Overview

overview

10

Static

static

1

7e66f9c9c8...722.js

windows7-x64

10

7e66f9c9c8...722.js

windows10-2004-x64

10

Analysis

  • max time kernel
    150s
  • max time network
    146s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23/05/2024, 03:03

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General

  • Target
    7e66f9c9c8dbbd79ea3e3a11dc7e902897ffa2bac730d1df3db8e12f09c44722.js
  • Size 7KB
  • Sample240523-dj7tpabe91
  • SHA256 7e66f9c9c8dbbd79ea3e3a11dc7e902897ffa2bac730d1df3db8e12f09c44722
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10
wshratexecutionpersistencetrojan

Malware Config

Extracted

Family

  • wshrat

C2

  • http://chongmei33.publicvm.com:7045

Signatures

  • WSHRAT

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

    trojanwshrat
  • Blocklisted process makes network request 29 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Drops startup file 2 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
    persistence
  • Command and Scripting Interpreter: JavaScript 1 TTPs
    execution
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies registry class 1 IoCs
  • 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\7e66f9c9c8dbbd79ea3e3a11dc7e902897ffa2bac730d1df3db8e12f09c44722.js
    1⤵
    • Blocklisted process makes network request
    • Checks computer location settings
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:2072
    • C:\Windows\System32\WScript.exe
      "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\GGDRZX.js"
      2⤵
      • Blocklisted process makes network request
      • Drops startup file
      • Adds Run key to start application
      PID:5104

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        GGDRZX.js
        • Path C:\Users\Admin\AppData\Local\Temp\GGDRZX.js
        • Size 262KB
        • SHA256 3d3b93e744a9fc154a70b6a6b709be2806598abb2b00db8e51faa55f961f3076
        • MD5 SHA1 SHA512 SSDEEP
        Submit Download