Detection rules › Sigma
PowerShell Downgrade Attack - PowerShell
Detects PowerShell downgrade attack by comparing the host versions with the actually used engine version 2.0
MITRE ATT&CK coverage
| Tactic | Techniques |
|---|---|
| Execution | T1059.001 Command and Scripting Interpreter: PowerShell |
Event coverage
| Provider | Event ID | Title |
|---|---|---|
| PowerShell | 400 |
Stages and Predicates
Stage 1: selection
Data|contains: 'EngineVersion=2.'
Stage 2: not filter_main
Data|contains: 'HostVersion=2.'
Indicators
Each row is a field, operator, and value that the rule matches. The corpus column counts how many other rules in the catalog look for the same combination: high numbers point to widely-used, community-vetted indicators. Blank or 1 shows that the indicator is specific to this rule.
| Field | Kind | Values |
|---|---|---|
Data | match |
|