Suspicious Driver Install by pnputil.exe

Detects when a possible suspicious driver is being installed via pnputil.exe lolbin

Sigma rule (View on GitHub)

 1title: Suspicious Driver Install by pnputil.exe
 2id: a2ea3ae7-d3d0-40a0-a55c-25a45c87cac1
 3status: test
 4description: Detects when a possible suspicious driver is being installed via pnputil.exe lolbin
 5references:
 6    - https://learn.microsoft.com/en-us/windows-hardware/drivers/devtest/pnputil-command-syntax
 7    - https://strontic.github.io/xcyclopedia/library/pnputil.exe-60EDC5E6BDBAEE441F2E3AEACD0340D2.html
 8author: Hai Vaknin @LuxNoBulIshit, Avihay eldad  @aloneliassaf, Austin Songer @austinsonger
 9date: 2021/09/30
10modified: 2022/10/09
11tags:
12    - attack.persistence
13    - attack.t1547
14logsource:
15    category: process_creation
16    product: windows
17detection:
18    selection:
19        CommandLine|contains:
20            - '-i'
21            - '/install'
22            - '-a'
23            - '/add-driver'
24            - '.inf'
25        Image|endswith: '\pnputil.exe'
26    condition: selection
27fields:
28    - ComputerName
29    - User
30    - CommandLine
31    - ParentCommandLine
32falsepositives:
33    - Pnputil.exe being used may be performed by a system administrator.
34    - Verify whether the user identity, user agent, and/or hostname should be making changes in your environment.
35    - Pnputil.exe being executed from unfamiliar users should be investigated. If known behavior is causing false positives, it can be exempted from the rule.
36level: medium

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