ET HUNTING Windows Commands and Variables in DNS Reply

Query · suricata

content:"|00 10 00 01|"; offset:2;
content:"|24|env|3a|"; fast_pattern;
content:"copy|20|";
content:"cd|20|";
Raw source ET HUNTING Windows Commands and Variables in DNS Reply · 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 dns any any -> $HOME_NET any (
    msg:"ET HUNTING Windows Commands and Variables in DNS Reply";
    content:"|00 10 00 01|"; offset:2;
    content:"|24|env|3a|"; fast_pattern;
    content:"copy|20|";
    content:"cd|20|";
    classtype:bad-unknown;
    sid:2038931; rev:1;
    metadata:attack_target Client_Endpoint, created_at 2022_09_22, deployment Perimeter, confidence High, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_09_22;
)

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