Overview

overview

10

Static

static

1

2.js

windows7-x64

10

2.js

windows10-2004-x64

10

Analysis

  • max time kernel
    160s
  • max time network
    180s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    31-12-2023 14:12

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General

  • Target

    2.js

  • Size

    412KB

  • MD5

    995afabc172c24b0b7388b40a6efa29d

  • SHA1

    1f0576d6d3175ca5dffa12d172d2d416f53a32f3

  • SHA256

    8ecb9949938b6e6d118e51428eaf609cc0cf5e0f0c3cbc9e5343104bc1dea6e7

  • SHA512

    7b084b76fcd5d68a6cec804e93963c0960b8059c27f77bbe0b4e0c2ea2dc0736c5dc90deb5e9b5a8831fb604907f3616594be7021d2a07fee1998bf673dcc040

  • SSDEEP

    3072:UGuaAxKTzprcjyg1tJ3SqSmVdAbK1vTIh/BScFOaTB3crTmVyoj/ZaahJUE77xKf:6OZXDZ1uh7AXnzp4zp3fIrBq7

Score
10/10
wshratpersistencetrojan

Malware Config

Extracted

Family

wshrat

C2

http://trabajovalle2019.duckdns.org:2040

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.

  • Drops startup file 2 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).

  • Script User-Agent 18 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\2.js
    1⤵
    • Checks computer location settings
    • Drops startup file
    • Adds Run key to start application
    • Suspicious use of WriteProcessMemory
    PID:4452
    • C:\Windows\System32\wscript.exe
      "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\2.js"
      2⤵
      • Blocklisted process makes network request
      • Drops startup file
      • Adds Run key to start application
      PID:1884

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Roaming\2.js
    Filesize

    412KB

    MD5

    995afabc172c24b0b7388b40a6efa29d

    SHA1

    1f0576d6d3175ca5dffa12d172d2d416f53a32f3

    SHA256

    8ecb9949938b6e6d118e51428eaf609cc0cf5e0f0c3cbc9e5343104bc1dea6e7

    SHA512

    7b084b76fcd5d68a6cec804e93963c0960b8059c27f77bbe0b4e0c2ea2dc0736c5dc90deb5e9b5a8831fb604907f3616594be7021d2a07fee1998bf673dcc040

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