Overview

overview

10

Static

static

144bc81f1a...82c.js

windows7-x64

10

144bc81f1a...82c.js

windows10-2004-x64

10

Analysis

  • max time kernel
    149s
  • 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
    29/11/2022, 12:37

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General

  • Target
    144bc81f1a91e281159dd7e51ebe682c.js
  • Size 257KB
  • Sample221129-ptyvbaaa77
  • SHA256 8313bc593a1a9dbc02a5a58fcdeeb3840c745d03e47625666afc4848b7e3fdab
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10
vjw0rmwshratpersistencetrojanworm

Malware Config

Extracted

Family

  • wshrat

C2

  • http://grace-fax.home-webserver.de:24150

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 41 IoCs
  • Checks computer location settings 2 TTPs 2 IoCs

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

  • Drops startup file 3 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 28 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\144bc81f1a91e281159dd7e51ebe682c.js
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • Suspicious use of WriteProcessMemory
    PID:4740
    • C:\Windows\System32\wscript.exe
      "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\pGjVjdPxwW.js"
      2⤵
      • Blocklisted process makes network request
      • Drops startup file
      PID:3100
    • C:\Windows\System32\wscript.exe
      "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\144bc81f1a91e281159dd7e51ebe682c.js"
      2⤵
      • Blocklisted process makes network request
      • Checks computer location settings
      • Adds Run key to start application
      • Suspicious use of WriteProcessMemory
      PID:4108
      • C:\Windows\System32\wscript.exe
        "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\pGjVjdPxwW.js"
        3⤵
        • Blocklisted process makes network request
        • Drops startup file
        PID:3040

Network

        MITRE ATT&CK Enterprise v6

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        Downloads

        144bc81f1a91e281159dd7e51ebe682c.js
        • Path C:\Users\Admin\144bc81f1a91e281159dd7e51ebe682c.js
        • Size 257KB
        • SHA256 8313bc593a1a9dbc02a5a58fcdeeb3840c745d03e47625666afc4848b7e3fdab
        • MD5 SHA1 SHA512 SSDEEP
        Submit Download

        pGjVjdPxwW.js
        • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\pGjVjdPxwW.js
        • Size 5KB
        • SHA256 61fa8352e175a46f04b97861a379dca1434f4cd65af1e201454c3bb757226768
        • MD5 SHA1 SHA512 SSDEEP
        Submit Download

        pGjVjdPxwW.js
        • Path C:\Users\Admin\AppData\Roaming\pGjVjdPxwW.js
        • Size 5KB
        • SHA256 61fa8352e175a46f04b97861a379dca1434f4cd65af1e201454c3bb757226768
        • MD5 SHA1 SHA512 SSDEEP
        Submit Download

        pGjVjdPxwW.js
        • Path C:\Users\Admin\AppData\Roaming\pGjVjdPxwW.js
        • Size 5KB
        • SHA256 61fa8352e175a46f04b97861a379dca1434f4cd65af1e201454c3bb757226768
        • MD5 SHA1 SHA512 SSDEEP
        Submit Download