alert http1 $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Boaxxe HTTP POST Checkin"; flow:established,to_server; http.method; content:"POST"; nocase; http.uri; content:"/u/"; http.header_names; content:"|0d 0a|user-Agent|0d 0a|"; fast_pattern; http.user_agent; bsize:17; content:"Internet Explorer"; http.request_body; content:"a="; content:"&b="; classtype:command-and-control; sid:2009297; rev:9; metadata:created_at 2010_07_30, signature_severity Major, updated_at 2024_04_10;)