Overview

overview

10

Static

static

DoqzRwcwrP_rekova.js

windows7-x64

10

DoqzRwcwrP_rekova.js

windows10-2004-x64

10

Analysis

  • max time kernel
    145s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    11/11/2022, 10:12

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General

  • Target
    DoqzRwcwrP_rekova.js
  • Size 257KB
  • Sample221111-l8hvvsed76
  • SHA256 ee4411b1ca11a51baf35f3b51684942160a361f8a40c96e95732bde420edc903
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10
vjw0rmwshratpersistencetrojanworm

Malware Config

Extracted

Family

  • wshrat

C2

  • http://45.139.105.174:3670

Signatures

  • Vjw0rm

    Vjw0rm is a remote access trojan written in JavaScript.

    trojanwormvjw0rm
  • WSHRAT

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

    trojanwshrat
  • Blocklisted process makes network request 21 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Drops startup file 4 IoCs
  • Adds Run key to start application 2 TTPs 4 IoCs
    persistence
  • 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 14 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\DoqzRwcwrP_rekova.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:4876
    • C:\Windows\System32\wscript.exe
      "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\kFbNMxwkJZ.js"
      2⤵
      • Blocklisted process makes network request
      • Drops startup file
      PID:1196

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        kFbNMxwkJZ.js
        • Path C:\Users\Admin\AppData\Roaming\kFbNMxwkJZ.js
        • Size 6KB
        • SHA256 d75194fd1fd728fc218384206b27c70cf4c08432796bb0e4df18795a7f1c86ea
        • MD5 SHA1 SHA512 SSDEEP
        Submit Download