Versions (5)
Version DetailsCurrent
Rev: 3 • May 18, 2015, 12:00 PMET MALWARE ABUSE.CH SSL Blacklist Malicious SSL certificate detected (Dridex CnC)
alert tls $EXTERNAL_NET any -> $HOME_NET any (msg:"ET MALWARE ABUSE.CH SSL Blacklist Malicious SSL certificate detected (Dridex CnC)"; flow:established,to_client; tls.cert_serial; content:"00:"; startswith; tls.cert_subject; content:"O=Widgets Numbers PTY"; fast_pattern; reference:url,sslbl.abuse.ch; classtype:domain-c2; sid:2021112; rev:3; metadata:attack_target Client_and_Server, created_at 2015_05_18, deployment Perimeter, performance_impact Low, confidence High, signature_severity Major, tag SSL_Malicious_Cert, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_04_09, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1071, mitre_technique_name Application_Layer_Protocol;)
May 18, 2015, 12:00 PM
Apr 9, 2024, 12:00 PM
Sep 21, 2024, 3:00 AM
Oct 2, 2025, 10:34 PM
rules/emerging-malware.rules