alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET WEB_SERVER WebShell - PHP eMailer"; flow:established,to_server; http.method; content:"POST"; http.request_body; content:"form-data|3b| name=|22|from|22|"; content:"form-data|3b| name=|22|realname|22|"; content:"form-data|3b| name=|22|amount|22|"; classtype:web-application-activity; sid:2015924; rev:3; metadata:created_at 2012_11_24, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_04_22;)