Potential Remote Desktop Tunneling Detected

Identifies 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.

Rule type: eql

Rule indices:

logs-endpoint.events.*
winlogbeat-*
logs-windows.*

Severity: high

Risk score: 73

Runs every: 5m

Searches indices from: now-9m (Date Math format, see also Additional look-back time)

Maximum alerts per execution: 100

References:

https://blog.netspi.com/how-to-access-rdp-over-a-reverse-ssh-tunnel/

Tags:

Elastic
Host
Windows
Threat Detection
Command and Control

Version: 4

Rule authors:

Elastic

Rule license: Elastic License v2

Rule query

edit

process where event.type in ("start", "process_started") and
  /* RDP port and usual SSH tunneling related switches in command line */
  process.args : "*:3389" and
  process.args : ("-L", "-P", "-R", "-pw", "-ssh")

Framework: MITRE ATT&CK^TM

Tactic:
- Name: Command and Control
- ID: TA0011
- Reference URL: https://attack.mitre.org/tactics/TA0011/
Technique:
- Name: Protocol Tunneling
- ID: T1572
- Reference URL: https://attack.mitre.org/techniques/T1572/

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