ET SCAN Behavioral Unusually fast Terminal Server Traffic Potential Scan or Infection (Outbound)

Query · suricata

flow:to_server;
flags:S,12;
threshold:type both, track by_src, count 20, seconds 360;
Raw source ET SCAN Behavioral Unusually fast Terminal Server Traffic Potential Scan or Infection (Outbound) · Suricata
Esc
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 3389 (
    msg:"ET SCAN Behavioral Unusually fast Terminal Server Traffic Potential Scan or Infection (Outbound)";
    flow:to_server;
    flags:S,12;
    threshold:type both, track by_src, count 20, seconds 360;
    reference:url,threatpost.com/en_us/blogs/new-worm-morto-using-rdp-infect-windows-pcs-082811;
    classtype:misc-activity;
    sid:2013479; rev:5;
    metadata:created_at 2011_08_29, confidence Medium, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_07_26;
)

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