ET EXPLOIT_KIT Evil Redirector Leading to EK Apr 28 2016

Query · suricata

flow:established,from_server;
file_data;
content:"|3d 22 5c 78 32|";
content:"|3d 22 5c 78 36|";
content:"|3d 22 5c 78 37|"; fast_pattern;
content:"</span>";
content:!"<span>"; distance:-500; within:500;
pcre:"/^\s*?<script>\s*?(?:[A-Za-z][A-Za-z\d+]+\s*?\+?=\s*(?:[A-Za-z][A-Za-z\d]+|[\x22\x27]\\x[2-7][0-9a-fA-F](?:\\x[2-7][0-9a-fA-F]){0,4}[\x22\x27])\s*?\x3b){20}/Rs";
Raw source ET EXPLOIT_KIT Evil Redirector Leading to EK Apr 28 2016 · Suricata
Esc
Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert http $EXTERNAL_NET any -> $HOME_NET any (
    msg:"ET EXPLOIT_KIT Evil Redirector Leading to EK Apr 28 2016";
    flow:established,from_server;
    file_data;
    content:"|3d 22 5c 78 32|";
    content:"|3d 22 5c 78 36|";
    content:"|3d 22 5c 78 37|"; fast_pattern;
    content:"</span>";
    content:!"<span>"; distance:-500; within:500;
    pcre:"/^\s*?<script>\s*?(?:[A-Za-z][A-Za-z\d+]+\s*?\+?=\s*(?:[A-Za-z][A-Za-z\d]+|[\x22\x27]\\x[2-7][0-9a-fA-F](?:\\x[2-7][0-9a-fA-F]){0,4}[\x22\x27])\s*?\x3b){20}/Rs";
    reference:url,researchcenter.paloaltonetworks.com/2016/03/unit42-campaign-evolution-darkleech-to-pseudo-darkleech-and-beyond/;
    classtype:exploit-kit;
    sid:2022772; rev:4;
    metadata:affected_product Web_Browsers, attack_target Client_Endpoint, created_at 2016_04_28, deployment Perimeter, confidence High, signature_severity Major, tag Redirector, updated_at 2019_10_08;
)

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