Invoke-Obfuscation Via Use MSHTA - PowerShell Module

Description

Detects Obfuscated Powershell via use MSHTA in Scripts

Query · sigma

selection:
  Payload|contains|all:
  - set
  - '&&'
  - mshta
  - vbscript:createobject
  - .run
  - (window.close)
condition: selection

Known false positives

  • Unknown
Raw source Invoke-Obfuscation Via Use MSHTA - PowerShell Module · Sigma
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Published by SigmaHQ/sigma ↗, licensed under Detection Rule License 1.1 ↗. Reproduced here unmodified. 
title: Invoke-Obfuscation Via Use MSHTA - PowerShell Module
id: 07ad2ea8-6a55-4ac6-bf3e-91b8e59676eb
related:
    - id: e55a5195-4724-480e-a77e-3ebe64bd3759
      type: derived
status: test
description: Detects Obfuscated Powershell via use MSHTA in Scripts
references:
    - https://github.com/SigmaHQ/sigma/issues/1009 # (Task31)
author: Nikita Nazarov, oscd.community
date: 2020-10-08
modified: 2023-01-04
tags:
    - attack.stealth
    - attack.t1027
    - attack.execution
    - attack.t1059.001
logsource:
    product: windows
    category: ps_module
    definition: 0ad03ef1-f21b-4a79-8ce8-e6900c54b65b
detection:
    selection:
        Payload|contains|all:
            - 'set'
            - '&&'
            - 'mshta'
            - 'vbscript:createobject'
            - '.run'
            - '(window.close)'
    condition: selection
falsepositives:
    - Unknown
level: high

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