alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Pakes2 - Checkin - /test.php"; flow:established,to_server; urilen:9; http.uri; content:"/test.php"; fast_pattern; http.header_names; content:!"User-Agent"; classtype:command-and-control; sid:2015523; rev:4; metadata:created_at 2012_07_25, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_04_22;)