alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE TA569 Gholoader CnC Domain in TLS SNI (images .bluebehi .eu .org)"; flow:established,to_server; tls.sni; dotprefix; content:".images.bluebehi.eu.org"; endswith; fast_pattern; reference:url,community.emergingthreats.net/t/et-socgholish-rules-response-guidance/335; classtype:trojan-activity; sid:2068375; rev:1; metadata:affected_product Web_Browsers, attack_target Client_Endpoint, created_at 2026_03_20, deployment Perimeter, malware_family SocGholish, performance_impact Low, confidence High, signature_severity Major, tag Exploit_Kit, tag ta569, tag compromised_website, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2026_03_20;)