ET DNS Query to a *.top domain - Likely Hostile

Query · suricata

threshold:type limit, track by_src, count 1, seconds 30;
dns.query;
content:".top"; nocase; endswith;
Raw source ET DNS Query to a *.top domain - Likely Hostile · Suricata
Esc
Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert dns $HOME_NET any -> any any (
    msg:"ET DNS Query to a *.top domain - Likely Hostile";
    threshold:type limit, track by_src, count 1, seconds 30;
    dns.query;
    content:".top"; nocase; endswith;
    reference:url,www.symantec.com/connect/blogs/shady-tld-research-gdn-and-our-2016-wrap;
    reference:url,www.spamhaus.org/statistics/tlds/;
    classtype:bad-unknown;
    sid:2023883; rev:4;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2017_02_07, deployment Perimeter, confidence Medium, signature_severity Major, updated_at 2020_09_15;
)

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