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.CrimsonRAT inbound connection attempt
This rule looks for outbound communication from new variants of CrimsonRAT malware. It's a custom protocol that is port agnostic and dictated by the malware.
Triggers on outbound communication from new variant of CrimsonRAT malware.
No public information
No known false positives
Cisco Talos Intelligence Group
No rule groups
None
No information provided
None
Tactic: Command and Control
Technique: Custom Command and Control Protocol
For reference, see the MITRE ATT&CK vulnerability types here: https://attack.mitre.org
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