UtilityFunctions.ps1 Proxy Dll

calendar Aug 12, 2024 · attack.defense-evasion attack.t1216  ·
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Detects the use of a Microsoft signed script executing a managed DLL with PowerShell.

Sigma rule (View on GitHub)

 1title: UtilityFunctions.ps1 Proxy Dll
 2id: 0403d67d-6227-4ea8-8145-4e72db7da120
 3status: test
 4description: Detects the use of a Microsoft signed script executing a managed DLL with PowerShell.
 5references:
 6    - https://lolbas-project.github.io/lolbas/Scripts/UtilityFunctions/
 7author: frack113
 8date: 2022-05-28
 9tags:
10    - attack.defense-evasion
11    - attack.t1216
12logsource:
13    category: process_creation
14    product: windows
15detection:
16    selection:
17        CommandLine|contains:
18            - 'UtilityFunctions.ps1'
19            - 'RegSnapin '
20    condition: selection
21falsepositives:
22    - Unknown
23level: medium

References

  • Utilityfunctions on LOLBAS

    UtilityFunctions.ps1 is a living-of-the-land file containing unexpected functionality that can be abused by attackers; this page lists all its use cases.


    Read More

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