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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

T1021
lateral-movement

Detection Query

selection:
  CommandLine|contains: :3389
selection_opt:
  CommandLine|contains:
    - " -L "
    - " -P "
    - " -R "
    - " -pw "
    - " -ssh "
condition: all of selection*

Author

Tim Rauch, Elastic (idea)

Created

2022-09-27

Data Sources

windowsProcess Creation Events

Platforms

windows

References

Tags

attack.lateral-movementattack.t1021
Raw Content
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