Rule History

alert tls $EXTERNAL_NET any -> $HOME_NET any (msg:"ET MALWARE ABUSE.CH SSL Fingerprint Blacklist Malicious SSL Certificate Detected (Gootkit C2)"; flow:established,to_client; tls.cert_serial; content:"00:CF:DD:B8:9F:9D:14:26:AD"; tls.cert_subject; content:"CN=localhost.localdomain"; fast_pattern; reference:url,sslbl.abuse.ch; classtype:domain-c2; sid:2023572; rev:4; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_and_Server, created_at 2016_12_01, deployment Perimeter, deprecation_reason Age, performance_impact Low, confidence High, signature_severity Major, tag SSL_Malicious_Cert, updated_at 2024_04_03, reviewed_at 2024_04_03, mitre_tactic_id TA0042, mitre_tactic_name Resource_Development, mitre_technique_id T1587, mitre_technique_name Develop_Capabilities;)