alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Lumma Stealer CnC Host Checkin"; flow:established,to_server; urilen:4; http.method; content:"POST"; http.uri; content:"/api"; http.header_names; content:!"|0d 0a|Referer|0d 0a|"; nocase; http.request_body; content:"act="; startswith; fast_pattern; reference:md5,c8e6cd1fb6f5dfe1ab548024a7f67043; reference:url,x.com/JAMESWT_MHT/status/1814207141449744845; classtype:trojan-activity; sid:2054653; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, tls_state TLSDecrypt, created_at 2024_07_23, deployment Perimeter, deployment SSLDecrypt, malware_family Lumma_Stealer, confidence Medium, signature_severity Major, tag c2, updated_at 2024_07_23, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1071, mitre_technique_name Application_Layer_Protocol;)