Versions (4)
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Rev: 1 • Jul 3, 2020, 12:00 PMET MALWARE Observed Malicious SSL Cert (CobaltStrike CnC)
alert tls $EXTERNAL_NET any -> $HOME_NET any (msg:"ET MALWARE Observed Malicious SSL Cert (CobaltStrike CnC)"; flow:established,to_client; tls.cert_subject; content:"CN=typiconsult.com"; nocase; endswith; classtype:domain-c2; sid:2030466; rev:1; metadata:attack_target Client_and_Server, created_at 2020_07_03, deployment Perimeter, malware_family Cobalt_Strike, performance_impact Low, confidence High, signature_severity Major, tag SSL_Malicious_Cert, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_07_03, mitre_tactic_id TA0042, mitre_tactic_name Resource_Development, mitre_technique_id T1587, mitre_technique_name Develop_Capabilities;)
Jul 3, 2020, 12:00 PM
Jul 3, 2020, 12:00 PM
Sep 21, 2024, 3:00 AM
Sep 17, 2025, 9:34 PM
rules/emerging-malware.rules