Invoke-Obfuscation Via Use MSHTA - PowerShell

Title: Invoke-Obfuscation Via Use MSHTA - PowerShell
Status: test
Description:Detects Obfuscated Powershell via use MSHTA in Scripts
References:
  -https://github.com/SigmaHQ/sigma/issues/1009
Author: Nikita Nazarov, oscd.community
Date: 2020-10-08
modified:2022-11-29
Tags:

• -'attack.stealth'
• -'attack.t1027'
• -'attack.execution'
• -'attack.t1059.001'

Logsource:

• product: windows
• category: ps_script
• definition: Requirements: Script Block Logging must be enabled

Detection:
  selection_4104:
    ScriptBlockText|contains|all:
      -'set'
      -'&&'
      -'mshta'
      -'vbscript:createobject'
      -'.run'
      -'(window.close)'

  condition:selection_4104
Falsepositives:
  -Unknown
Level: high