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:"V5 PHPMailer</title>"; fast_pattern; content:"for=|22|senderName|22|>Sender Name</label>"; content:"type=|22|file|22 20|name=|22|attachment[]|22 20|id=|22|attachment[]|22|"; classtype:web-application-attack; sid:2032079; rev:2; metadata:affected_product Web_Server_Applications, attack_target Web_Server, created_at 2021_03_16, deployment Perimeter, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_03_16;)