ET HUNTING Possible EXE Download From Suspicious TLD (.gdn) - set

Query · suricata

flow:established,to_server;
flowbits:set,ET.SuspExeTLDs;
flowbits:noalert;
http.host;
content:".gdn"; fast_pattern;
pcre:"/^(?:\x3a\d{1,5})?$/";

Rule dependencies

Feeds into

  • 1 rule read ET.SuspExeTLDs · view all
Raw source ET HUNTING Possible EXE Download From Suspicious TLD (.gdn) - set · Suricata
Esc
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 -> $EXTERNAL_NET any (
    msg:"ET HUNTING Possible EXE Download From Suspicious TLD (.gdn) - set";
    flow:established,to_server;
    flowbits:set,ET.SuspExeTLDs;
    flowbits:noalert;
    http.host;
    content:".gdn"; fast_pattern;
    pcre:"/^(?:\x3a\d{1,5})?$/";
    reference:url,www.spamhaus.org/statistics/tlds/;
    classtype:misc-activity;
    sid:2023458; rev:4;
    metadata:affected_product Any, attack_target Client_and_Server, created_at 2016_10_27, confidence Medium, signature_severity Minor, updated_at 2020_08_24;
)

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