Rule History

alert tls $EXTERNAL_NET any -> $HOME_NET any (msg:"ET MALWARE Observed Malicious SSL/TLS Certificate (SilentLibrarian)"; flow:established,to_client; tls.certs; content:"|55 1d 11|"; tls.cert_subject; content:"*.rnit.me"; fast_pattern; classtype:domain-c2; sid:2037246; rev:2; metadata:created_at 2022_07_01, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_04_22;)