Possible PetitPotam Coercion via IPC$ Named Pipe Access (via security)

ATT&CK techniques

Cred Access → Collection

Recon
Resource Dev
Initial Access
Execution
Persistence
Priv Esc
Defense Evasion
Cred Access
- T1187Forced Authentication
- T1557.001Name Resolution Poisoning and SMB Relay
Discovery
Lateral Movement
Collection
- T1557.001Name Resolution Poisoning and SMB Relay
C2
Exfiltration
Impact

What it detects

This rule detects network share access in Event ID 5145 to the IPC$ share targeting sensitive RPC named pipes such as efsrpc and lsarpc used to coerce authentication. PetitPotam abuses the EFS RPC interface to force a host to authenticate to an attacker for NTLM relay. Coerced authentication relayed to ADCS or other services enables privilege escalation and domain takeover.

Reporting behind it

Related detections9 linkedT1187 — drag to rearrange

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Possible PetitPotam Coercion via IPC$ Named Pipe Access (via security)

Pivot detection · T1187 · 9 related

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

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