First Time Seen Remote Named Pipe

Severity: high
Author: Samir Bousseaden
Source: upstream

This detection excludes known namped pipes accessible remotely and notify on newly observed ones, may help to detect lateral movement and remote exec using named pipes

MITRE ATT&CK coverage

Tactic	Techniques
Lateral Movement	`T1021.002` Remote Services: SMB/Windows Admin Shares

Event coverage

Provider	Event ID	Title
Security-Auditing	5145	A network share object was checked to see whether client can be granted desired access.

Stages and Predicates

Stage 1: `selection1`

ShareName: '\\\\\*\\IPC$'

Stage 2: `not false_positives`

RelativeTargetName: [HydraLsPipe, LSM_API_service, MsFteWds, TermSrv_API_service, atsvc, browser, eventlog, lsarpc, lsass, netdfs, netlogon, ntsvcs, protected_storage, samr, spoolss, 'sql\query', srvsvc, svcctl, winreg, wkssvc]

Indicators

Each row is a field, operator, and value that the rule matches. The corpus column counts how many other rules in the catalog look for the same combination: high numbers point to widely-used, community-vetted indicators. Blank or 1 shows that the indicator is specific to this rule.

Field	Kind	Values
`RelativeTargetName`	eq	`HydraLsPipe` `LSM_API_service` `MsFteWds` `TermSrv_API_service` `atsvc` corpus 2 (sigma 2) `browser` `eventlog` `lsarpc` corpus 3 (sigma 2, splunk 1) `lsass` `netdfs` `netlogon` `ntsvcs` `protected_storage` corpus 2 (sigma 2) `samr` `spoolss` corpus 2 (sigma 2) `sql\query` `srvsvc` `svcctl` corpus 2 (sigma 2) `winreg` `wkssvc`
`ShareName`	eq	`\\\\\*\\IPC$` corpus 6 (sigma 6)

Neighbors

Stricter alternatives (narrower than this rule)

The rules below may be useful if you find the current rule is too noisy / lacks specificity.

Remote Task Creation via ATSVC Named Pipe [sigma] (adds 2 filters) (first-stage match only; downstream stages may differ)
Remote Service Activity via SVCCTL Named Pipe [sigma] (adds 2 filters) (first-stage match only; downstream stages may differ)
DCERPC SMB Spoolss Named Pipe [sigma] (adds 1 filter) (first-stage match only; downstream stages may differ)
Impacket PsExec Execution [sigma] (adds 1 filter) (first-stage match only; downstream stages may differ)
Suspicious PsExec Execution [sigma] (adds 1 filter) (first-stage match only; downstream stages may differ)

Broader alternatives (more inclusive than this rule)

These rules match a superset of what this rule catches. They cover the same events plus more. Use them if you want wider coverage and can absorb more false positives.

Transferring Files with Credential Data via Network Shares [sigma] (drops 1 filter this rule applies) (first-stage match only; downstream stages may differ)