alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Win32/Lumma Stealer Data Exfiltration Attempt M2"; reference:md5,9dcde1edfdd83f7cc28dcd31323be326; reference:md5,b3b025b8445dcbd9b7aca560ad752b74; classtype:trojan-activity; sid:2043206; rev:3; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2023_01_04, deployment Perimeter, malware_family lumma, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_03_26, reviewed_at 2025_07_14;)