cups_browsed_internal

Explanation

This event is triggered by Netography's Fusion Portal when it detects traffic on UDP port 631 exiting your network. UDP port 631 is usually associated with the CUPS-Browsed service and is used to automatically add available local printers. While it may be odd by itself, this traffic may also indicate a compromise and that an attacker is attempting to trigger CVE-2024-47176 on other hosts from your network.

What to Look For
Investigate the source of these requests for malware infection or unauthorized software, and consider blocking UDP port 631 at the firewall.

Related MITRE ATT&CK Categories

External Remote Services, Technique T1572 - Enterprise

Exploit Public-Facing Application, Technique T1572 - Enterprise