alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET EXPLOIT_KIT TA569 Keitaro TDS Domain in TLS SNI (machinetext .org)"; flow:established,to_server; tls.sni; bsize:15; content:"machinetext.org"; fast_pattern; classtype:exploit-kit; sid:2048050; rev:1; metadata:affected_product Web_Browsers, attack_target Client_Endpoint, created_at 2023_09_12, deployment Perimeter, performance_impact Low, confidence High, signature_severity Minor, tag Exploit_Kit, tag ta569, tag TDS, tag compromised_website, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_09_12, reviewed_at 2024_06_19;)