alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Echelon/DarkStealer Variant CnC Exfil M2"; flow:established,to_server; http.method; content:"POST"; http.uri; content:".php?chatid="; content:"&username="; content:"&machineName="; fast_pattern; content:"&Country="; content:"&HWID="; content:"&ip="; http.request_body; content:".zip|22 0d 0a|"; http.header_names; to_lowercase; content:!"|0d 0a|referer|0d 0a|"; content:!"|0d 0a|user-agent|0d 0a|"; reference:md5,fed2a8736c84eda9dcc8533b5019f7d8; classtype:trojan-activity; sid:2030699; rev:3; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2020_08_18, deployment Perimeter, malware_family DarkStealer, malware_family EchelonStealer, confidence High, signature_severity Major, updated_at 2024_04_28;)