Detection rules › Sigma
PowerShell Decompress Commands
A General detection for specific decompress commands in PowerShell logs. This could be an adversary decompressing files.
MITRE ATT&CK coverage
| Tactic | Techniques |
|---|---|
| Defense Evasion | T1140 Deobfuscate/Decode Files or Information |
Event coverage
| Provider | Event ID | Title |
|---|---|---|
| PowerShell | 4103 | Payload Context: ContextInfo User Data: UserData. |
Stages and Predicates
Stage 1: selection_4103
Payload|contains: Expand-Archive
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 |
|---|---|---|
Payload | match |
|