alert tls $EXTERNAL_NET any -> $HOME_NET any (msg:"ET MALWARE Observed Malicious SSL Cert (VenomRAT)"; flow:established,to_client; tls.cert_subject; bsize:11; content:"CN=VenomRAT"; fast_pattern; reference:md5,0ee108a8e3b9cddad2cceb2648072fe2; classtype:domain-c2; sid:2052267; rev:1; metadata:attack_target Client_Endpoint, created_at 2024_04_25, deployment Perimeter, performance_impact Low, confidence High, signature_severity Major, tag SSL_Malicious_Cert, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_04_25;)