Analysis

  • max time kernel
    156s
  • max time network
    159s
  • platform
    windows7_x64
  • resource
    win7v20210408
  • submitted
    14/10/2021, 10:09

General

  • Target

    Scan00351.js

  • Size

    1.1MB

  • MD5

    4de228a23fa5bf52c82ec784001163ee

  • SHA1

    027657531c6c03281fb87b8b026200b25c6cf87a

  • SHA256

    2945b78f1df308e1e0c184b47050eb5143c1daadd57ea8eb5eadc4730eaa2f2a

  • SHA512

    0cc24f29b44382869c17a04ffdce0ac243ca67468d92a149260b7bdfb126f3f1257925ba78fbfc7ebc9183a4f27cabe69560c66cdffcfc95bec7b03a5df41799

Malware Config

Extracted

Family

wshrat

C2

http://147.182.241.104:7121

Signatures

  • WSHRAT

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

  • Blocklisted process makes network request 27 IoCs
  • Drops startup file 2 IoCs
  • Adds Run key to start application 2 TTPs 4 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.

Processes

  • C:\Windows\system32\wscript.exe
    wscript.exe C:\Users\Admin\AppData\Local\Temp\Scan00351.js
    1⤵
    • Blocklisted process makes network request
    • Drops startup file
    • Adds Run key to start application
    PID:1996

Network

MITRE ATT&CK Enterprise v6

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Downloads