ET MALWARE Downloader.Banload2.KZU Checkin 2

Query · suricata

flow:established,to_server;
http.method;
content:"GET";
http.uri;
content:".hlp"; nocase; fast_pattern;
pcre:"/^\/[^\x2f]+?\.hlp$/i";
http.header;
content:"Accept-Encoding|3a 20|identity|0d 0a|User-Agent|3a 20|Mozilla/3.0 (compatible|3b 20|Indy Library)";
http.header_names;
content:!"Referer";
Raw source ET MALWARE Downloader.Banload2.KZU Checkin 2 · Suricata
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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 -> $EXTERNAL_NET any (
    msg:"ET MALWARE Downloader.Banload2.KZU Checkin 2";
    flow:established,to_server;
    http.method;
    content:"GET";
    http.uri;
    content:".hlp"; nocase; fast_pattern;
    pcre:"/^\/[^\x2f]+?\.hlp$/i";
    http.header;
    content:"Accept-Encoding|3a 20|identity|0d 0a|User-Agent|3a 20|Mozilla/3.0 (compatible|3b 20|Indy Library)";
    http.header_names;
    content:!"Referer";
    reference:md5,b67e23e4a0248c71b71e73e37d52c906;
    classtype:command-and-control;
    sid:2018654; rev:5;
    metadata:created_at 2014_07_08, signature_severity Major, updated_at 2020_09_24;
)

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