Invoke-Obfuscation Via Stdin - System

Title: Invoke-Obfuscation Via Stdin - System
Status: test
Description:Detects Obfuscated Powershell via Stdin in Scripts
References:
  -https://github.com/SigmaHQ/sigma/issues/1009
Author: Nikita Nazarov, oscd.community
Date: 2020-10-12
modified:2022-11-29
Tags:

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

Logsource:

• product: windows
• service: system

Detection:
  selection:
    Provider_Name: 'Service Control Manager'
    EventID: '7045'
    ImagePath|contains|all:
      -'set'
      -'&&'

    ImagePath|contains:
      -'environment'
      -'invoke'
      -'input'

  condition:selection
Falsepositives:
  -Unknown
Level: high