alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Mevade Checkin"; flow:to_server,established; http.method; content:"GET"; http.uri; content:"/attachments/ip.php"; classtype:command-and-control; sid:2017558; rev:4; metadata:created_at 2013_10_05, signature_severity Major, updated_at 2020_04_27;)