alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET EXPLOIT_KIT Parrot TDS Domain in TLS SNI (ping .cachespace .net)"; flow:established,to_server; tls.sni; bsize:19; content:"ping.cachespace.net"; fast_pattern; reference:url,community.emergingthreats.net/t/et-socgholish-rules-response-guidance/335; classtype:exploit-kit; sid:2050461; rev:3; metadata:affected_product Web_Browsers, attack_target Client_Endpoint, created_at 2024_01_24, deployment Perimeter, performance_impact Low, confidence High, signature_severity Minor, tag Exploit_Kit, tag ta569, tag TDS, tag Parrot_TDS, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_07_17, reviewed_at 2025_01_22;)