alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET HUNTING DropBox User Content Download for payload.bin"; http.method; content:"GET"; http.host; content:"dl.dropbox.com"; http.uri; content:"/payload.bin"; endswith; fast_pattern; reference:md5,7f3e405d6e9fb03de14551e19e3dfccb; classtype:trojan-activity; sid:2046264; rev:1; metadata:created_at 2023_06_14, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_06_14;)