alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Upatre Common URI Struct Feb 12 2015"; flow:established,to_server; http.method; content:"GET"; http.uri; content:"/0/"; fast_pattern; pcre:"/\/(?:5[12]|6[0-3])\/0\/[A-Z]*$/"; http.host; pcre:"/^(?:\d{1,3}\.){3}\d{1,3}$/"; http.header_names; content:!"Accept-"; content:!"Referer|0d 0a|"; classtype:trojan-activity; sid:2020419; rev:6; metadata:created_at 2015_02_13, performance_impact Significant, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_04_22;)