ET MALWARE JS/HTA Downloader Behavior M3

Query · suricata

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";
Raw source ET MALWARE JS/HTA Downloader Behavior M3 · Suricata
Esc
Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
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;
)

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