alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE ScarCruft TA409 Domain in TLS SNI (depositurl .lat)"; flow:established,to_server; tls.sni; bsize:14; content:"depositurl.lat"; fast_pattern; reference:url,www.sentinelone.com/labs/a-glimpse-into-future-scarcruft-campaigns-attackers-gather-strategic-intelligence-and-target-cybersecurity-professionals/; classtype:trojan-activity; sid:2050320; rev:2; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2024_01_22, deployment Perimeter, deprecation_reason Age, performance_impact Low, confidence Medium, signature_severity Major, tag ScarCruft, tag TA409, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_02_22, reviewed_at 2024_02_22, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1071, mitre_technique_name Application_Layer_Protocol;)