Rule History

alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET PHISHING TA453 Domain in TLS SNI (click-choose-figured .cfd)"; flow:established,to_server; tls.sni; dotprefix; content:".click-choose-figured.cfd"; endswith; fast_pattern; classtype:misc-activity; sid:2054987; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2024_08_07, deployment Perimeter, performance_impact Low, confidence High, signature_severity Major, tag TA453, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_08_07, reviewed_at 2025_01_06, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1566, mitre_technique_name Phishing;)