alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Suspicious User Agent GetFile"; flow:established,to_server; http.user_agent; bsize:7; content:"GetFile"; classtype:trojan-activity; sid:2013903; rev:3; metadata:created_at 2011_11_11, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_02_08;)