ET MALWARE [PTsecurity] JS.Trojan-Downloader.Nemucod.yo HTTP POST (:Exec:)

Query · suricata

flow:established, to_server;
threshold:type limit, track by_src, count 1, seconds 30;
http.request_body;
content:"|3a 3a 3a|Exec|3a 3a 3a|http"; depth:40; fast_pattern;
content:"|3a|//"; within:4;
content:".exe|3a 3a|"; within:100;
http.header_names;
content:!"Referer|0d 0a|";
Raw source ET MALWARE [PTsecurity] JS.Trojan-Downloader.Nemucod.yo HTTP POST (:Exec:) · 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 [PTsecurity] JS.Trojan-Downloader.Nemucod.yo HTTP POST (:Exec:)";
    flow:established, to_server;
    threshold:type limit, track by_src, count 1, seconds 30;
    http.request_body;
    content:"|3a 3a 3a|Exec|3a 3a 3a|http"; depth:40; fast_pattern;
    content:"|3a|//"; within:4;
    content:".exe|3a 3a|"; within:100;
    http.header_names;
    content:!"Referer|0d 0a|";
    classtype:trojan-activity;
    sid:2024701; rev:4;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2017_09_12, deployment Internet, malware_family Nemucod, performance_impact Moderate, confidence High, signature_severity Major, updated_at 2020_08_19;
)

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