Potential SystemNightmare Exploitation Attempt

Detects an exploitation attempt of SystemNightmare in order to obtain a shell as LOCAL_SYSTEM

Detection logic

selection

CommandLine|contains:
  - printnightmare.gentilkiwi.com
  - " /user:gentilguest "
  - Kiwi Legit Printer

Condition

selection

Raw YAML

title: Potential SystemNightmare Exploitation Attempt
id: c01f7bd6-0c1d-47aa-9c61-187b91273a16
status: test
description: Detects an exploitation attempt of SystemNightmare in order to obtain a shell as LOCAL_SYSTEM
references:
    - https://github.com/GossiTheDog/SystemNightmare
author: Florian Roth (Nextron Systems)
date: 2021-08-11
modified: 2023-02-04
tags:
    - attack.privilege-escalation
    - attack.t1068
    - detection.emerging-threats
logsource:
    category: process_creation
    product: windows
detection:
    selection:
        CommandLine|contains:
            - 'printnightmare.gentilkiwi.com'
            - ' /user:gentilguest '
            - 'Kiwi Legit Printer'
    condition: selection
falsepositives:
    - Unknown
level: critical