Rule History

alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Observed RMM Payload Delivery Domain (marassociate .cyou) Domain (marassociate .cyou in TLS SNI)"; flow:established,to_server; tls.sni; dotprefix; content:".marassociate.cyou"; endswith; fast_pattern; classtype:trojan-activity; sid:2068928; rev:1; metadata:attack_target Client_Endpoint, created_at 2026_04_22, deployment Perimeter, confidence High, signature_severity Major, tag RMM, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2026_04_22;)