Rule History

alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Playful Taurus Domain in TLS SNI (mail .indiarailways .net)"; flow:established,to_server; tls.sni; dotprefix; content:".mail.indiarailways.net"; endswith; fast_pattern; reference:url,unit42.paloaltonetworks.com/playful-taurus/; classtype:trojan-activity; sid:2046759; rev:2; metadata:attack_target Client_Endpoint, created_at 2023_07_10, deployment Perimeter, malware_family PlayfulTaurus, confidence High, signature_severity Major, tag SSL_Malicious_Cert, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_09_19, reviewed_at 2023_09_19, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1071, mitre_technique_name Application_Layer_Protocol;)