alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE SocGholish CnC Domain in TLS SNI (exchange .tuckx .com)"; flow:established,to_server; tls.sni; bsize:18; content:"exchange.tuckx.com"; fast_pattern; reference:url,community.emergingthreats.net/t/et-socgholish-rules-response-guidance/335; classtype:domain-c2; sid:2060115; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2025_02_14, deployment Perimeter, malware_family SocGholish, performance_impact Low, confidence High, signature_severity Critical, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2025_02_14;)