Nasreddine Bencherchali
44 lines
2.4 KiB
YAML
44 lines
2.4 KiB
YAML
title: CobaltStrike Named Pipe Pattern Regex
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id: 0e7163d4-9e19-4fa7-9be6-000c61aad77a
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status: test
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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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author: Florian Roth (Nextron Systems)
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date: 2021/07/30
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modified: 2022/12/31
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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). The basic configuration is in popular sysmon configuration (https://github.com/SwiftOnSecurity/sysmon-config), but it is worth verifying. You can also use other repo, e.g. https://github.com/Neo23x0/sysmon-config, https://github.com/olafhartong/sysmon-modular You can also use other repo, e.g. https://github.com/Neo23x0/sysmon-config, https://github.com/olafhartong/sysmon-modular. How to test detection? You can always use Cobalt Strike, but also you can check powershell script from this site https://svch0st.medium.com/guide-to-named-pipes-and-hunting-for-cobalt-strike-pipes-dc46b2c5f575'
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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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