Detection rules › Sigma
Potential Remote Desktop Tunneling
Detects potential use of an SSH utility to establish RDP over a reverse SSH Tunnel. This can be used by attackers to enable routing of network packets that would otherwise not reach their intended destination.
MITRE ATT&CK coverage
| Tactic | Techniques |
|---|---|
| Lateral Movement |
Telemetry coverage
| Provider | Record / event type |
|---|---|
| Sysmon | Event ID 1: Process creation |
| Security-Auditing | Event ID 4688: A new process has been created. |
Rule body
title: Potential Remote Desktop Tunneling
id: 8a3038e8-9c9d-46f8-b184-66234a160f6f
status: test
description: Detects potential use of an SSH utility to establish RDP over a reverse SSH Tunnel. This can be used by attackers to enable routing of network packets that would otherwise not reach their intended destination.
references:
- https://www.elastic.co/guide/en/security/current/potential-remote-desktop-tunneling-detected.html
author: Tim Rauch, Elastic (idea)
date: 2022-09-27
tags:
- attack.lateral-movement
- attack.t1021
logsource:
category: process_creation
product: windows
detection:
selection:
CommandLine|contains: ':3389' # RDP port and usual SSH tunneling related switches in command line
selection_opt:
CommandLine|contains:
- ' -L '
- ' -P '
- ' -R '
- ' -pw '
- ' -ssh '
condition: all of selection*
falsepositives:
- Unknown
level: medium
Stages and Predicates
Stage 0: condition
all of selection*Stage 1: selection
selection:
CommandLine|contains: ':3389'
Stage 2: selection_opt
selection_opt:
CommandLine|contains:
- ' -L '
- ' -P '
- ' -R '
- ' -pw '
- ' -ssh '
Indicators
These rows show field, operator, and value matches.
| Field | Kind | Values | Search |
|---|---|---|---|
CommandLine | match |
| field:"CommandLine" kind:match |