alert http $HTTP_SERVERS any -> $EXTERNAL_NET any (msg:"ET WEB_SERVER Leaf PHPMailer Accessed on Internal Server"; flow:established,to_client; file.data; content:"<title>Leaf PHPMailer"; fast_pattern; content:"<li>[-email-] : <b>Reciver Email"; content:"<li>[-emailuser-] : <b>Email User"; classtype:web-application-attack; sid:2029905; rev:2; metadata:affected_product Web_Server_Applications, attack_target Web_Server, created_at 2020_04_14, deployment Perimeter, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_04_14;)