Rule History

alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Observed RAT Delivery Domain (mytenderportal .com in TLS SNI)"; flow:established,to_server; tls.sni; dotprefix; content:".mytenderportal.com"; endswith; fast_pattern; classtype:trojan-activity; sid:2069263; rev:1; metadata:attack_target Client_Endpoint, created_at 2026_05_11, deployment Perimeter, confidence High, signature_severity Major, tag RAT, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2026_05_11;)