Potential MSTSC Shadowing Activity — Sigma Rule

Rule metadata and linked tags

Author: Florian Roth (Nextron Systems). Source status: test; severity: high. Source dates: 2020-01-24 / 2023-02-05.

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

Pinned original Sigma rule · Detection Rule License 1.1

Source SHA-256: 5ee428e9ecfb4a897249ad1a53d1b7cc23382cb71efa79cd57423e94613b416a

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: Potential MSTSC Shadowing Activity
id: 6ba5a05f-b095-4f0a-8654-b825f4f16334
status: test
description: Detects RDP session hijacking by using MSTSC shadowing
references:
    - https://twitter.com/kmkz_security/status/1220694202301976576
    - https://github.com/kmkz/Pentesting/blob/47592e5e160d3b86c2024f09ef04ceb87d204995/Post-Exploitation-Cheat-Sheet
author: Florian Roth (Nextron Systems)
date: 2020-01-24
modified: 2023-02-05
tags:
    - attack.lateral-movement
    - attack.t1563.002
logsource:
    category: process_creation
    product: windows
detection:
    selection:
        CommandLine|contains|all:
            - 'noconsentprompt'
            - 'shadow:'
    condition: selection
falsepositives:
    - Unknown
level: high

Original YAML and metadata in JSON

False positives

• Unknown

Source references

• https://twitter.com/kmkz_security/status/1220694202301976576
• https://github.com/kmkz/Pentesting/blob/47592e5e160d3b86c2024f09ef04ceb87d204995/Post-Exploitation-Cheat-Sheet