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:"|0e|ckytiqfles.com"; fast_pattern:only; tls.fingerprint:"4f:b4:c8:1e:f5:c1:bf:0e:2e:53:3d:8c:46:63:40:67:a1:5f:25:fe"; reference:url,sslbl.abuse.ch; classtype:domain-c2; sid:2018705; rev:4; 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;)