ET INFO IRC Nick change on non-standard port

Query · suricata

flow:to_server,established;
dsize:<64;
content:"NICK "; depth:5;
content:!"twitch.tv|0d 0a|";
Raw source ET INFO IRC Nick change on non-standard port · 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 any -> $EXTERNAL_NET !6666:7000 (
    msg:"ET INFO IRC Nick change on non-standard port";
    flow:to_server,established;
    dsize:<64;
    content:"NICK "; depth:5;
    content:!"twitch.tv|0d 0a|";
    classtype:misc-activity;
    sid:2000345; rev:17;
    metadata:created_at 2010_07_30, confidence High, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_11_28, reviewed_at 2024_09_16;
)

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