alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Midhos/Medfos downloader"; flow:established,to_server; http.uri; content:"/upload/fid="; content:"AAAAAAAAAAA"; http.host; bsize:14; content:"megaupload.com"; fast_pattern; http.user_agent; content:"Mozilla/4.0 (compatible|3b| MSIE 6.0"; startswith; http.header_names; to_lowercase; content:!"|0d 0a|accept|0d 0a|"; content:!"|0d 0a|connection|0d 0a|"; classtype:trojan-activity; sid:2016189; rev:5; metadata:created_at 2013_01_12, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_04_29;)