alert tls $EXTERNAL_NET any -> $HOME_NET any (msg:"ET MALWARE Malicious SSL Cert (KINS C2)"; flow:established,to_client; tls.cert_subject; content:"CN=sslbl.abuse.ch"; content:"we_love_selfsigned@abuse.ch"; reference:md5,73705a4a8b03e5f866fac821aaec273a; classtype:domain-c2; sid:2018767; rev:3; metadata:attack_target Client_and_Server, created_at 2014_07_24, deployment Perimeter, performance_impact Low, confidence Medium, signature_severity Major, tag SSL_Malicious_Cert, updated_at 2024_04_23, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1071, mitre_technique_name Application_Layer_Protocol;)