alert http $EXTERNAL_NET any -> $HOME_NET 1025:5000 (msg:"ET MALWARE Possible Web-based DDoS-command being issued"; flow:established,to_client; http.server; content:"nginx/0."; startswith; http.content_type; content:"text/html"; http.header.raw; content:"|3a|80|3b|255.255.255.255"; fast_pattern; classtype:trojan-activity; sid:2003296; rev:8; metadata:created_at 2010_07_30, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_04_11;)