ET MALWARE Anchor_DNS Trickbot DNS CnC Command - Sending Data

Query · suricata

content:"|00 00 00 00 00 00 3f 38 39|"; fast_pattern;
dns.query;
content:"89"; depth:2;
pcre:"/^[a-fA-F0-9]{61}\.[a-fA-F0-9]{63}\.[a-fA-F0-9]{63}\./R";
Raw source ET MALWARE Anchor_DNS Trickbot DNS CnC Command - Sending Data · 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 Anchor_DNS Trickbot DNS CnC Command - Sending Data";
    content:"|00 00 00 00 00 00 3f 38 39|"; fast_pattern;
    dns.query;
    content:"89"; depth:2;
    pcre:"/^[a-fA-F0-9]{61}\.[a-fA-F0-9]{63}\.[a-fA-F0-9]{63}\./R";
    reference:md5,130392209b8b1e4aa37fd5c8da8fa6d5;
    reference:url,technical.nttsecurity.com/post/102fsp2/trickbot-variant-anchor-dns-communicating-over-dns;
    classtype:command-and-control;
    sid:2028880; rev:3;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2019_10_18, deployment Perimeter, malware_family TrickBot, confidence Medium, signature_severity Major, tag Trickbot, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_04_15;
)

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