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
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230915-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230915-enlocale:en-usos:windows10-2004-x64system
  • submitted
    28-09-2023 09:33

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General

  • Target

    Tax Returns Of R48,765.js

  • Size

    1019KB

  • MD5

    e8536fd0f118843f3a18ec4e10831f9e

  • SHA1

    873a031c63b540b238aa8ff30d09c08b0f6c3811

  • SHA256

    08d17101c7bb382a1dc5232be50250baa228e81f56adc40a1a94c574a986c25f

  • SHA512

    a50ea7d4dd18b1f0e3614d1544736d445bbea0e44a92a6903ec86c2d06c31d05f3ce5c8cf8d5eb5de87a6ae7710327263cca845f642665cd87f13ca3e74690e5

  • SSDEEP

    6144:MQA7NcHC1yd9hSFIpgRK8VO6CbKZk+rIavG7UjcBfd82TwXtQlTrZ889unEYpcYK:X/

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 11 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 10 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 R48,765.js"
    1⤵
    • Checks computer location settings
    • Drops startup file
    • Suspicious use of WriteProcessMemory
    PID:1032
    • C:\Windows\System32\wscript.exe
      "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\Tax Returns Of R48,765.js"
      2⤵
      • Blocklisted process makes network request
      • Drops startup file
      PID:4804

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Tax Returns Of R48,765.js
    Filesize

    1019KB

    MD5

    e8536fd0f118843f3a18ec4e10831f9e

    SHA1

    873a031c63b540b238aa8ff30d09c08b0f6c3811

    SHA256

    08d17101c7bb382a1dc5232be50250baa228e81f56adc40a1a94c574a986c25f

    SHA512

    a50ea7d4dd18b1f0e3614d1544736d445bbea0e44a92a6903ec86c2d06c31d05f3ce5c8cf8d5eb5de87a6ae7710327263cca845f642665cd87f13ca3e74690e5

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  • C:\Users\Admin\AppData\Roaming\Tax Returns Of R48,765.js
    Filesize

    1019KB

    MD5

    e8536fd0f118843f3a18ec4e10831f9e

    SHA1

    873a031c63b540b238aa8ff30d09c08b0f6c3811

    SHA256

    08d17101c7bb382a1dc5232be50250baa228e81f56adc40a1a94c574a986c25f

    SHA512

    a50ea7d4dd18b1f0e3614d1544736d445bbea0e44a92a6903ec86c2d06c31d05f3ce5c8cf8d5eb5de87a6ae7710327263cca845f642665cd87f13ca3e74690e5

    Download Submit