High count of failed logons by a user

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Identifies when 100 or more failed attempts by a given user in 10 minutes occur on the IIS Server. This could be indicative of attempted brute force based on known account information. This could also simply indicate a misconfigured service or device. References: IIS status code mapping - https://support.microsoft.com/help/943891/the-http-status-code-in-iis-7-0-iis-7-5-and-iis-8-0 Win32 Status code mapping - https://msdn.microsoft.com/library/cc231199.aspx

Attribute Value
Type Analytic Rule
Solution Standalone Content
ID 884c4957-70ea-4f57-80b9-1bca3890315b
Severity Medium
Kind Scheduled
Tactics CredentialAccess
Techniques T1110
Required Connectors AzureMonitor(IIS)
Source View on GitHub

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