Rule History

alert tls $EXTERNAL_NET any -> $HOME_NET any (msg:"ET DELETED ABUSE.CH SSL Fingerprint Blacklist Malicious SSL certificate detected (KINS C2)"; flow:established,from_server; content:"|1a|root@localhost.localdomain"; tls.fingerprint:"a8:c7:79:04:f3:e6:1e:6d:18:2d:7a:69:15:25:c4:09:ff:12:ef:86"; reference:url,sslbl.abuse.ch; classtype:domain-c2; sid:2018718; rev:6; 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 2022_01_15, mitre_tactic_id TA0042, mitre_tactic_name Resource_Development, mitre_technique_id T1587, mitre_technique_name Develop_Capabilities;)