Versions (5)
Version DetailsCurrent
Rev: 2 • Jul 30, 2021, 12:00 PMET MALWARE Observed Malicious SSL Cert (FIN8 CnC)
alert tls $EXTERNAL_NET any -> $HOME_NET any (msg:"ET MALWARE Observed Malicious SSL Cert (FIN8 CnC)"; flow:from_server,established; tls.cert_subject; content:"CN=api-cdnw5.net"; nocase; fast_pattern; classtype:domain-c2; sid:2033624; rev:2; metadata:attack_target Client_and_Server, created_at 2021_07_30, deployment Perimeter, performance_impact Low, confidence High, signature_severity Major, tag SSL_Malicious_Cert, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_07_30, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1071, mitre_technique_name Application_Layer_Protocol;)
Jul 30, 2021, 12:00 PM
Jul 30, 2021, 12:00 PM
Sep 21, 2024, 3:00 AM
Sep 9, 2025, 9:34 PM
rules/emerging-malware.rules