Overview

overview

10

Static

static

Confirmati...897.js

windows7-x64

10

Confirmati...897.js

windows10-2004-x64

10

Analysis

  • max time kernel
    601s
  • max time network
    599s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220722-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220722-enlocale:en-usos:windows10-2004-x64system
  • submitted
    04/08/2022, 05:54

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General

  • Target
    Confirmation Transfer Note MT103_000367276897.js
  • Size 32KB
  • Sample220804-gl6k7abec6
  • SHA256 6f94b74818b516f87c63aceb48b9472caceafdf7e141581b81c4ee1dc879578d
  • MD5 SHA1 SHA512
Score
10/10
wshratpersistencetrojan

Malware Config

Extracted

Family

  • wshrat

C2

  • http://fresh01.ddns.net:2256

Signatures

  • WSHRAT

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

    trojanwshrat
  • Blocklisted process makes network request 64 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 4 IoCs
    persistence
  • Enumerates physical storage devices 1 TTPs

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

  • Script User-Agent 64 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\Confirmation Transfer Note MT103_000367276897.js"
    1⤵
    • Blocklisted process makes network request
    • Checks computer location settings
    • Drops startup file
    • Adds Run key to start application
    • Suspicious use of WriteProcessMemory
    PID:4228
    • C:\Windows\System32\wscript.exe
      "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\fsAQiKTvOP.js"
      2⤵
        PID:4784

    Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

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          Downloads

          fsAQiKTvOP.js
          • Path C:\Users\Admin\AppData\Roaming\fsAQiKTvOP.js
          • Size 1KB
          • SHA256 a090b5965c88481eaf045d6dd7bc86eee034e677110397cf889af30ffc576ead
          • MD5 SHA1 SHA512
          Submit Download