Rule History

alert tls $EXTERNAL_NET any -> $HOME_NET any (msg:"ET MALWARE ABUSE.CH SSL Blacklist Malicious SSL certificate detected (KINS C2)"; flow:established,from_server; tls.certs; content:"|2a 86 48 86 f7 0d 01 09 01|"; tls.cert_subject; content:"groundbellsinc2@yahoo.com"; reference:url,sslbl.abuse.ch; classtype:domain-c2; sid:2019149; rev:3; metadata:attack_target Client_and_Server, created_at 2014_09_10, deployment Perimeter, performance_impact Low, confidence High, signature_severity Major, tag SSL_Malicious_Cert, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_04_17, mitre_tactic_id TA0042, mitre_tactic_name Resource_Development, mitre_technique_id T1587, mitre_technique_name Develop_Capabilities;)