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    All Detections

    Connectivity Failures by Device

    GlassDiceBearhttps://www.dicebear.comhttps://creativecommons.org/publicdomain/zero/1.0/„Glass” (https://www.dicebear.com) by „DiceBear”, licensed under „CC0 1.0” (https://creativecommons.org/publicdomain/zero/1.0/)
    Azure Sentinel@AzureSentinel
    •updated Jun 17, 2025•0•38

    This query checks for network connection failures to Microsoft Defender for Endpoint URLs. The output includes any device with 1+ connectivity failures, a list of the domains they failed to connect to (including the number of failures), as well as the overall number of failures in the time period. Results are sorted by the total number of connection failures by the device.

    Microsoft Sentinel (KQL)

    Tags

    TA0005 - Defense EvasionT1584.008 - Network DevicesDS0029 - Network TrafficM1030 - Network SegmentationT1105 - Ingress Tool TransferT1570 - Lateral Tool TransferT1588.002 - ToolT1001 - Data ObfuscationT1001.003 - Protocol or Service ImpersonationT1001.002 - SteganographyT1573 - Encrypted ChannelT1573.001 - Symmetric CryptographyT1573.002 - Asymmetric CryptographyT1071 - Application Layer ProtocolT1095 - Non-Application Layer ProtocolT1071.003 - Mail ProtocolsT1090 - ProxyT1188 - Multi-hop ProxyT1090.001 - Internal ProxyT1562.004 - Disable or Modify System FirewallTA0042 - Resource DevelopmentTA0011 - Command and ControlTA0008 - Lateral MovementNetwork Connection OutboundWindowsWindows Defender Atpkqltactic:Misconfiguration

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