alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Win32/Neutrino Checkin 6"; flow:to_server,established; http.method; content:"POST"; http.cookie; content:"authkeys="; http.request_body; content:"auth=1"; depth:6; http.header_names; content:!"Referer|0d 0a|"; reference:md5,656766ad934aa482cbe78f1bca6dadc2; reference:url,securitykitten.github.io/an-evening-with-n3utrino/; classtype:command-and-control; sid:2024179; rev:3; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2017_04_04, deployment Perimeter, malware_family Neutrino, performance_impact Moderate, confidence High, signature_severity Major, updated_at 2020_08_04;)