alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE RedHive CnC Victim Registration M1"; flow:established,to_server; http.method; content:"GET"; http.uri; content:"/start.php"; startswith; fast_pattern; content:"pc="; content:"country="; content:"hwid="; content:"os="; content:"osbuild="; content:"av="; content:"ps="; http.user_agent; pcre:"/^[a-z]{90,120}$/Ri"; reference:url,winslow1984.com/books/threat-intelligence/page/hey-you-hacked-a-hacker-are-you-ready-for-my-revenge; classtype:command-and-control; sid:2072608; rev:1; metadata:affected_product Windows_Client_Apps, attack_target Client_Endpoint, created_at 2026_10_30, deployment Perimeter, malware_family RedHive, confidence High, signature_severity Major, tag c2, updated_at 2026_10_30, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1071, mitre_technique_name Application_Layer_Protocol; target:src_ip;)