Versions (5)
Version DetailsCurrent
Rev: 3 • Jul 5, 2016, 12:00 PMET MALWARE ABUSE.CH SSL Fingerprint Blacklist Malicious SSL Certificate Detected (Malware C2)
alert tls $EXTERNAL_NET any -> $HOME_NET any (msg:"ET MALWARE ABUSE.CH SSL Fingerprint Blacklist Malicious SSL Certificate Detected (Malware C2)"; flow:established,to_client; tls.cert_serial; content:"00:F8:F1:74:46:04:C2:A4:42"; fast_pattern; tls.cert_subject; content:"C=US"; reference:url,sslbl.abuse.ch; classtype:domain-c2; sid:2022944; rev:3; metadata:attack_target Client_and_Server, created_at 2016_07_05, deployment Perimeter, performance_impact Low, confidence High, signature_severity Major, tag SSL_Malicious_Cert, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_04_18, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1071, mitre_technique_name Application_Layer_Protocol;)
Jul 5, 2016, 12:00 PM
Apr 18, 2024, 12:00 PM
Sep 21, 2024, 3:00 AM
Oct 6, 2025, 4:34 PM
rules/emerging-malware.rules