Overview

overview

10

Static

static

1

proof of payment.js

windows7-x64

10

proof of payment.js

windows10-2004-x64

10

Analysis

  • max time kernel
    145s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230220-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
  • submitted
    11/04/2023, 13:11

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General

  • Target
    proof of payment.js
  • Size 956KB
  • Sample230411-qexjdaeb9w
  • SHA256 efccf4f22b72889b0b4ecba893a50e92faf48b3cdf1eee9680929b7ee4445305
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10
wshrattrojan

Malware Config

Extracted

Family

  • wshrat

C2

  • http://harold.2waky.com:1604

Signatures

  • WSHRAT

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

    trojanwshrat
  • Blocklisted process makes network request 27 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Drops startup file 2 IoCs
  • 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 26 IoCs

    Uses user-agent string associated with script host/environment.

  • Suspicious use of WriteProcessMemory 2 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
    • Suspicious use of WriteProcessMemory
    PID:1128
    • C:\Windows\System32\wscript.exe
      "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\proof of payment.js"
      2⤵
      • Blocklisted process makes network request
      • Drops startup file
      PID:2972

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        proof of payment.js
        • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\proof of payment.js
        • Size 956KB
        • SHA256 60be432af997bc156e3ebe2f608e3363fb36e8a760f223d91c3f3175e670774b
        • 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 956KB
        • SHA256 efccf4f22b72889b0b4ecba893a50e92faf48b3cdf1eee9680929b7ee4445305
        • MD5 SHA1 SHA512 SSDEEP
        Submit Download

        proof of payment.js
        • Path C:\Users\Admin\proof of payment.js
        • Size 956KB
        • SHA256 efccf4f22b72889b0b4ecba893a50e92faf48b3cdf1eee9680929b7ee4445305
        • MD5 SHA1 SHA512 SSDEEP
        Submit Download