Overview

overview

10

Static

static

xix.js

windows7-x64

10

xix.js

windows10-2004-x64

10

Analysis

  • max time kernel
    147s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220721-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220721-enlocale:en-usos:windows10-2004-x64system
  • submitted
    27/07/2022, 09:18

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General

  • Target
    xix.js
  • Size 219KB
  • Sample220727-k9lsgacdaq
  • SHA256 d6356866d600a2be0fc8589b1dd09b2d04c8bd1bf98699be5f1376f9d88ad4cd
  • MD5 SHA1 SHA512
Score
10/10
wshrattrojan

Malware Config

Extracted

Family

  • wshrat

C2

  • http://1.tcp.au.ngrok.io:25993

Signatures

  • WSHRAT

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

    trojanwshrat
  • Blocklisted process makes network request 20 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • 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 19 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\xix.js
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4100
    • C:\Windows\System32\wscript.exe
      "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\xix.js"
      2⤵
      • Blocklisted process makes network request
      PID:3068

Network

        MITRE ATT&CK Enterprise v6

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        Downloads

        xix.js
        • Path C:\Users\Admin\AppData\Roaming\xix.js
        • Size 219KB
        • SHA256 d6356866d600a2be0fc8589b1dd09b2d04c8bd1bf98699be5f1376f9d88ad4cd
        • MD5 SHA1 SHA512 SSDEEP
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