Versions (4)
Version DetailsCurrent
Rev: 4 • Nov 24, 2015, 12:00 PMET MALWARE ABUSE.CH SSL Blacklist Malicious SSL certificate detected (Downloader CnC)
alert tls $EXTERNAL_NET any -> $HOME_NET any (msg:"ET MALWARE ABUSE.CH SSL Blacklist Malicious SSL certificate detected (Downloader CnC)"; flow:established,to_client; tls.cert_serial; content:"00:87:58:1A:93:F4:B1:C2:6B"; fast_pattern; tls.cert_subject; content:"O=Default Company Ltd"; reference:url,sslbl.abuse.ch; classtype:domain-c2; sid:2022133; rev:4; metadata:attack_target Client_and_Server, created_at 2015_11_24, deployment Perimeter, performance_impact Low, confidence High, signature_severity Major, tag SSL_Malicious_Cert, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_04_11, mitre_tactic_id TA0042, mitre_tactic_name Resource_Development, mitre_technique_id T1587, mitre_technique_name Develop_Capabilities;)
Nov 24, 2015, 12:00 PM
Apr 11, 2024, 12:00 PM
Sep 21, 2024, 3:00 AM
Jan 7, 2026, 10:34 PM
rules/emerging-malware.rules