Overview

overview

10

Static

static

POSEP006.js

windows7-x64

10

POSEP006.js

windows10-2004-x64

10

Analysis

  • max time kernel
    150s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23/09/2022, 22:46

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General

  • Target
    POSEP006.js
  • Size 42KB
  • Sample220923-2py1qsabb7
  • SHA256 249286c788bbb4516434642622ad0f06b9ac29995169bc0c2b01f320c61eefee
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10
vjw0rmwshratpersistencetrojanworm

Malware Config

Extracted

Family

  • wshrat

C2

  • http://favour123.duckdns.org:1979

Signatures

  • Vjw0rm

    Vjw0rm is a remote access trojan written in JavaScript.

    trojanwormvjw0rm
  • WSHRAT

    WSHRAT is a variant of Houdini worm and has vbs and js variants.

    trojanwshrat
  • Blocklisted process makes network request 39 IoCs
  • Checks computer location settings 2 TTPs 2 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Drops startup file 5 IoCs
  • Adds Run key to start application 2 TTPs 8 IoCs
    persistence
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Script User-Agent 26 IoCs

    Uses user-agent string associated with script host/environment.

  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Windows\system32\wscript.exe
    wscript.exe C:\Users\Admin\AppData\Local\Temp\POSEP006.js
    1⤵
    • Checks computer location settings
    • Drops startup file
    • Adds Run key to start application
    • Suspicious use of WriteProcessMemory
    PID:1012
    • C:\Windows\System32\wscript.exe
      "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\WchHAujlaB.js"
      2⤵
      • Blocklisted process makes network request
      • Drops startup file
      PID:1816
    • C:\Windows\System32\wscript.exe
      "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\POSEP006.js"
      2⤵
      • Blocklisted process makes network request
      • Checks computer location settings
      • Drops startup file
      • Adds Run key to start application
      • Suspicious use of WriteProcessMemory
      PID:1672
      • C:\Windows\System32\wscript.exe
        "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\WchHAujlaB.js"
        3⤵
        • Blocklisted process makes network request
        • Drops startup file
        PID:2608

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        POSEP006.js
        • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\POSEP006.js
        • Size 42KB
        • SHA256 249286c788bbb4516434642622ad0f06b9ac29995169bc0c2b01f320c61eefee
        • MD5 SHA1 SHA512 SSDEEP
        Submit Download

        WchHAujlaB.js
        • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\WchHAujlaB.js
        • Size 7KB
        • SHA256 084b7dfa59a7ef9c78d02722d2042199d8a963d92825f9dca638c84079e06a72
        • MD5 SHA1 SHA512 SSDEEP
        Submit Download

        POSEP006.js
        • Path C:\Users\Admin\AppData\Roaming\POSEP006.js
        • Size 42KB
        • SHA256 249286c788bbb4516434642622ad0f06b9ac29995169bc0c2b01f320c61eefee
        • MD5 SHA1 SHA512 SSDEEP
        Submit Download

        WchHAujlaB.js
        • Path C:\Users\Admin\AppData\Roaming\WchHAujlaB.js
        • Size 7KB
        • SHA256 084b7dfa59a7ef9c78d02722d2042199d8a963d92825f9dca638c84079e06a72
        • MD5 SHA1 SHA512 SSDEEP
        Submit Download

        WchHAujlaB.js
        • Path C:\Users\Admin\AppData\Roaming\WchHAujlaB.js
        • Size 7KB
        • SHA256 084b7dfa59a7ef9c78d02722d2042199d8a963d92825f9dca638c84079e06a72
        • MD5 SHA1 SHA512 SSDEEP
        Submit Download