Versions (3)
Version DetailsCurrent
Rev: 4 • Jun 26, 2015, 12:00 PMET MALWARE ABUSE.CH SSL Blacklist Malicious SSL certificate detected (Ransomware CnC)
alert tls $EXTERNAL_NET any -> $HOME_NET any (msg:"ET MALWARE ABUSE.CH SSL Blacklist Malicious SSL certificate detected (Ransomware CnC)"; flow:established,to_client; tls.cert_serial; content:"00:8F:E3:5B:C8:EA:55:D6:4A"; fast_pattern; tls.cert_subject; content:"L=Default City"; content:"O=Default Company Ltd"; reference:url,sslbl.abuse.ch; classtype:command-and-control; sid:2021354; rev:4; metadata:attack_target Client_Endpoint, created_at 2015_06_26, deployment Perimeter, confidence High, signature_severity Major, tag SSL_Malicious_Cert, tag Ransomware, updated_at 2024_04_11, mitre_tactic_id TA0040, mitre_tactic_name Impact, mitre_technique_id T1486, mitre_technique_name Data_Encrypted_for_Impact;)
Jun 26, 2015, 12:00 PM
Apr 11, 2024, 12:00 PM
Sep 21, 2024, 3:00 AM
May 30, 2025, 12:04 AM
rules/emerging-malware.rules