alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Carberp file download"; flow:established,to_server; http.uri; content:"/cfg/"; depth:5; content:".plug"; classtype:trojan-activity; sid:2011850; rev:5; metadata:created_at 2010_10_26, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_04_21;)