alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET EXPLOIT_KIT TA569 Middleware Domain in TLS SNI (majorbrdide .com)"; flow:established,to_server; tls.sni; bsize:15; content:"majorbrdide.com"; fast_pattern; reference:url,community.emergingthreats.net/t/et-socgholish-rules-response-guidance/335; classtype:exploit-kit; sid:2055874; rev:1; metadata:affected_product Web_Browsers, attack_target Client_Endpoint, created_at 2024_09_16, deployment Perimeter, performance_impact Low, confidence High, signature_severity Minor, tag Exploit_Kit, tag TDS, tag compromised_website, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_09_16, reviewed_at 2025_01_22;)