Detectionmediumtest
Potential PowerShell Downgrade Attack
Detects PowerShell downgrade attack by comparing the host versions with the actually used engine version 2.0
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Log Source
WindowsProcess Creation
ProductWindows← raw: windows
CategoryProcess Creation← raw: process_creation
Events generated when a new process is spawned on the system. Covers command-line arguments, parent/child relationships, and process metadata.
Detection Logic
Detection Logic1 selector
detection:
selection:
Image|endswith: '\powershell.exe'
CommandLine|contains:
- ' -version 2 '
- ' -versio 2 '
- ' -versi 2 '
- ' -vers 2 '
- ' -ver 2 '
- ' -ve 2 '
- ' -v 2 '
condition: selectionFalse Positives
Unknown
False positive likelihood has not been assessed. Additional context may be needed during triage.
MITRE ATT&CK
Sub-techniques
Rule Metadata
Rule ID
b3512211-c67e-4707-bedc-66efc7848863
Status
test
Level
medium
Type
Detection
Created
Fri Mar 20
Modified
Wed Jan 04
Author
Path
rules/windows/process_creation/proc_creation_win_powershell_downgrade_attack.yml
Raw Tags
attack.defense-evasionattack.executionattack.t1059.001