ET INFO TLS Handshake Failure

Query · suricata

flow:established,to_client;
dsize:7;
content:"|15|"; depth:1;
content:"|00 02 02 28|"; distance:2; within:4; fast_pattern;
Raw source ET INFO TLS Handshake Failure · 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 tls $EXTERNAL_NET any -> $HOME_NET any (
    msg:"ET INFO TLS Handshake Failure";
    flow:established,to_client;
    dsize:7;
    content:"|15|"; depth:1;
    content:"|00 02 02 28|"; distance:2; within:4; fast_pattern;
    classtype:bad-unknown;
    sid:2029340; rev:2;
    metadata:attack_target Client_Endpoint, created_at 2020_01_30, deployment Perimeter, confidence High, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_01_30;
)

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