alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE W32/TCYWin.Downloader User-Agent"; flow:established,to_server; http.user_agent; content:"TCYWinHTTPDownload"; reference:md5,4cfe5674d9f33804572ae0d14f0c941b; classtype:trojan-activity; sid:2014305; rev:4; metadata:created_at 2012_03_05, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_04_24;)