alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Maldoc Downloading from Dropbox via API"; flow:established,to_server; http.method; content:"GET"; http.uri; content:"/2/files/download"; http.header; content:"Authorization|3a 20|Bearer|20|FLtUsbS3oqcAAAAAAAAAAZ_86BAKGkKPNHeBSV8ETDcqFjlDgagrviCEw0VV6Ecn|0d 0a|"; content:"/Energy/staging/debugps"; fast_pattern; http.host; content:"content.dropboxapi.com"; bsize:22; reference:url,twitter.com/ShadowChasing1/status/1407540607954743297; reference:md5,f123a68eea92b34d76f0ca0b677419bd; classtype:trojan-activity; sid:2033170; rev:1; metadata:attack_target Client_Endpoint, created_at 2021_06_23, deployment Perimeter, deployment SSLDecrypt, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_06_23;)