ET MALWARE Suspected fraud-bridge DNS Tunnel

Query · suricata

threshold:type both, track by_src, count 60, seconds 10;
dns.query;
content:"AAAA--.";
pcre:"/^[A-Za-z0-9\/\-\+]{10,}AAAA--\./s";
Raw source ET MALWARE Suspected fraud-bridge DNS Tunnel · 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 MALWARE Suspected fraud-bridge DNS Tunnel";
    threshold:type both, track by_src, count 60, seconds 10;
    dns.query;
    content:"AAAA--.";
    pcre:"/^[A-Za-z0-9\/\-\+]{10,}AAAA--\./s";
    classtype:trojan-activity;
    sid:2026418; rev:2;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2018_09_26, deployment Perimeter, malware_family fraud_bridge, performance_impact Moderate, confidence Medium, signature_severity Major, updated_at 2020_08_25;
)

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