alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET MALWARE Upatre Binary Download Jan 02 2014"; flow:established,to_client; http.content_type; bsize:10; content:"text/plain"; file.data; content:"ZZP|00|"; fast_pattern; within:4; classtype:trojan-activity; sid:2018055; rev:7; metadata:created_at 2014_02_03, signature_severity Major, updated_at 2024_03_27;)