alert http $HTTP_SERVERS any -> $EXTERNAL_NET any (msg:"ET WEB_CLIENT Generic Mailer Accessed on Internal Server"; flow:established,to_client; file.data; content:"<h1>PAYLEETS - TESTER"; fast_pattern; nocase; content:">Check Mailling ..</font>"; nocase; distance:0; content:"type=|22|submit|22 20|value=|22|Send test >>|22|>"; nocase; distance:0; classtype:web-application-attack; sid:2030329; rev:3; metadata:affected_product Web_Server_Applications, attack_target Web_Server, created_at 2020_06_12, deployment Perimeter, confidence Medium, signature_severity Critical, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_07_06;)