alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET INFO File Retrieved from File Sharing Site (cloudme .com)"; flow:established,to_server; http.method; content:"GET"; http.uri; content:"/v1/ws2/|3a|"; startswith; fast_pattern; http.header_names; content:!"Referer|0d 0a|"; content:"|0d 0a|Sec-Fetch-Site|0d 0a|Sec-Fetch-Mode|0d 0a|Sec-Fetch-User|0d 0a|Sec-Fetch-Dest|0d 0a|Accept-Encoding|0d 0a|"; classtype:bad-unknown; sid:2036424; rev:1; metadata:attack_target Client_Endpoint, created_at 2022_04_29, deployment Perimeter, deployment SSLDecrypt, confidence High, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_04_29;)