alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE DMSpammer HTTP Post Checkin"; flow:established,to_server; http.method; content:"POST"; nocase; http.uri; content:"/stat"; content:".php"; pcre:"/\/stat\d+\.php/"; http.user_agent; content:"Mozilla/4.0 (compatible|3b 20|Synapse)"; depth:33; endswith; fast_pattern; http.request_body; content:"x|9c|"; classtype:command-and-control; sid:2008271; rev:11; metadata:created_at 2010_07_30, signature_severity Major, updated_at 2020_10_13;)