alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET USER_AGENTS Suspicious User-Agent (test-upload)"; flow:established,to_server; http.user_agent; content:"test-upload"; nocase; bsize:11; reference:md5,c110a5814451bbfba9eb41a2b2328213; classtype:bad-unknown; sid:2034548; rev:1; metadata:attack_target Client_Endpoint, created_at 2021_11_29, deployment Perimeter, confidence High, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_11_29;)