alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Delf HTTP Checkin (1)"; flow:established,to_server; http.uri; content:"/mydown.asp?"; fast_pattern; nocase; content:"reg="; nocase; content:"&ver="; nocase; content:"&tgid="; nocase; content:"&address="; nocase; content:"&mydo="; nocase; content:"&flag="; nocase; classtype:command-and-control; sid:2007838; rev:6; metadata:created_at 2010_07_30, signature_severity Major, updated_at 2024_03_16;)