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HighMicrosoft Sentinel analytics

StealthTalk - Password brute force

Identifies a brute-force authentication attempt against a single StealthTalk user account. The StealthTalk anti-brute-force subsystem emits a `MultiFailLogin` event when consecutive failed attempts trigger an…

Description

Identifies a brute-force authentication attempt against a single StealthTalk user account. The StealthTalk anti-brute-force subsystem emits a `MultiFailLogin` event when consecutive failed attempts trigger an automatic account lockout. This rule fires when the reported number of consecutive failures is 9 or more, distinguishing a credential-guessing attack from an isolated user error. The lockout duration (`LoginBlockingSeconds`) is surfaced as a custom detail so the SOC analyst can prioritise by attack persistence.

Detection logic

Detection requirements

Platform
ContainersESXiIaaSIdentity ProviderLinuxmacOSNetwork DevicesOffice SuiteSaaSWindows

The rule states no platform. This is derived from the ATT&CK technique it maps to.

Log source product
stealthtalkanomalousauth
Log source service
stealthtalkanomalousauth_cl

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