alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Observed Gamaredon APT Related Domain (baruta .ru in TLS SNI)"; flow:established,to_server; tls.sni; dotprefix; content:".baruta.ru"; endswith; fast_pattern; reference:url,twitter.com/Cyber0verload/status/1679757171469307904; reference:url,twitter.com/Cyber0verload/status/1686972930360553473; classtype:trojan-activity; sid:2047150; rev:1; metadata:attack_target Client_Endpoint, created_at 2023_08_08, deployment Perimeter, malware_family Gamaredon, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_08_08, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1071, mitre_technique_name Application_Layer_Protocol;)