alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE FakeAV User-Agent XML"; flow:established,to_server; http.user_agent; content:"XML"; bsize:3; classtype:trojan-activity; sid:2013374; rev:4; metadata:created_at 2011_08_05, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_08_13;)