alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Fivfrom Downloader (Unitrix)"; flow:established,to_server; content:".php?seller="; http_uri; content:"&hash={"; http_uri; pcre:"/hash=\{[a-f0-9]+-/Ui"; classtype:trojan-activity; sid:2013555; rev:5; metadata:created_at 2011_09_10, signature_severity Major, updated_at 2019_07_26;)