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31 lines
1.0 KiB
YAML
31 lines
1.0 KiB
YAML
title: Reconnaissance Activity
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status: experimental
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description: 'Detects activity as "net user administrator /domain" and "net group domain admins /domain"'
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references:
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- https://findingbad.blogspot.de/2017/01/hunting-what-does-it-look-like.html
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author: Florian Roth (rule), Jack Croock (method)
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tags:
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- attack.discovery
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- attack.t1087
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- attack.t1069
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- attack.s0039
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logsource:
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product: windows
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service: security
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definition: The volume of Event ID 4661 is high on Domain Controllers and therefore "Audit SAM" and "Audit Kernel Object" advanced audit policy settings are not configured in the recommendations for server systems
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detection:
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selection:
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- EventID: 4661
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ObjectType: 'SAM_USER'
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ObjectName: 'S-1-5-21-*-500'
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AccessMask: '0x2d'
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- EventID: 4661
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ObjectType: 'SAM_GROUP'
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ObjectName: 'S-1-5-21-*-512'
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AccessMask: '0x2d'
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condition: selection
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falsepositives:
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- Administrator activity
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- Penetration tests
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level: high
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