Rule History

alert tls $EXTERNAL_NET any -> $HOME_NET any (msg:"ET MALWARE ABUSE.CH SSL Fingerprint Blacklist Malicious SSL certificate detected (KINS C2)"; flow:established,from_server; content:"|17|delfi-fro-youindigo.com"; tls.fingerprint:"72:ce:ed:55:39:c6:0f:e7:ef:db:c8:7e:77:7f:73:1c:75:d3:ff:ea"; reference:url,sslbl.abuse.ch; classtype:domain-c2; sid:2018711; rev:5; metadata:attack_target Client_and_Server, created_at 2014_07_17, deployment Perimeter, performance_impact Low, confidence High, signature_severity Major, tag SSL_Malicious_Cert, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_07_04, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1071, mitre_technique_name Application_Layer_Protocol;)