GPL CHAT Yahoo IM successful chat join

Query · suricata

flow:from_server,established;
content:"YMSG"; depth:4; nocase;
content:"|00 98|"; depth:2; offset:10;
Raw source GPL CHAT Yahoo IM successful chat join · 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 $EXTERNAL_NET 5050 -> $HOME_NET any (
    msg:"GPL CHAT Yahoo IM successful chat join";
    flow:from_server,established;
    content:"YMSG"; depth:4; nocase;
    content:"|00 98|"; depth:2; offset:10;
    classtype:policy-violation;
    sid:2102458; rev:5;
    metadata:created_at 2010_09_23, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_07_26;
)

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