alert tls $EXTERNAL_NET any -> $HOME_NET any (msg:"ET MALWARE Malicious SSL certificate detected (OSX/Keydnap CnC)"; flow:established,to_client; tls.cert_subject; content:"CN=g5wcesdfjzne7255.onion.to"; reference:url,welivesecurity.com/2016/07/06/new-osxkeydnap-malware-hungry-credentials; classtype:domain-c2; sid:2022953; rev:4; metadata:affected_product Mac_OSX, attack_target Client_and_Server, created_at 2016_07_07, deployment Perimeter, deprecation_reason Age, performance_impact Low, confidence High, signature_severity Major, tag SSL_Malicious_Cert, tag TROJAN_OSX_Keydnap, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_04_08, reviewed_at 2024_04_08, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1071, mitre_technique_name Application_Layer_Protocol;)