alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Monkif Checkin"; flow:established,to_server; content:"GET"; nocase; http_method; content:"/photo/"; http_uri; content:"6x5x5772=712x5772=716x"; http_uri; classtype:command-and-control; sid:2012505; rev:4; metadata:created_at 2011_03_15, signature_severity Major, updated_at 2019_07_26;)