ET ATTACK_RESPONSE MySQL User Account Enumeration

Query · suricata

flow:from_server,established;
content:"|02|"; offset:3; depth:4;
content:"|15 04|Access denied for user"; fast_pattern;
threshold:type both,track by_dst,count 10,seconds 1;
Raw source ET ATTACK_RESPONSE MySQL User Account Enumeration · 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 tcp $SQL_SERVERS 3306 -> $EXTERNAL_NET any (
    msg:"ET ATTACK_RESPONSE MySQL User Account Enumeration";
    flow:from_server,established;
    content:"|02|"; offset:3; depth:4;
    content:"|15 04|Access denied for user"; fast_pattern;
    threshold:type both,track by_dst,count 10,seconds 1;
    reference:url,seclists.org/fulldisclosure/2012/Dec/att-9/;
    classtype:protocol-command-decode;
    sid:2015993; rev:3;
    metadata:created_at 2012_12_06, signature_severity Minor, updated_at 2019_10_08;
)

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