alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Observed Earth Kasha Domain (tw8sl .com) in TLS SNI"; flow:established,to_server; tls.sni; dotprefix; content:".tw8sl.com"; endswith; fast_pattern; reference:url,www.trendmicro.com/en_us/research/24/k/lodeinfo-campaign-of-earth-kasha.html; classtype:domain-c2; sid:2058034; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2024_12_02, deployment Perimeter, malware_family Cobalt_Strike, malware_family LODEINFO, malware_family NOOPDOOR, performance_impact Low, confidence High, signature_severity Major, tag Earth_Kasha, updated_at 2024_12_02, mitre_tactic_id TA0010, mitre_tactic_name Exfiltration, mitre_technique_id T1048, mitre_technique_name Exfil_Over_Alternative_Protocol;)