alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE VBKrypt.dytr Checkin"; flow:established,to_server; http.uri; content:"/gate.php?id="; content:"&pc="; content:"&os="; content:"&version="; http.header_names; content:!"|0d 0a|User-Agent|0d 0a|"; reference:md5,090986b0e303779bde1ddad3c65a9d78; classtype:command-and-control; sid:2014003; rev:4; metadata:created_at 2011_08_16, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_02_08;)