alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET WEB_CLIENT Generic Mailer Accessed on External Compromised Server"; flow:established,to_client; file.data; content:"<title>Mailer By ME</title>"; fast_pattern; content:"<form id=|22|form1|22 20|name=|22|form1|22 20|method=|22|post|22|"; nocase; distance:0; content:"<input type=|22|hidden|22 20|name=|22|vai|22|"; nocase; distance:0; classtype:web-application-attack; sid:2031029; rev:2; metadata:affected_product Web_Browsers, attack_target Client_Endpoint, created_at 2020_10_19, deployment Perimeter, confidence Medium, signature_severity Major, tag Phishing, updated_at 2020_10_19;)