RDP Port Forwarding Rule Added Via Netsh.EXE — Sigma Rule

Rule metadata and linked tags

Author: Florian Roth (Nextron Systems), oscd.community. Source status: test; severity: high. Source dates: 2019-01-29 / 2023-02-13.

{
  "category": "process_creation",
  "product": "windows"
}

Pinned original Sigma rule · Detection Rule License 1.1

Source SHA-256: 82abf77a8f6724b51c95ef8bb43365d4394d8bb0c2750f026538273b270e7b19

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: RDP Port Forwarding Rule Added Via Netsh.EXE
id: 782d6f3e-4c5d-4b8c-92a3-1d05fed72e63
status: test
description: Detects the execution of netsh to configure a port forwarding of port 3389 (RDP) rule
references:
    - https://www.fireeye.com/blog/threat-research/2019/01/bypassing-network-restrictions-through-rdp-tunneling.html
author: Florian Roth (Nextron Systems), oscd.community
date: 2019-01-29
modified: 2023-02-13
tags:
    - attack.lateral-movement
    - attack.command-and-control
    - attack.t1090
logsource:
    category: process_creation
    product: windows
detection:
    selection_img:
        - Image|endswith: '\netsh.exe'
        - OriginalFileName: 'netsh.exe'
    selection_cli:
        CommandLine|contains|all:
            - ' i'
            - ' p'
            - '=3389'
            - ' c'
    condition: all of selection_*
falsepositives:
    - Legitimate administration activity
level: high

Original YAML and metadata in JSON

False positives

• Legitimate administration activity

Source references

• https://www.fireeye.com/blog/threat-research/2019/01/bypassing-network-restrictions-through-rdp-tunneling.html