alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Lumma Stealer Related Activity M2"; flow:established,to_server; http.method; content:"POST"; http.uri; content:"/api"; bsize:4; http.content_type; content:"application/x-www-form-urlencoded"; bsize:33; http.request_body; content:"act=recive_message&ver="; startswith; fast_pattern; content:"&lid="; distance:0; reference:url,twitter.com/g0njxa/status/1737123594054906114; classtype:trojan-activity; sid:2049812; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2023_12_21, deployment Perimeter, malware_family lumma, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_12_21;)