itiB
36 lines
819 B
YAML
36 lines
819 B
YAML
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title: Suspicious Cobalt Strike DNS Beaconing
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ruletype: Sigma
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author: Florian Roth
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date: 2021/11/09
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description: Detects a program that invoked suspicious DNS queries known from Cobalt
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Strike beacons
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detection:
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SELECTION_1:
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EventID: 22
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SELECTION_2:
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QueryName:
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- aaa.stage.*
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- post.1*
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SELECTION_3:
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QueryName: '*.stage.123456.*'
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condition: (SELECTION_1 and (SELECTION_2 or SELECTION_3))
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falsepositives:
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- Unknown
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fields:
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- Image
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- CommandLine
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id: f356a9c4-effd-4608-bbf8-408afd5cd006
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level: critical
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logsource:
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category: dns_query
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product: windows
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references:
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- https://www.icebrg.io/blog/footprints-of-fin7-tracking-actor-patterns
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- https://www.sekoia.io/en/hunting-and-detecting-cobalt-strike/
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status: experimental
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tags:
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- attack.command_and_control
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- attack.t1071
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- attack.t1071.004
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