ET EXPLOIT DNS Change Attempt (Unknown Device)

Query · suricata

flow:established,to_server;
http.method;
content:"POST";
http.uri;
content:"/advWAN.cgi"; startswith;
http.request_body;
content:"tAction=editApply";
content:"viewPage=multiWANCfg";
content:"action=edit";
content:"dns1=";
content:"dns2=";
Raw source ET EXPLOIT DNS Change Attempt (Unknown Device) · Suricata
Esc
Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert http any any -> $HOME_NET any (
    msg:"ET EXPLOIT DNS Change Attempt (Unknown Device)";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri;
    content:"/advWAN.cgi"; startswith;
    http.request_body;
    content:"tAction=editApply";
    content:"viewPage=multiWANCfg";
    content:"action=edit";
    content:"dns1=";
    content:"dns2=";
    reference:url,cujo.com/dns-hijacking-attacks-on-home-routers-in-brazil/;
    classtype:attempted-admin;
    sid:2031804; rev:1;
    metadata:affected_product Router, attack_target Networking_Equipment, created_at 2021_03_03, deployment Internal, performance_impact Low, confidence Medium, signature_severity Major, tag DNS_Hijack, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_03_03;
)

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