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
    150s
  • max time network
    148s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230221-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230221-enlocale:en-usos:windows10-2004-x64system
  • submitted
    18-04-2023 11:36

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Report Analysis Logs

General

  • Target

    Tax Returns Of R48,765.js

  • Size

    1018KB

  • MD5

    fcf6d37bdd93ae9930c6650c16d873db

  • SHA1

    86eed10bfbfdd7f5f91ce3f2cc81342e9d349d18

  • SHA256

    2c17399dcbac1772f3415387c3385d73aeb4ee3872bcd45c2b4ade63c35c5eef

  • SHA512

    66b456b91e8195918b32e89f4aecb66a66d858f007f64fcdae866a48c7b199e5e64a93feda8917aa730bb188e1ff63636563d1dfe7c97438b98b2f3a2cbfa962

  • SSDEEP

    6144:QQMrBMJwrxq9tec+fPE2Qfe7tcsOHRH+8ihlckYFv85dWVcwXLUM4e//7fJ3eYwa:TkeiM4SEq

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). Likely ransomware behaviour.

  • Script User-Agent 11 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:4612
    • 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:2244

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 R48,765.js
    Filesize

    1018KB

    MD5

    fcf6d37bdd93ae9930c6650c16d873db

    SHA1

    86eed10bfbfdd7f5f91ce3f2cc81342e9d349d18

    SHA256

    2c17399dcbac1772f3415387c3385d73aeb4ee3872bcd45c2b4ade63c35c5eef

    SHA512

    66b456b91e8195918b32e89f4aecb66a66d858f007f64fcdae866a48c7b199e5e64a93feda8917aa730bb188e1ff63636563d1dfe7c97438b98b2f3a2cbfa962

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

    1018KB

    MD5

    fcf6d37bdd93ae9930c6650c16d873db

    SHA1

    86eed10bfbfdd7f5f91ce3f2cc81342e9d349d18

    SHA256

    2c17399dcbac1772f3415387c3385d73aeb4ee3872bcd45c2b4ade63c35c5eef

    SHA512

    66b456b91e8195918b32e89f4aecb66a66d858f007f64fcdae866a48c7b199e5e64a93feda8917aa730bb188e1ff63636563d1dfe7c97438b98b2f3a2cbfa962

    Download Submit