IMPORTANT: No additional bug fixes or documentation updates will be released for this version. For the latest information, see the current release documentation.

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Port Forwarding Rule Addition

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Port Forwarding Rule Addition

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Identifies the creation of a new port forwarding rule. An adversary may abuse this technique to bypass network segmentation restrictions.

Rule type: eql

Rule indices:

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

Severity: medium

Risk score: 47

Runs every: 5 minutes

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

Maximum alerts per execution: 100

References:

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

Tags:

Elastic
Host
Windows
Threat Detection
Defense Evasion

Version: 3 (version history)

Added (Elastic Stack release): 7.11.0

Last modified (Elastic Stack release): 7.12.0

Rule authors: Elastic

Rule license: Elastic License v2

Rule query

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registry where registry.path :
"HKLM\\SYSTEM\\ControlSet*\\Services\\PortProxy\\v4tov4\\*"

Threat mapping

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Framework: MITRE ATT&CK^TM

Tactic:
- Name: Defense Evasion
- ID: TA0005
- Reference URL: https://attack.mitre.org/tactics/TA0005/
Technique:
- Name: Impair Defenses
- ID: T1562
- Reference URL: https://attack.mitre.org/techniques/T1562/

Rule version history

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Version 3 (7.12.0 release)

Formatting only

Version 2 (7.11.2 release)

Formatting only

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