Malicious ShellIntel PowerShell Commandlets

Detects Commandlet names from ShellIntel exploitation scripts.

Sigma rule (View on GitHub)

 1title: Malicious ShellIntel PowerShell Commandlets
 2id: 402e1e1d-ad59-47b6-bf80-1ee44985b3a7
 3status: test
 4description: Detects Commandlet names from ShellIntel exploitation scripts.
 5references:
 6    - https://github.com/Shellntel/scripts/
 7author: Max Altgelt (Nextron Systems), Tobias Michalski (Nextron Systems)
 8date: 2021-08-09
 9modified: 2023-01-02
10tags:
11    - attack.execution
12    - attack.t1059.001
13logsource:
14    product: windows
15    category: ps_script
16    definition: 'Requirements: Script Block Logging must be enabled'
17detection:
18    selection:
19        ScriptBlockText|contains:
20            - 'Invoke-SMBAutoBrute'
21            - 'Invoke-GPOLinks'
22            # - 'Out-Minidump' # Covered in 89819aa4-bbd6-46bc-88ec-c7f7fe30efa6
23            - 'Invoke-Potato'
24    condition: selection
25falsepositives:
26    - Unknown
27level: high

References

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