alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET DELETED Dyre Downloading Mailer"; flow:established,to_server; content:"GET"; http_method; content:".tar"; http_uri; content:!"Accept"; http_header; content:!"Connection|3a|"; http_header; content:!"Referer|3a|"; http_header; content:"User-Agent|3a 20|Mozilla/5.0 (Windows NT 6.1|3b| Win64|3b| x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/39.0.2171.71 Safari/537.36|0d 0a|Host|3a|"; depth:132; http_header; fast_pattern:50,20; pcre:"/^[^\r\n]+\r\n(?:\r\n)?$/RH"; pcre:"/\.tar$/U"; classtype:trojan-activity; sid:2020308; rev:4; metadata:created_at 2015_01_26, signature_severity Unknown, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_08_20;)