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
    146s
  • max time network
    154s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231023-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231023-enlocale:en-usos:windows10-2004-x64system
  • submitted
    27/10/2023, 11:21

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General

  • Target
    proof of payment.js
  • Size 900KB
  • Sample231027-nfzzsafe77
  • SHA256 ed3867747c220cc11f5115b4926c74d63cec22cf2d58f5554b832dd2a02718d3
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10
wshrattrojan

Malware Config

Extracted

Family

  • wshrat

C2

  • http://harold.ns01.info:1604

Signatures

  • WSHRAT

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

    trojanwshrat
  • Blocklisted process makes network request 26 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).

  • Script User-Agent 25 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:3108
    • 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:1316

Network

        MITRE ATT&CK Enterprise v15

        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 900KB
        • SHA256 ed3867747c220cc11f5115b4926c74d63cec22cf2d58f5554b832dd2a02718d3
        • 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 900KB
        • SHA256 ed3867747c220cc11f5115b4926c74d63cec22cf2d58f5554b832dd2a02718d3
        • MD5 SHA1 SHA512 SSDEEP
        Submit Download

        proof of payment.js
        • Path C:\Users\Admin\proof of payment.js
        • Size 900KB
        • SHA256 ed3867747c220cc11f5115b4926c74d63cec22cf2d58f5554b832dd2a02718d3
        • MD5 SHA1 SHA512 SSDEEP
        Submit Download