Nasreddine Bencherchali
52 lines
1.5 KiB
YAML
52 lines
1.5 KiB
YAML
title: PUA - NSudo Execution
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id: 771d1eb5-9587-4568-95fb-9ec44153a012
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status: experimental
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description: Detects the use of NSudo tool for command execution
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references:
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- https://nsudo.m2team.org/en-us/
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- https://www.winhelponline.com/blog/run-program-as-system-localsystem-account-windows/
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author: Florian Roth (Nextron Systems), Nasreddine Bencherchali
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date: 2022/01/24
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modified: 2023/02/13
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tags:
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- attack.execution
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- attack.t1569.002
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- attack.s0029
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logsource:
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category: process_creation
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product: windows
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detection:
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selection_img:
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- Image|endswith:
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- '\NSudo.exe'
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- '\NSudoLC.exe'
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- '\NSudoLG.exe'
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- OriginalFileName:
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- 'NSudo.exe'
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- 'NSudoLC.exe'
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- 'NSudoLG.exe'
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selection_cli:
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CommandLine|contains:
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# Covers Single/Double dash "-"/"--" + ":"
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- '-U:S ' # System
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- '-U:T ' # Trusted Installer
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- '-U:E ' # Elevated
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- '-P:E ' # Enable All Privileges
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- '-M:S ' # System Integrity
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- '-M:H ' # High Integrity
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# Covers Single/Double dash "-"/"--" + "="
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- '-U=S '
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- '-U=T '
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- '-U=E '
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- '-P=E '
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- '-M=S '
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- '-M=H '
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- '-ShowWindowMode:Hide'
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condition: all of selection*
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fields:
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- CommandLine
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- ParentCommandLine
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falsepositives:
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- Legitimate use by administrators
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level: high
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