alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE SocGholish CnC Domain in TLS SNI (* .novelty .akibacreative .com)"; flow:established,to_server; tls.sni; dotprefix; content:".novelty.akibacreative.com"; endswith; fast_pattern; reference:url,community.emergingthreats.net/t/et-socgholish-rules-response-guidance/335; reference:url,infosec.exchange/@monitorsg/111437135586839468; classtype:domain-c2; sid:2049267; rev:3; metadata:attack_target Client_Endpoint, created_at 2023_11_19, deployment Perimeter, deprecation_reason Age, malware_family SocGholish, performance_impact Low, confidence High, signature_severity Major, tag compromised_website, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_09_19, reviewed_at 2024_01_10, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1071, mitre_technique_name Application_Layer_Protocol;)