alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Upatre Downloader 2p (Zeus) May 07 2014"; flow:to_server,established; http.uri; content:"2p/"; fast_pattern; pcre:"/\/p?2p\/[a-z]{3}$/"; http.header_names; content:!"Accept-Language"; content:!"Referer|0d 0a|"; classtype:trojan-activity; sid:2018453; rev:7; metadata:created_at 2014_05_08, signature_severity Major, updated_at 2020_09_25;)