ET WEB_CLIENT Malicious iframe guessing router password 1

Query · suricata

flow:established,from_server;
file_data;
content:"dnsPrimary="; nocase; fast_pattern;
content:"dnsSecondary="; nocase;
content:"dnsDynamic="; nocase;
content:"dnsconfig.cgi"; nocase;
Raw source ET WEB_CLIENT Malicious iframe guessing router password 1 · 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 $EXTERNAL_NET any -> $HOME_NET any (
    msg:"ET WEB_CLIENT Malicious iframe guessing router password 1";
    flow:established,from_server;
    file_data;
    content:"dnsPrimary="; nocase; fast_pattern;
    content:"dnsSecondary="; nocase;
    content:"dnsDynamic="; nocase;
    content:"dnsconfig.cgi"; nocase;
    reference:url,securelist.com/blog/incidents/66358/web-based-attack-targeting-home-routers-the-brazilian-way/;
    classtype:attempted-user;
    sid:2019111; rev:4;
    metadata:affected_product Web_Browsers, affected_product Web_Browser_Plugins, attack_target Client_Endpoint, created_at 2014_09_04, deployment Perimeter, signature_severity Major, tag Web_Client_Attacks, updated_at 2019_10_08;
)

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