Detection rules › Sigma
Suspicious PowerShell Download - PoshModule
Detects suspicious PowerShell download command
MITRE ATT&CK coverage
| Tactic | Techniques |
|---|---|
| Execution | T1059.001 Command and Scripting Interpreter: PowerShell |
Event coverage
| Provider | Event ID | Title |
|---|---|---|
| PowerShell | 4103 | Payload Context: ContextInfo User Data: UserData. |
Stages and Predicates
Stage 1: all of selection_webclient_
ContextInfo|contains: System.Net.WebClient
Stage 2: all of selection_function
or:
ContextInfo|contains: '.DownloadFile('
ContextInfo|contains: '.DownloadString('
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 |
|---|---|---|
ContextInfo | match |
|