Detection rules › Sigma
Potential DLL File Download Via PowerShell Invoke-WebRequest
Detects potential DLL files being downloaded using the PowerShell Invoke-WebRequest or Invoke-RestMethod cmdlets.
MITRE ATT&CK coverage
| Tactic | Techniques |
|---|---|
| Execution | T1059.001 Command and Scripting Interpreter: PowerShell |
| Command & Control | T1105 Ingress Tool Transfer |
Event coverage
| Provider | Event ID | Title |
|---|---|---|
| Sysmon | 1 | Process creation |
| Security-Auditing | 4688 | A new process has been created. |
Stages and Predicates
Stage 1: selection
or:
CommandLine|contains: 'IRM '
CommandLine|contains: 'IWR '
CommandLine|contains: 'Invoke-RestMethod '
CommandLine|contains: 'Invoke-WebRequest '
CommandLine|contains: .dll
CommandLine|contains: OutFile
CommandLine|contains: http
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 |
|---|---|---|
CommandLine | match |
|