ET MALWARE DNSMessenger Payload (TXT base64 gzip header)

Query · suricata

content:"|00 10 00 01|";
content:"H4sIA"; distance:7; within:5; fast_pattern;
Raw source ET MALWARE DNSMessenger Payload (TXT base64 gzip header) · 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 udp any 53 -> $HOME_NET any (
    msg:"ET MALWARE DNSMessenger Payload (TXT base64 gzip header)";
    content:"|00 10 00 01|";
    content:"H4sIA"; distance:7; within:5; fast_pattern;
    reference:url,blog.talosintelligence.com/2017/10/dnsmessenger-sec-campaign.html;
    classtype:trojan-activity;
    sid:2024840; rev:1;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2017_10_13, deployment Perimeter, malware_family DNSMessenger, performance_impact Moderate, confidence High, signature_severity Major, updated_at 2019_07_26;
)

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