Nasreddine Bencherchali
38 lines
1.3 KiB
YAML
38 lines
1.3 KiB
YAML
title: Process Creation Using Sysnative Folder
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id: 3c1b5fb0-c72f-45ba-abd1-4d4c353144ab
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status: test
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description: Detects process creation events that use the Sysnative folder (common for CobaltStrike spawns)
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references:
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- https://thedfirreport.com/2021/08/29/cobalt-strike-a-defenders-guide/
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author: Max Altgelt (Nextron Systems)
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date: 2022-08-23
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modified: 2025-10-08
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tags:
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- attack.privilege-escalation
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- attack.stealth
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- attack.t1055
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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:
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- CommandLine|contains: ':\Windows\Sysnative\'
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- Image|contains: ':\Windows\Sysnative\'
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filter_main_ngen:
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Image|contains:
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- 'C:\Windows\Microsoft.NET\Framework64\v'
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- 'C:\Windows\Microsoft.NET\Framework\v'
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- 'C:\Windows\Microsoft.NET\FrameworkArm\v'
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- 'C:\Windows\Microsoft.NET\FrameworkArm64\v'
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Image|endswith: '\ngen.exe'
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CommandLine|contains: 'install'
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filter_optional_xampp:
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CommandLine|contains|all:
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- '"C:\Windows\sysnative\cmd.exe"'
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- '\xampp\'
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- '\catalina_start.bat'
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condition: selection and not 1 of filter_main_* and not 1 of filter_optional_*
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falsepositives:
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- Unknown
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level: medium
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