ET MALWARE Possible Zeus P2P Variant DGA NXDOMAIN Responses July 11 2014

Query · suricata

byte_test:1,&,128,2;
byte_test:1,&,1,3;
byte_test:1,&,2,3;
content:"|00 01 00 00 00 01|"; offset:4; depth:6;
pcre:"/^..[\x0d-\x20](?=\d{0,27}[a-z])(?=[a-z]{0,27}\d)[a-z0-9]{21,28}(?:\x03(?:biz|com|net|org))\x00\x00\x01\x00\x01/Rs";
threshold:type both, track by_dst, count 12, seconds 120;
Raw source ET MALWARE Possible Zeus P2P Variant DGA NXDOMAIN Responses July 11 2014 · Suricata
Esc
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 Possible Zeus P2P Variant DGA NXDOMAIN Responses July 11 2014";
    byte_test:1,&,128,2;
    byte_test:1,&,1,3;
    byte_test:1,&,2,3;
    content:"|00 01 00 00 00 01|"; offset:4; depth:6;
    pcre:"/^..[\x0d-\x20](?=\d{0,27}[a-z])(?=[a-z]{0,27}\d)[a-z0-9]{21,28}(?:\x03(?:biz|com|net|org))\x00\x00\x01\x00\x01/Rs";
    threshold:type both, track by_dst, count 12, seconds 120;
    reference:url,blog.malcovery.com/blog/breaking-gameover-zeus-returns;
    reference:md5,5e5e46145409fb4a5c8a004217eef836;
    classtype:trojan-activity;
    sid:2018666; rev:4;
    metadata:created_at 2014_07_11, confidence Medium, signature_severity Major, updated_at 2019_07_26;
)

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