huntrule

Windows Named Pipe Creation Matching EfsPotato-Style \\pipe\\srvsvc

Alerts on Windows named pipe creation events matching an EfsPotato-style PipeName pattern (\pipe\ and \pipe\srvsvc), excluding common benign contexts.

FreeReviewedSigma · High · v2
Product
windows
Category
pipe_created
Author
Florian Roth (Nextron Systems) (SigmaHQ), DRL 1.1
Published
2021-08-23
Updated
2026-07-31
AnalysisDetection

ATT&CK techniques

Priv Esc → Defense Evasion

  1. Recon

  2. Resource Dev

  3. Initial Access

  4. Execution

  5. Persistence

  6. Priv Esc

  7. Defense Evasion

  8. Cred Access

  9. Discovery

  10. Lateral Movement

  11. Collection

  12. C2

  13. Exfiltration

  14. Impact

What it detects

This rule flags Windows named pipe creation events where the PipeName contains generic named-pipe paths (\\pipe\\) and the specific marker \\pipe\\srvsvc, while excluding certain context-share and other default pipe prefixes to reduce noise. Attack tools may use named pipes for stealthy local communication or to support privileged operations, making this pattern useful for spotting suspicious IPC setup. It relies on telemetry that records named pipe creation with a PipeName field (e.g., Sysmon named pipe events).

Reporting behind it

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Suspicious CRAT Injection Named Pipe ChromeUpdatePipe (via pipe_created)
AsyncRAT Injector libPK.dll Written to Public Folder (via file_event)
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Windows Named Pipe Creation Matching EfsPotato-Style \\pipe\\srvsvc
Pivot detection · T1055 · 9 related

Changelog

v2
  1. v2
    Candidate ingested via manual entry.2026-07-31
  2. v1
    No changelog recorded for this version.2026-07-30

Detection content is published as a reviewed draft. Tune thresholds and exclusions against your own telemetry before enabling this rule for alerting.