alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Suspicious invoice.scr Download Request"; flow:established,to_server; http.method; content:"GET"; http.uri; content:"|2F|invoice.scr"; fast_pattern; nocase; pcre:"/\x2Finvoice\x2Escr$/i"; classtype:trojan-activity; sid:2011995; rev:5; metadata:created_at 2010_12_02, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_03_18;)