alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Small.zon checkin"; flow:established,to_server; content:"GET"; depth:3; http_method; content:"?n="; http_uri; content:"&id="; http_uri; content:"&t="; http_uri; content:"&i="; http_uri; pcre:"/\?n=\d+&id=.+&t=.+&i=\d/Ui"; classtype:command-and-control; sid:2009300; rev:6; metadata:created_at 2010_07_30, signature_severity Major, updated_at 2019_07_26;)