alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE MedusaHTTP Variant CnC Checkin M2"; flow:established,to_server; http.method; content:"POST"; http.uri; content:".jsp"; endswith; http.request_body; content:"Webcookie="; startswith; pcre:"/^[a-z0-9/%=]{100,}$/Rsi"; http.header_names; content:!"Referer"; reference:md5,c2262e46153ac59a72bcb96a35c262da; classtype:command-and-control; sid:2029097; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2019_12_05, deployment Perimeter, malware_family MedusaHTTP, confidence High, signature_severity Major, updated_at 2019_12_05;)