IMPORTANT: No additional bug fixes or documentation updates will be released for this version.
PPTP (Point to Point Tunneling Protocol) Activity
editPPTP (Point to Point Tunneling Protocol) Activity
editDetects events that may indicate use of a PPTP VPN connection. Some threat actors use these types of connections to tunnel their traffic while avoiding detection.
Rule type: query
Rule indices:
- filebeat-*
Severity: low
Risk score: 21
Runs every: 5 minutes
Searches indices from: now-6m (Date Math format, see also Additional look-back time
)
Maximum signals per execution: 100
Tags:
- Elastic
- Network
Version: 2 (version history)
Added (Elastic Stack release): 7.6.0
Last modified (Elastic Stack release): 7.6.1
Potential false positives
editSome networks may utilize PPTP protocols but this is uncommon as more modern VPN technologies are available. Usage that is unfamiliar to local network administrators can be unexpected and suspicious. Torrenting applications may use this port. Because this port is in the ephemeral range, this rule may false under certain conditions, such as when an application server replies to a client that used this port by coincidence. This is uncommon but such servers can be excluded.
Rule query
editnetwork.transport:tcp and destination.port:1723
Threat mapping
editFramework: MITRE ATT&CKTM
-
Tactic:
- Name: Command and Control
- ID: TA0011
- Reference URL: https://attack.mitre.org/tactics/TA0011/
-
Technique:
- Name: Commonly Used Port
- ID: T1043
- Reference URL: https://attack.mitre.org/techniques/T1043/
Rule version history
edit- Version 2 (7.6.1 release)
-
- Removed auditbeat-*, packetbeat-*, and winlogbeat-* from the rule indices.