Analysis

  • max time kernel
    148s
  • max time network
    153s
  • platform
    windows10_x64
  • resource
    win10-en-20211104
  • submitted
    30-11-2021 18:38

General

  • Target

    WSQUOM_Invoice009.js

  • Size

    23KB

  • MD5

    155dfc9ae56dcfde29651063fe46a32b

  • SHA1

    5294ccf5be250ada21486abac58a1f6a9b36ba42

  • SHA256

    69177cc4ac05e4287486bc3b24816762894c3275124b4a20a7671b48bff2b336

  • SHA512

    6673f8c63e7588e5bc483cf8982839b9f8097624399722803047892dd5530cf360e29472d3392a4b6305680c51e59dab378ca72f1089b74a4d1b06a210899b72

Malware Config

Extracted

Family

vjw0rm

C2

http://37.0.10.5:8020

Signatures

  • Vjw0rm

    Vjw0rm is a remote access trojan written in JavaScript.

  • Blocklisted process makes network request 19 IoCs
  • Drops startup file 4 IoCs
  • Adds Run key to start application 2 TTPs 4 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Creates scheduled task(s) 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Windows\system32\wscript.exe
    wscript.exe C:\Users\Admin\AppData\Local\Temp\WSQUOM_Invoice009.js
    1⤵
    • Blocklisted process makes network request
    • Drops startup file
    • Adds Run key to start application
    • Suspicious use of WriteProcessMemory
    PID:2444
    • C:\Windows\System32\wscript.exe
      "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\MrjjTHgZxO.js"
      2⤵
      • Blocklisted process makes network request
      • Drops startup file
      • Adds Run key to start application
      PID:3924
    • C:\Windows\System32\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Local\Temp\WSQUOM_Invoice009.js
      2⤵
      • Creates scheduled task(s)
      PID:2316

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Roaming\MrjjTHgZxO.js

    MD5

    29dd67f739e757152b15f231027c8b34

    SHA1

    66bb78874b15d251950fe2e20b9831a5cbb6c57f

    SHA256

    bc573c51d9fb5b65051dcdebcb46772d29935409bd0858ca38a8df9c18a0db23

    SHA512

    aa21714a0907faa3899a95d736c90223889069dcb45e5580ac590062c316665b292be11cc4e33bf6181eede0a723683296f64581c148c3b66c941deace0f245d

  • memory/2316-120-0x0000000000000000-mapping.dmp

  • memory/3924-118-0x0000000000000000-mapping.dmp