ET POLICY TeamViewer Keep-alive inbound

Query · suricata

flow:established,to_client;
dsize:5;
content:"|17 24 1B 00 00|";
flowbits:isset,ET.teamviewerkeepaliveout;
threshold:type limit, count 1, seconds 120, track by_src;

Rule dependencies

⚠ Higher-order rule. It fires on other rules' alerts, not on raw events, so it cannot fire on its own. Deploy the rules it depends on too.

Depends on

Raw source ET POLICY TeamViewer Keep-alive inbound · 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 5938 -> $HOME_NET any (
    msg:"ET POLICY TeamViewer Keep-alive inbound";
    flow:established,to_client;
    dsize:5;
    content:"|17 24 1B 00 00|";
    flowbits:isset,ET.teamviewerkeepaliveout;
    threshold:type limit, count 1, seconds 120, track by_src;
    reference:url,www.teamviewer.com;
    reference:url,en.wikipedia.org/wiki/TeamViewer;
    classtype:misc-activity;
    sid:2008795; rev:4;
    metadata:created_at 2010_07_30, signature_severity Unknown, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_07_26;
)

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