jcXViWLNuc.exe Code function: 1_2_00440A49 FindFirstFileExA, 1_2_00440A49
Source: C:\Users\user\Desktop\jcXViWLNuc.exe Code function: 1_2_00404CF3 FindFirstFileW,FindNextFileW, 1_2_00404CF3
Source: C:\Users\user\Desktop\jcXViWLNuc.exe Code function: 1_2_00405C8E __EH_prolog,FindFirstFileW,__CxxThrowException@8,FindNextFileW,FindClose, 1_2_00405C8E
Source: C:\Users\user\Desktop\jcXViWLNuc.exe Code function: 1_2_00407FDE FindFirstFileA,FindClose,DeleteFileA,GetLastError,DeleteFileA,GetLastError,FindNextFileA,FindClose, 1_2_00407FDE
Source: C:\Users\user\Desktop\jcXViWLNuc.exe Code function: 1_2_0040511A SetEvent,GetFileAttributesW,DeleteFileW,ShellExecuteW,GetLogicalDriveStringsA,SetFileAttributesW,DeleteFileA,Sleep,StrToIntA,CreateDirectoryW, 1_2_0040511A
Source: jcXViWLNuc.exe, 00000001.00000002.3817487536.000000000081E000.00000004.00000020.00020000.00000000.sdmp Binary or memory string: Hyper-V RAW%SystemRoot%\system32\mswsock.dll}
Contains functionality to check if a debugger is running (IsDebuggerPresent)
Source: C:\Users\user\Desktop\jcXViWLNuc.exe Code function: 1_2_004320EC IsDebuggerPresent,SetUnhandledExceptionFilter,UnhandledExceptionFilter, 1_2_004320EC
Contains functionality to dynamically determine API calls
Source: C:\Users\user\Desktop\jcXViWLNuc.exe Code function: 1_2_00414EA2 LoadLibraryA,LoadLibraryA,GetProcAddress,GetProcAddress,GetModuleHandleA,GetModuleHandleA,GetProcAddress,LoadLibraryA,GetProcAddress,LoadLibraryA,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,GetModuleHandleA,GetProcAddress,GetModuleHandleA,GetProcAddress,LoadLibraryA,GetProcAddress,LoadLibraryA,GetProcAddress,GetModuleHandleA,GetProcAddress,GetModuleHandleA,GetProcAddress,LoadLibraryA,GetProcAddress,LoadLibraryA,GetProcAddress,LoadLibraryA,GetProcAddress,LoadLibraryA,GetProcAddress, 1_2_00414EA2
Contains functionality to read the PEB
Source: C:\Users\user\Desktop\jcXViWLNuc.exe Code function: 1_2_004389B4 mov eax, dword ptr fs:[00000030h] 1_2_004389B4
Contains functionality which may be used to detect a debugger (GetProcessHeap)
Source: C:\Users\user\Desktop\jcXViWLNuc.exe Code function: 1_2_0040CB6C SetLastError,GetNativeSystemInfo,GetProcessHeap,HeapAlloc,SetLastError, 1_2_0040CB6C
Source: C:\Users\user\Desktop\jcXViWLNuc.exe Code function: 1_2_004320EC IsDebuggerPresent,SetUnhandledExceptionFilter,UnhandledExceptionFilter, 1_2_004320EC
Source: C:\Users\user\Desktop\jcXViWLNuc.exe Code function: 1_2_0042C52B IsProcessorFeaturePresent,IsDebuggerPresent,SetUnhandledExceptionFilter,UnhandledExceptionFilter, 1_2_0042C52B
Source: C:\Users\user\Desktop\jcXViWLNuc.exe Code function: 1_2_0042C6BD SetUnhandledExceptionFilter, 1_2_0042C6BD
Source: C:\Users\user\Desktop\jcXViWLNuc.exe Code function: 1_2_0042C8EC SetUnhandledExceptionFilter,UnhandledExceptionFilter,GetCurrentProcess,TerminateProcess, 1_2_0042C8EC
Contains functionality to simulate mouse events
Source: C:\Users\user\Desktop\jcXViWLNuc.exe Code function: 1_2_004124EF mouse_event, 1_2_004124EF
Contains functionality to query CPU information (cpuid)
Source: C:\Users\user\Desktop\jcXViWLNuc.exe Code function: 1_2_0042C37B cpuid 1_2_0042C37B
Contains functionality to query locales information (e.g. system language)
Source: C:\Users\user\Desktop\jcXViWLNuc.exe Code function: EnumSystemLocalesW, 1_2_0044416B
Source: C:\Users\user\Desktop\jcXViWLNuc.exe Code function: EnumSystemLocalesW, 1_2_00444120
Source: C:\Users\user\Desktop\jcXViWLNuc.exe Code function: EnumSystemLocalesW, 1_2_00444206
Source: C:\Users\user\Desktop\jcXViWLNuc.exe Code function: GetLocaleInfoW,GetLocaleInfoW,GetLocaleInfoW, 1_2_00444293
Source: C:\Users\user\Desktop\jcXViWLNuc.exe Code function: GetLocaleInfoW, 1_2_0043D31C
Source: C:\Users\user\Desktop\jcXViWLNuc.exe Code function: GetLocaleInfoW, 1_2_004444E3
Source: C:\Users\user\Desktop\jcXViWLNuc.exe Code function: GetLocaleInfoW,GetLocaleInfoW,GetACP, 1_2_0044460C
Source: C:\Users\user\Desktop\jcXViWLNuc.exe Code function: GetLocaleInfoW, 1_2_00444713
Source: C:\Users\user\Desktop\jcXViWLNuc.exe Code function: GetLocaleInfoA, 1_2_0040A7D3
Source: C:\Users\user\Desktop\jcXViWLNuc.exe Code function: GetUserDefaultLCID,IsValidCodePage,IsValidLocale,GetLocaleInfoW,GetLocaleInfoW, 1_2_004447E0
Source: C:\Users\user\Desktop\jcXViWLNuc.exe Code function: IsValidCodePage,_wcschr,_wcschr,GetLocaleInfoW, 1_2_00443EA8
Source: C:\Users\user\Desktop\jcXViWLNuc.exe Code function: EnumSystemLocalesW, 1_2_0043CEB5
Source: C:\Users\user\Desktop\jcXViWLNuc.exe Code function: 1_2_00413B81 GetLocalTime, 1_2_00413B81
Source: C:\Users\user\Desktop\jcXViWLNuc.exe Code function: 1_2_00413C9F CreateThread,GetComputerNameExW,GetUserNameW, 1_2_00413C9F

Stealing of Sensitive Information
barindex
Yara detected Remcos RAT
Source: Yara match File source: jcXViWLNuc.exe, type: SAMPLE
Source: Yara match File source: 1.0.jcXViWLNuc.exe.400000.0.unpack, type: UNPACKEDPE
Source: Yara match File source: 1.2.jcXViWLNuc.exe.400000.0.unpack, type: UNPACKEDPE
Source: Yara match File source: 00000001.00000002.3817487536.000000000081E000.00000004.00000020.00020000.00000000.sdmp, type: MEMORY
Source: Yara match File source: 00000001.00000002.3817171743.000000000044D000.00000002.00000001.01000000.00000003.sdmp, type: MEMORY
Source: Yara match File source: 00000001.00000000.1374177573.000000000044D000.00000002.00000001.01000000.00000003.sdmp, type: MEMORY
Source: Yara match File source: Process Memory Space: jcXViWLNuc.exe PID: 7836, type: MEMORYSTR
Contains functionality to steal Chrome passwords or cookies
Source: C:\Users\user\Desktop\jcXViWLNuc.exe Code function: \AppData\Local\Google\Chrome\User Data\Default\Login Data 1_2_00407EC0
Contains functionality to steal Firefox passwords or cookies
Source: C:\Users\user\Desktop\jcXViWLNuc.exe Code function: \AppData\Roaming\Mozilla\Firefox\Profiles\ 1_2_00407FDE
Source: C:\Users\user\Desktop\jcXViWLNuc.exe Code function: \key3.db 1_2_00407FDE

Remote Access Functionality
barindex
Detected Remcos RAT
Source: C:\Users\user\Desktop\jcXViWLNuc.exe Mutex created: \Sessions\1\BaseNamedObjects\Rmc-MG8NXC Jump to behavior
Yara detected Remcos RAT
Source: Yara match File source: jcXViWLNuc.exe, type: SAMPLE
Source: Yara match File source: 1.0.jcXViWLNuc.exe.400000.0.unpack, type: UNPACKEDPE
Source: Yara match File source: 1.2.jcXViWLNuc.exe.400000.0.unpack, type: UNPACKEDPE
Source: Yara match File source: 00000001.00000002.3817487536.000000000081E000.00000004.00000020.00020000.00000000.sdmp, type: MEMORY
Source: Yara match File source: 00000001.00000002.3817171743.000000000044D000.00000002.00000001.01000000.00000003.sdmp, type: MEMORY
Source: Yara match File source: 00000001.00000000.1374177573.000000000044D000.00000002.00000001.01000000.00000003.sdmp, type: MEMORY
Source: Yara match File source: Process Memory Space: jcXViWLNuc.exe PID: 7836, type: MEMORYSTR
Contains functionality to launch a control a shell (cmd.exe)
Source: C:\Users\user\Desktop\jcXViWLNuc.exe Code function: cmd.exe 1_2_00403B0B
windows-stand
Hide Legend

Legend:

  • Process
  • Signature
  • Created File
  • DNS/IP Info
  • Is Dropped
  • Is Windows Process
  • Number of created Registry Values
  • Number of created Files
  • Visual Basic
  • Delphi
  • Java
  • .Net C# or VB.NET
  • C, C++ or other language
  • Is malicious
  • Internet
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1465914 Sample: jcXViWLNuc.exe Startdate: 02/07/2024 Architecture: WINDOWS Score: 100 14 Found malware configuration 2->14 16 Malicious sample detected (through community Yara rule) 2->16 18 Antivirus / Scanner detection for submitted sample 2->18 20 4 other signatures 2->20 6 jcXViWLNuc.exe 2 1 2->6         started        process3 dnsIp4 12 127.0.0.1 unknown unknown 6->12 22 Detected Remcos RAT 6->22 24 Contains functionalty to change the wallpaper 6->24 26 Contains functionality to steal Chrome passwords or cookies 6->26 28 2 other signatures 6->28 10 conhost.exe 6->10         started        signatures5 process6
  • 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

Private

IP
127.0.0.1

Contacted URLs

Name Malicious Antivirus Detection Reputation
127.0.0.1 true
  • 0%, Virustotal, Browse
  • Avira URL Cloud: safe
 unknown