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Windows
Analysis Report
7b8wRbnmKu.exe
Overview
General Information
Sample Name: | 7b8wRbnmKu.exe (renamed file extension from none to exe, renamed because original name is a hash value) |
Original Sample Name: | 24cb55a207a9eb0047a6acf94c92ea7eac1540e6cece817915e6594887318961 |
Analysis ID: | 890233 |
MD5: | e39b8c5521c7df36ee92ead621a58ed9 |
SHA1: | c438abeca3808df05a4d8b33a2e5ae950cf7faf6 |
SHA256: | 24cb55a207a9eb0047a6acf94c92ea7eac1540e6cece817915e6594887318961 |
Infos: | |
Detection
Score: | 100 |
Range: | 0 - 100 |
Whitelisted: | false |
Confidence: | 100% |
Signatures
Multi AV Scanner detection for submitted file
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Multi AV Scanner detection for dropped file
Snort IDS alert for network traffic
Installs a global keyboard hook
PE file has a writeable .text section
Contains functionalty to change the wallpaper
Creates an undocumented autostart registry key
Machine Learning detection for dropped file
Drops executables to the windows directory (C:\Windows) and starts them
Uses dynamic DNS services
Drops PE files with benign system names
Uses 32bit PE files
Queries the volume information (name, serial number etc) of a device
Contains functionality to query locales information (e.g. system language)
Deletes files inside the Windows folder
May sleep (evasive loops) to hinder dynamic analysis
Uses code obfuscation techniques (call, push, ret)
Creates files inside the system directory
PE file contains sections with non-standard names
Internet Provider seen in connection with other malware
Detected potential crypto function
Found potential string decryption / allocating functions
Contains functionality to call native functions
Contains functionality to enumerate running services
Contains functionality to check if a window is minimized (may be used to check if an application is visible)
Contains functionality to dynamically determine API calls
Contains functionality to read the clipboard data
Contains functionality to simulate keystroke presses
Contains functionality which may be used to detect a debugger (GetProcessHeap)
IP address seen in connection with other malware
Contains long sleeps (>= 3 min)
Creates a DirectInput object (often for capturing keystrokes)
Found inlined nop instructions (likely shell or obfuscated code)
Drops PE files
Uses a known web browser user agent for HTTP communication
Drops PE files to the windows directory (C:\Windows)
Contains functionality to open a port and listen for incoming connection (possibly a backdoor)
Uses SMTP (mail sending)
Detected non-DNS traffic on DNS port
Contains functionality to retrieve information about pressed keystrokes
Contains functionality to detect sandboxes (mouse cursor move detection)
Found large amount of non-executed APIs
Contains functionality to delete services
Creates a process in suspended mode (likely to inject code)
Classification
- System is w10x64
- 7b8wRbnmKu.exe (PID: 5676 cmdline:
C:\Users\u ser\Deskto p\7b8wRbnm Ku.exe MD5: E39B8C5521C7DF36EE92EAD621A58ED9) - lncom.exe (PID: 7348 cmdline:
"C:\Window s\system32 \lncom.exe " MD5: B0692CE1EEE360FD4F246BDA4355BCFF) - fservice.exe (PID: 7496 cmdline:
C:\Windows \system32\ fservice.e xe MD5: B0692CE1EEE360FD4F246BDA4355BCFF) - services.exe (PID: 7544 cmdline:
C:\Windows \services. exe -XP MD5: B0692CE1EEE360FD4F246BDA4355BCFF) - cmd.exe (PID: 7476 cmdline:
C:\Windows \system32\ cmd.exe /c C:\Users\ user\Deskt op\7B8WRB~ 1.EXE.bat MD5: F3BDBE3BB6F734E357235F4D5898582D) - conhost.exe (PID: 7504 cmdline:
C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: EA777DEEA782E8B4D7C7C33BBF8A4496)
- cleanup
⊘No configs have been found
⊘No yara matches
⊘No Sigma rule has matched
Timestamp: | 192.168.2.3188.114.97.749700802803278 06/19/23-11:19:14.587143 |
SID: | 2803278 |
Source Port: | 49700 |
Destination Port: | 80 |
Protocol: | TCP |
Classtype: | A Network Trojan was detected |
Timestamp: | 192.168.2.367.195.204.7949703252802174 06/19/23-11:19:15.552596 |
SID: | 2802174 |
Source Port: | 49703 |
Destination Port: | 25 |
Protocol: | TCP |
Classtype: | A Network Trojan was detected |
Click to jump to signature section
Show All Signature Results
AV Detection |
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Source: | ReversingLabs: | |||
Source: | Virustotal: | Perma Link |
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Source: | ReversingLabs: |
Source: | Joe Sandbox ML: | ||
Source: | Joe Sandbox ML: | ||
Source: | Joe Sandbox ML: | ||
Source: | Joe Sandbox ML: |
Source: | Static PE information: |
Source: | Code function: | 4_2_00494BD0 | |
Source: | Code function: | 4_2_0048B4A8 | |
Source: | Code function: | 4_2_0048B584 |
Source: | Code function: | 4_2_004410A4 |
Networking |
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Source: | Snort IDS: | ||
Source: | Snort IDS: |
Source: | DNS query: |
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Source: | HTTP traffic detected: | ||
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Source: | String found in binary or memory: | ||
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Source: | String found in binary or memory: | ||
Source: | String found in binary or memory: | ||
Source: | String found in binary or memory: | ||
Source: | String found in binary or memory: |
Source: | DNS traffic detected: |
Source: | Code function: | 4_2_0043233C |
Source: | HTTP traffic detected: | ||
Source: | HTTP traffic detected: |
Key, Mouse, Clipboard, Microphone and Screen Capturing |
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Source: | Windows user hook set: | Jump to behavior | ||
Source: | Windows user hook set: | Jump to behavior |
Source: | Code function: | 4_2_0045F618 |
Source: | Binary or memory string: |
Source: | Code function: | 4_2_00479380 |
Spam, unwanted Advertisements and Ransom Demands |
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Source: | Code function: | 4_2_0040E25C |
System Summary |
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Source: | Static PE information: |
Source: | Static PE information: |
Source: | File deleted: | Jump to behavior |
Source: | File created: | Jump to behavior |
Source: | Code function: | 0_2_004011B0 | |
Source: | Code function: | 4_2_00406020 | |
Source: | Code function: | 4_2_0049A0A0 | |
Source: | Code function: | 4_2_004B61E8 | |
Source: | Code function: | 4_2_004B0198 | |
Source: | Code function: | 4_2_00458658 | |
Source: | Code function: | 4_2_004B6714 | |
Source: | Code function: | 4_2_004051CC |
Source: | Code function: | 4_2_004327B8 | |
Source: | Code function: | 4_2_0046D7B8 | |
Source: | Code function: | 4_2_0044220C | |
Source: | Code function: | 4_2_0047047C | |
Source: | Code function: | 4_2_00458658 | |
Source: | Code function: | 4_2_00432678 | |
Source: | Code function: | 4_2_0043A784 | |
Source: | Code function: | 4_2_00487158 | |
Source: | Code function: | 4_2_00479380 |
Source: | Code function: | 4_2_004088E4 |
Source: | ReversingLabs: | ||
Source: | Virustotal: |
Source: | File read: | Jump to behavior |
Source: | Static PE information: |
Source: | Key opened: | Jump to behavior |
Source: | Process created: | |||
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Source: | Process created: | Jump to behavior | ||
Source: | Process created: | Jump to behavior | ||
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Source: | Process created: | Jump to behavior |
Source: | Key value queried: | Jump to behavior |
Source: | File created: | Jump to behavior |
Source: | Classification label: |
Source: | File read: | Jump to behavior |
Source: | Code function: | 4_2_0040D564 |
Source: | Code function: | 4_2_0045CCB4 |
Source: | Key opened: | Jump to behavior | ||
Source: | Key opened: | Jump to behavior | ||
Source: | Key opened: | Jump to behavior |
Source: | Code function: | 4_2_004085C4 |
Source: | Code function: | 4_2_004124A0 |
Source: | Mutant created: |
Source: | Code function: | 4_2_00481F40 |
Source: | Process created: |
Source: | File read: | Jump to behavior | ||
Source: | File read: | Jump to behavior | ||
Source: | File read: | Jump to behavior | ||
Source: | File read: | Jump to behavior | ||
Source: | File read: | Jump to behavior | ||
Source: | File read: | Jump to behavior |
Source: | Code function: | 4_2_00452147 | |
Source: | Code function: | 4_2_00480408 | |
Source: | Code function: | 4_2_0048044C | |
Source: | Code function: | 4_2_004885FF | |
Source: | Code function: | 4_2_00462844 | |
Source: | Code function: | 4_2_00476784 | |
Source: | Code function: | 4_2_004B8846 | |
Source: | Code function: | 4_2_004B893C | |
Source: | Code function: | 4_2_00448A24 | |
Source: | Code function: | 4_2_00470C20 | |
Source: | Code function: | 4_2_00488DF8 | |
Source: | Code function: | 4_2_00470E7D | |
Source: | Code function: | 4_2_0044100D | |
Source: | Code function: | 4_2_00453020 | |
Source: | Code function: | 4_2_00450FA4 | |
Source: | Code function: | 4_2_00401078 | |
Source: | Code function: | 4_2_004AD104 | |
Source: | Code function: | 4_2_00489118 | |
Source: | Code function: | 4_2_00459197 | |
Source: | Code function: | 4_2_00489158 | |
Source: | Code function: | 4_2_004891A8 | |
Source: | Code function: | 4_2_004891E0 | |
Source: | Code function: | 4_2_0048B1B9 | |
Source: | Code function: | 4_2_00489265 | |
Source: | Code function: | 4_2_0044723C | |
Source: | Code function: | 4_2_004012AC | |
Source: | Code function: | 4_2_004953CD | |
Source: | Code function: | 4_2_004954BF | |
Source: | Code function: | 4_2_00447400 | |
Source: | Code function: | 4_2_0044D404 | |
Source: | Code function: | 4_2_00489418 |
Source: | Static PE information: |
Source: | Code function: | 4_2_00418B3C |
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Persistence and Installation Behavior |
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Source: | Executable created and started: | Jump to behavior | ||
Source: | Executable created and started: | Jump to behavior | ||
Source: | Executable created and started: | Jump to behavior |
Source: | File created: | Jump to dropped file |
Source: | File created: | Jump to dropped file | ||
Source: | File created: | Jump to dropped file | ||
Source: | File created: | Jump to dropped file | ||
Source: | File created: | Jump to dropped file | ||
Source: | File created: | Jump to dropped file | ||
Source: | File created: | Jump to dropped file |
Source: | File created: | Jump to dropped file | ||
Source: | File created: | Jump to dropped file | ||
Source: | File created: | Jump to dropped file | ||
Source: | File created: | Jump to dropped file | ||
Source: | File created: | Jump to dropped file | ||
Source: | File created: | Jump to dropped file |
Boot Survival |
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Source: | Key value created or modified: | Jump to behavior |
Source: | Code function: | 4_2_004085C4 |
Source: | Code function: | 4_2_0046D840 | |
Source: | Code function: | 4_2_00488880 | |
Source: | Code function: | 4_2_0047ABBC | |
Source: | Code function: | 4_2_0046ACDC | |
Source: | Code function: | 4_2_0047B45C |
Source: | Process information set: | Jump to behavior | ||
Source: | Process information set: | Jump to behavior | ||
Source: | Process information set: | Jump to behavior | ||
Source: | Process information set: | Jump to behavior | ||
Source: | Process information set: | Jump to behavior | ||
Source: | Process information set: | Jump to behavior |
Source: | Thread sleep time: | Jump to behavior |
Source: | Code function: | 4_2_004080A0 | |
Source: | Code function: | 4_2_00408478 | |
Source: | Code function: | 4_2_004085C4 | |
Source: | Code function: | 4_2_0040871C | |
Source: | Code function: | 4_2_004088E4 |
Source: | Thread delayed: | Jump to behavior |
Source: | Code function: | 4_2_0046CF24 |
Source: | API coverage: |
Source: | Code function: | 4_2_0045D244 |
Source: | Code function: | 4_2_00494BD0 | |
Source: | Code function: | 4_2_0048B4A8 | |
Source: | Code function: | 4_2_0048B584 |
Source: | Thread delayed: | Jump to behavior |
Source: | API call chain: | graph_8-2130 |
Source: | Binary or memory string: |
Source: | Code function: | 4_2_00418B3C |
Source: | Code function: | 4_2_00402184 |
Source: | Code function: | 4_2_0042A528 |
Source: | Process created: | Jump to behavior |
Source: | Binary or memory string: | ||
Source: | Binary or memory string: | ||
Source: | Binary or memory string: |