Potential SystemNightmare Exploitation Attempt

calendar Jun 20, 2023 · attack.privilege_escalation attack.t1068 detection.emerging_threats  ·
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Detects an exploitation attempt of SystemNightmare in order to obtain a shell as LOCAL_SYSTEM

Sigma rule (View on GitHub)

 1title: Potential SystemNightmare Exploitation Attempt
 2id: c01f7bd6-0c1d-47aa-9c61-187b91273a16
 3status: test
 4description: Detects an exploitation attempt of SystemNightmare in order to obtain a shell as LOCAL_SYSTEM
 5references:
 6    - https://github.com/GossiTheDog/SystemNightmare
 7author: Florian Roth (Nextron Systems)
 8date: 2021/08/11
 9modified: 2023/02/04
10tags:
11    - attack.privilege_escalation
12    - attack.t1068
13    - detection.emerging_threats
14logsource:
15    category: process_creation
16    product: windows
17detection:
18    selection:
19        CommandLine|contains:
20            - 'printnightmare.gentilkiwi.com'
21            - ' /user:gentilguest '
22            - 'Kiwi Legit Printer'
23    condition: selection
24falsepositives:
25    - Unknown
26level: critical

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