Thomas Patzke
143744bc12
* Backslashes in regular expressions * Casing of condition operators * Further small errors
44 lines
2.1 KiB
YAML
44 lines
2.1 KiB
YAML
title: CobaltStrike Named Pipe Pattern Regex
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id: 0e7163d4-9e19-4fa7-9be6-000c61aad77a
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status: experimental
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description: Detects the creation of a named pipe matching a pattern used by CobaltStrike Malleable C2 profiles
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references:
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- https://svch0st.medium.com/guide-to-named-pipes-and-hunting-for-cobalt-strike-pipes-dc46b2c5f575
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- https://gist.github.com/MHaggis/6c600e524045a6d49c35291a21e10752
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date: 2021/07/30
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modified: 2021/09/02
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author: Florian Roth
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tags:
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- attack.defense_evasion
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- attack.privilege_escalation
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- attack.t1055
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logsource:
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product: windows
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category: pipe_created
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definition: 'Note that you have to configure logging for Named Pipe Events in Sysmon config (Event ID 17 and Event ID 18). In the current popular sysmon configuration (https://github.com/SwiftOnSecurity/sysmon-config) this is not there, you have to add it yourself or use this extended version that logs the Named Pipes used in this Sigma repo (https://github.com/Neo23x0/sysmon-config)'
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detection:
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selection:
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- PipeName|re: '\\\\mojo\.5688\.8052\.(?:183894939787088877|35780273329370473)[0-9a-f]{2}'
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- PipeName|re: '\\\\wkssvc_?[0-9a-f]{2}'
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- PipeName|re: '\\\\ntsvcs[0-9a-f]{2}'
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- PipeName|re: '\\\\DserNamePipe[0-9a-f]{2}'
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- PipeName|re: '\\\\SearchTextHarvester[0-9a-f]{2}'
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- PipeName|re: '\\\\mypipe\-(?:f|h)[0-9a-f]{2}'
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- PipeName|re: '\\\\windows\.update\.manager[0-9a-f]{2,3}'
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- PipeName|re: '\\\\ntsvcs_[0-9a-f]{2}'
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- PipeName|re: '\\\\scerpc_?[0-9a-f]{2}'
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- PipeName|re: '\\\\PGMessagePipe[0-9a-f]{2}'
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- PipeName|re: '\\\\MsFteWds[0-9a-f]{2}'
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- PipeName|re: '\\\\f4c3[0-9a-f]{2}'
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- PipeName|re: '\\\\fullduplex_[0-9a-f]{2}'
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- PipeName|re: '\\\\msrpc_[0-9a-f]{4}'
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- PipeName|re: '\\\\win\\\\msrpc_[0-9a-f]{2}'
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- PipeName|re: '\\\\f53f[0-9a-f]{2}'
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- PipeName|re: '\\\\rpc_[0-9a-f]{2}'
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- PipeName|re: '\\\\spoolss_[0-9a-f]{2}'
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- PipeName|re: '\\\\Winsock2\\\\CatalogChangeListener-[0-9a-f]{3}-0,'
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condition: selection
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falsepositives:
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- Unknown
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level: critical
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