Remote PowerShell Sessions Network Connections (WinRM) — Sigma Rule

Rule metadata and linked tags

Author: Roberto Rodriguez @Cyb3rWard0g. Source status: test; severity: high. Source dates: 2019-09-12 / 2022-10-09.

{
  "product": "windows",
  "service": "security"
}

Pinned original Sigma rule · Detection Rule License 1.1

Source SHA-256: 1e07361d6690bba2ec165781fc8218329e834dfc5738467c18a5ce9c5dc8a59c

Detection logic

Original source YAML. Source-tag agreement is not proof of complete semantic coverage. This rule has not been compiled for a SIEM backend or validated against live telemetry here.

title: Remote PowerShell Sessions Network Connections (WinRM)
id: 13acf386-b8c6-4fe0-9a6e-c4756b974698
status: test
description: Detects basic PowerShell Remoting (WinRM) by monitoring for network inbound connections to ports 5985 OR 5986
references:
    - https://threathunterplaybook.com/hunts/windows/190511-RemotePwshExecution/notebook.html
author: Roberto Rodriguez @Cyb3rWard0g
date: 2019-09-12
modified: 2022-10-09
tags:
    - attack.execution
    - attack.t1059.001
logsource:
    product: windows
    service: security
detection:
    selection:
        EventID: 5156
        DestPort:
            - 5985
            - 5986
        LayerRTID: 44
    condition: selection
falsepositives:
    - Legitimate use of remote PowerShell execution
level: high

Original YAML and metadata in JSON

False positives

• Legitimate use of remote PowerShell execution

Source references

• https://threathunterplaybook.com/hunts/windows/190511-RemotePwshExecution/notebook.html