alert http $EXTERNAL_NET any -> $HTTP_SERVERS any (msg:"ET WEB_SERVER WebShell Generic - wget http - POST"; flow:established,to_server; http.request_body; content:"wget"; nocase; content:"http"; nocase; within:11; classtype:bad-unknown; sid:2016683; rev:3; metadata:created_at 2013_03_27, confidence Medium, signature_severity Minor, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_04_23;)