ET MALWARE Linux/Onimiki DNS trojan activity long format (Inbound)

Query · suricata

byte_test:1,!&,128,2;
content:"|00 01 00 00 00 00 00 00 38|"; offset:4; depth:9;
pcre:"/^[a-z0-9]{23}[a-f0-9]{33}.[a-z0-9\-_]+.[a-z0-9\-_]+\x00\x00\x01\x00\x01/Rsi";
Raw source ET MALWARE Linux/Onimiki DNS trojan activity long format (Inbound) · Suricata
Esc
Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert udp $EXTERNAL_NET any -> $HOME_NET 53 (
    msg:"ET MALWARE Linux/Onimiki DNS trojan activity long format (Inbound)";
    byte_test:1,!&,128,2;
    content:"|00 01 00 00 00 00 00 00 38|"; offset:4; depth:9;
    pcre:"/^[a-z0-9]{23}[a-f0-9]{33}.[a-z0-9\-_]+.[a-z0-9\-_]+\x00\x00\x01\x00\x01/Rsi";
    reference:url,www.welivesecurity.com/wp-content/uploads/2014/03/operation_windigo.pdf;
    reference:url,github.com/eset/malware-ioc;
    classtype:trojan-activity;
    sid:2018276; rev:6;
    metadata:created_at 2014_03_14, confidence Medium, signature_severity Major, updated_at 2019_07_26;
)

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