Sigma Rule Library

First Time Seen Remote Named Pipe

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

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Detection logic

selection1

EventID: 5145
ShareName: \\\\\*\\IPC$

false_positives

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

Condition

selection1 and not false_positives

Raw YAML

title: First Time Seen Remote Named Pipe
id: 52d8b0c6-53d6-439a-9e41-52ad442ad9ad
status: test
description: 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
references:
    - https://twitter.com/menasec1/status/1104489274387451904
author: Samir Bousseaden
date: 2019-04-03
modified: 2023-03-14
tags:
    - attack.lateral-movement
    - attack.t1021.002
logsource:
    product: windows
    service: security
    definition: 'The advanced audit policy setting "Object Access > Audit Detailed File Share" must be configured for Success/Failure'
detection:
    selection1:
        EventID: 5145
        ShareName: '\\\\\*\\IPC$' # looking for the string \\*\IPC$
    false_positives:
        RelativeTargetName:
            - 'atsvc'
            - 'samr'
            - 'lsarpc'
            - 'lsass'
            - 'winreg'
            - 'netlogon'
            - 'srvsvc'
            - 'protected_storage'
            - 'wkssvc'
            - 'browser'
            - 'netdfs'
            - 'svcctl'
            - 'spoolss'
            - 'ntsvcs'
            - 'LSM_API_service'
            - 'HydraLsPipe'
            - 'TermSrv_API_service'
            - 'MsFteWds'
            - 'sql\query'
            - 'eventlog'
    condition: selection1 and not false_positives
falsepositives:
    - Update the excluded named pipe to filter out any newly observed legit named pipe
level: high

False positives

  • Update the excluded named pipe to filter out any newly observed legit named pipe

References

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