alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE JS/HTA Downloader Behavior M3"; flow:to_server,established; http.uri; content:".php?cmd=p&id="; fast_pattern; content:"&rnd="; pcre:"/\.php\?cmd=p&id=\w+.*?&rnd=[\x2e\d]+$/i"; http.header_names; content:!"Referer"; reference:md5,d3abaa6736d7d549eca8644c67e9fcfe; classtype:trojan-activity; sid:2023485; rev:6; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2016_11_07, deployment Perimeter, performance_impact Low, signature_severity Major, updated_at 2020_10_09;)