Overview

overview

10

Static

static

proof of payment.js

windows7-x64

10

proof of payment.js

windows10-2004-x64

10

Analysis

  • max time kernel
    146s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220901-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
  • submitted
    24/10/2022, 12:10

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General

  • Target
    proof of payment.js
  • Size 39KB
  • Sample221024-pb3esagdb2
  • SHA256 c91bae3e00eabcee11b278419c503cbb28f94372f349ff56d0d04207d5f1e7fe
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10
vjw0rmwshratpersistencetrojanworm

Malware Config

Extracted

Family

  • wshrat

C2

  • http://chuks.wikaba.com:6424

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 27 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\proof of payment.js"
    1⤵
    • Checks computer location settings
    • Drops startup file
    • Adds Run key to start application
    • Suspicious use of WriteProcessMemory
    PID:864
    • C:\Windows\System32\wscript.exe
      "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\IdYElVuqHy.js"
      2⤵
      • Blocklisted process makes network request
      • Drops startup file
      PID:1096
    • C:\Windows\System32\wscript.exe
      "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\proof of payment.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:3992
      • C:\Windows\System32\wscript.exe
        "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\IdYElVuqHy.js"
        3⤵
        • Blocklisted process makes network request
        • Drops startup file
        PID:2312

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        IdYElVuqHy.js
        • Path C:\Users\Admin\AppData\Roaming\IdYElVuqHy.js
        • Size 5KB
        • SHA256 58fed92f08930b98a02befca995c54e3567a49b7542e65dbd17fe3434e273f3e
        • MD5 SHA1 SHA512 SSDEEP
        Submit Download

        IdYElVuqHy.js
        • Path C:\Users\Admin\AppData\Roaming\IdYElVuqHy.js
        • Size 5KB
        • SHA256 58fed92f08930b98a02befca995c54e3567a49b7542e65dbd17fe3434e273f3e
        • MD5 SHA1 SHA512 SSDEEP
        Submit Download

        IdYElVuqHy.js
        • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\IdYElVuqHy.js
        • Size 5KB
        • SHA256 58fed92f08930b98a02befca995c54e3567a49b7542e65dbd17fe3434e273f3e
        • MD5 SHA1 SHA512 SSDEEP
        Submit Download

        proof of payment.js
        • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\proof of payment.js
        • Size 39KB
        • SHA256 c91bae3e00eabcee11b278419c503cbb28f94372f349ff56d0d04207d5f1e7fe
        • MD5 SHA1 SHA512 SSDEEP
        Submit Download

        proof of payment.js
        • Path C:\Users\Admin\AppData\Roaming\proof of payment.js
        • Size 39KB
        • SHA256 c91bae3e00eabcee11b278419c503cbb28f94372f349ff56d0d04207d5f1e7fe
        • MD5 SHA1 SHA512 SSDEEP
        Submit Download