alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET INFO HTTP Sniffer Domain in TLS SNI (httpdebugger .com)"; flow:established,to_server; tls.sni; bsize:16; content:"httpdebugger.com"; fast_pattern; reference:url,www.safebreach.com/resources/blog/remote-access-trojan-coderat; classtype:misc-activity; sid:2038783; rev:2; metadata:attack_target Client_Endpoint, created_at 2022_09_09, deployment Perimeter, confidence High, signature_severity Informational, tag SSL_Malicious_Cert, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_03_26, reviewed_at 2024_12_02;)