ET SCAN Multiple MySQL Login Failures Possible Brute Force Attempt

Query · suricata

flow:from_server,established;
dsize:<251;
byte_test:1,<,0xfb,0,little;
content:"|ff 15 04 23 32 38 30 30 30|"; offset:4;
threshold:type threshold, track by_src, count 5, seconds 120;
Raw source ET SCAN Multiple MySQL Login Failures Possible Brute Force Attempt · 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 $HOME_NET 3306 -> $EXTERNAL_NET any (
    msg:"ET SCAN Multiple MySQL Login Failures Possible Brute Force Attempt";
    flow:from_server,established;
    dsize:<251;
    byte_test:1,<,0xfb,0,little;
    content:"|ff 15 04 23 32 38 30 30 30|"; offset:4;
    threshold:type threshold, track by_src, count 5, seconds 120;
    classtype:attempted-recon;
    sid:2010494; rev:4;
    metadata:created_at 2010_07_30, confidence Medium, signature_severity Informational, updated_at 2019_07_26;
)

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