xmastree

Explanation

The xmastree NDM monitors network traffic for flows with XMAS Tree packets (FIN, PSH, and URG) which are typically associated with attackers attempting to evade detection or compromise the integrity of the network.

What to Look For

To identify potential xmastree activity on your network, look for flows with XMAS Tree packets (FIN, PSH, and URG) in your network traffic logs. Ensure that endpoint security software is installed and up-to-date on all hosts to protect against attacks. Investigate any abnormal activity associated with the xmastree NDM event and report it to the appropriate security teams for further analysis.

Related MITRE ATT&CK Categories

Network Service Discovery, Technique T1046 - Enterprise
Active Scanning, Technique T1595 - Enterprise