MALWARE-CNC -- Snort has detected a Comand and Control (CNC) rule violation, most likely for commands and calls for files or other stages from the control server. The alert indicates a host has been infiltrated by an attacker, who is using the host to make calls for files, as a call-home vector for other malware-infected networks, for shuttling traffic back to bot owners, etc.
MALWARE-CNC Win.Trojan.Ursnif variant outbound beacon
The rule looks for URLs in HTTP requests that match known Win.Trojan.Ursnif patterns.
What To Look For
This rule alerts on an outbound HTTP beaconing request generated by Win.Trojan.Ursnif.
No public information
No known false positives
Cisco Talos Intelligence Group