Overview

overview

10

Static

static

Scanned docs.js

windows7-x64

10

Scanned docs.js

windows10-2004-x64

10

Analysis

  • max time kernel
    150s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    12/12/2022, 16:59

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General

  • Target
    Scanned docs.js
  • Size 411KB
  • Sample221212-vhdynabh72
  • SHA256 5428c2d89b292aeb9fc0ee759d5ceb56c435cb29bd8992422f06a958d6b41d0a
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10
vjw0rmwshratpersistencetrojanworm

Malware Config

Extracted

Family

  • wshrat

C2

  • http://85.209.135.170:1985

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 36 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
  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Enumerates physical storage devices 1 TTPs

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

  • Script User-Agent 21 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\Scanned docs.js"
    1⤵
    • Checks computer location settings
    • Drops startup file
    • Adds Run key to start application
    • Suspicious use of WriteProcessMemory
    PID:4344
    • C:\Windows\System32\wscript.exe
      "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\sMvHDxwAtp.js"
      2⤵
      • Blocklisted process makes network request
      • Drops startup file
      PID:4032
    • C:\Windows\System32\wscript.exe
      "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\Scanned docs.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:2012
      • C:\Windows\System32\wscript.exe
        "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\sMvHDxwAtp.js"
        3⤵
        • Blocklisted process makes network request
        • Drops startup file
        PID:3596

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        sMvHDxwAtp.js
        • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\sMvHDxwAtp.js
        • Size 62KB
        • SHA256 7f0a13f238d06a1b1b301f307bac699287a8fb07cc5eae4150098cce6d311181
        • MD5 SHA1 SHA512 SSDEEP
        Submit Download

        sMvHDxwAtp.js
        • Path C:\Users\Admin\AppData\Roaming\sMvHDxwAtp.js
        • Size 62KB
        • SHA256 7f0a13f238d06a1b1b301f307bac699287a8fb07cc5eae4150098cce6d311181
        • MD5 SHA1 SHA512 SSDEEP
        Submit Download

        sMvHDxwAtp.js
        • Path C:\Users\Admin\AppData\Roaming\sMvHDxwAtp.js
        • Size 62KB
        • SHA256 7f0a13f238d06a1b1b301f307bac699287a8fb07cc5eae4150098cce6d311181
        • MD5 SHA1 SHA512 SSDEEP
        Submit Download

        Scanned docs.js
        • Path C:\Users\Admin\Scanned docs.js
        • Size 411KB
        • SHA256 5428c2d89b292aeb9fc0ee759d5ceb56c435cb29bd8992422f06a958d6b41d0a
        • MD5 SHA1 SHA512 SSDEEP
        Submit Download