CobaltStrike Named Pipe Pattern Regex

 Original Source: [Sigma source]
Title: CobaltStrike Named Pipe Pattern Regex
Status: test
Description:Detects the creation of a named pipe matching a pattern used by CobaltStrike Malleable C2 profiles
References:
  -https://svch0st.medium.com/guide-to-named-pipes-and-hunting-for-cobalt-strike-pipes-dc46b2c5f575
  -https://gist.github.com/MHaggis/6c600e524045a6d49c35291a21e10752
Author: Florian Roth (Nextron Systems)
Date: 2021-07-30
modified:2026-06-18
Tags:
  • -'attack.privilege-escalation'
  • -'attack.stealth'
  • -'attack.t1055'
Logsource:
  • product: windows
  • category: pipe_created
  • 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
Detection:
  selection:
PipeName|re:'\\mojo\.5688\.8052\.(?:183894939787088877|35780273329370473)[0-9a-f]{2}' PipeName|re:'\\wkssvc_?[0-9a-f]{2}' PipeName|re:'\\ntsvcs[0-9a-f]{2}' PipeName|re:'\\DserNamePipe[0-9a-f]{2}' PipeName|re:'\\SearchTextHarvester[0-9a-f]{2}' PipeName|re:'\\mypipe-(?:f|h)[0-9a-f]{2}' PipeName|re:'\\windows\.update\.manager[0-9a-f]{2,3}' PipeName|re:'\\ntsvcs_[0-9a-f]{2}' PipeName|re:'\\scerpc_?[0-9a-f]{2}' PipeName|re:'\\PGMessagePipe[0-9a-f]{2}' PipeName|re:'\\MsFteWds[0-9a-f]{2}' PipeName|re:'\\f4c3[0-9a-f]{2}' PipeName|re:'\\fullduplex_[0-9a-f]{2}' PipeName|re:'\\msrpc_[0-9a-f]{4}' PipeName|re:'\\win\\msrpc_[0-9a-f]{2}' PipeName|re:'\\f53f[0-9a-f]{2}$' PipeName|re:'\\rpc_[0-9a-f]{2}' PipeName|re:'\\spoolss_[0-9a-f]{2}' PipeName|re:'\\Winsock2\\CatalogChangeListener-[0-9a-f]{3}-0,'   condition:selection
Falsepositives:
  -Unknown
Level: critical