alert tls $EXTERNAL_NET any -> $HOME_NET any (msg:"ET MALWARE Malicious SSL Certificate detected (BoratRat)"; flow:established,to_client; tls.cert_subject; content:"CN=BoratRat"; endswith; fast_pattern; classtype:trojan-activity; sid:2038725; rev:1; metadata:attack_target Client_Endpoint, created_at 2022_09_01, deployment Perimeter, malware_family BoratRAT, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_09_01;)