Analysis

  • max time kernel
    150s
  • max time network
    150s
  • platform
    windows10_x64
  • resource
    win10-en-20211014
  • submitted
    19/10/2021, 08:32

General

  • Target

    PO MFG ORDER W124494 - 2021-10-18 0009.js

  • Size

    45KB

  • MD5

    225bff43c2aa2095bbc11f358628e2a1

  • SHA1

    81645b5fa0518200da4b145cb3428e702cb76244

  • SHA256

    1555172a8ed40bc21eb2136625a097d1d4c7c376a71ee89d657d070ec513c4be

  • SHA512

    af5185929580578438032672b418148391b280180cd7b3e1c35435b485809519a67592d0fe99316f8b7253f9bb1536230036ae21c92c635316417278be4c5cd1

Malware Config

Extracted

Family

wshrat

C2

http://fax-joh.dyn-ip24.de:20224

Signatures

  • Vjw0rm

    Vjw0rm is a remote access trojan written in JavaScript.

  • WSHRAT

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

  • Blocklisted process makes network request 64 IoCs
  • Drops startup file 5 IoCs
  • Adds Run key to start application 2 TTPs 12 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Script User-Agent 29 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\PO MFG ORDER W124494 - 2021-10-18 0009.js"
    1⤵
    • Drops startup file
    • Adds Run key to start application
    • Suspicious use of WriteProcessMemory
    PID:3504
    • C:\Windows\System32\wscript.exe
      "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\JDopwXUrEP.js"
      2⤵
      • Blocklisted process makes network request
      • Drops startup file
      • Adds Run key to start application
      PID:3460
    • C:\Windows\System32\wscript.exe
      "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\PO MFG ORDER W124494 - 2021-10-18 0009.js"
      2⤵
      • Blocklisted process makes network request
      • Drops startup file
      • Adds Run key to start application
      • Suspicious use of WriteProcessMemory
      PID:4056
      • C:\Windows\System32\wscript.exe
        "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\JDopwXUrEP.js"
        3⤵
        • Blocklisted process makes network request
        • Drops startup file
        • Adds Run key to start application
        PID:4524

Network

MITRE ATT&CK Enterprise v6

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