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Overview

overview

10

Static

static

1

Tax Return...765.js

windows7-x64

10

Tax Return...765.js

windows10-2004-x64

10

Analysis

  • max time kernel
    144s
  • max time network
    156s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230703-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230703-enlocale:en-usos:windows10-2004-x64system
  • submitted
    19/07/2023, 12:53

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General

  • Target

    Tax Returns of R58,765.js

  • Size

    1.0MB

  • MD5

    33300fb747c6677625aa17d03e1010f3

  • SHA1

    b1bea456907b59a8182a0f01cc0e90f6e32e2779

  • SHA256

    cbe7d5663fd5359a72f88e44d083703d9625235929c31e0f5b16a0b42cb44d35

  • SHA512

    3c7af332da0a394354b0f3245a7677149ea63bdb5e6b5fcbd7fe984d338c1cecb7e299e127859c1dafc4bf199d3d8c3923d2c32213ab292ccc7aa42558b65764

  • SSDEEP

    6144:QQ7vErztQ9MZIUWrltWZV1+VJaMd5KVPb5emOJ62+ILfahP2CTLqO0EXZ9gsP7Ay:Te

Score
10/10
wshrattrojan

Malware Config

Extracted

Family

wshrat

C2

http://harold.2waky.com:3609

Signatures

  • WSHRAT

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

    trojanwshrat
  • Blocklisted process makes network request 13 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Drops startup file 2 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).

  • Script User-Agent 12 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\Tax Returns of R58,765.js"
    1⤵
    • Checks computer location settings
    • Drops startup file
    • Suspicious use of WriteProcessMemory
    PID:2332
    • C:\Windows\System32\wscript.exe
      "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\Tax Returns of R58,765.js"
      2⤵
      • Blocklisted process makes network request
      • Drops startup file
      PID:3380

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Tax Returns of R58,765.js
    Filesize

    1.0MB

    MD5

    33300fb747c6677625aa17d03e1010f3

    SHA1

    b1bea456907b59a8182a0f01cc0e90f6e32e2779

    SHA256

    cbe7d5663fd5359a72f88e44d083703d9625235929c31e0f5b16a0b42cb44d35

    SHA512

    3c7af332da0a394354b0f3245a7677149ea63bdb5e6b5fcbd7fe984d338c1cecb7e299e127859c1dafc4bf199d3d8c3923d2c32213ab292ccc7aa42558b65764

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  • C:\Users\Admin\AppData\Roaming\Tax Returns of R58,765.js
    Filesize

    1.0MB

    MD5

    33300fb747c6677625aa17d03e1010f3

    SHA1

    b1bea456907b59a8182a0f01cc0e90f6e32e2779

    SHA256

    cbe7d5663fd5359a72f88e44d083703d9625235929c31e0f5b16a0b42cb44d35

    SHA512

    3c7af332da0a394354b0f3245a7677149ea63bdb5e6b5fcbd7fe984d338c1cecb7e299e127859c1dafc4bf199d3d8c3923d2c32213ab292ccc7aa42558b65764

    Download Submit