alert dns $HOME_NET any -> any any (msg:"ET MALWARE Lumma Stealer Related CnC Domain in DNS Lookup (curtainjors .fun)"; dns.query; bsize:15; content:"curtainjors.fun"; fast_pattern; nocase; reference:md5,f7eedcb96e46b75b2b9f0ecceebdf99f; classtype:domain-c2; sid:2054372; rev:3; metadata:attack_target Client_Endpoint, created_at 2024_07_08, deployment Perimeter, deployment Internal, deprecation_reason Age, malware_family Lumma_Stealer, performance_impact Low, confidence High, signature_severity Major, updated_at 2025_03_07, reviewed_at 2025_03_07, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1071, mitre_technique_name Application_Layer_Protocol; target:src_ip;)