Entra ID Excessive Account Lockouts Detected

Description

Identifies a high count of failed Microsoft Entra ID sign-in attempts as the result of the target user account being locked out. Adversaries may attempt to brute-force user accounts by repeatedly trying to authenticate with incorrect credentials, leading to account lockouts by Entra ID Smart Lockout policies.

Detection logic

Its licence does not clear it for publishing here

Sunturai publishes a detection's own text where the licence it arrived under has been reviewed and permits it, and Elastic License 2.0 has not. The query as its source wrote it, its canonical form and the hash that pins this revision are in the workspace record.

Detection requirements

Platform: Containers ESXi IaaS Identity Provider Linux macOS Network Devices Office Suite SaaS Windows
The rule states no platform. This is derived from the ATT&CK technique it maps to.
Log source category: event_index

Known benign triggers

Automated processes that attempt to authenticate using expired credentials or have misconfigured authentication settings may lead to false positives.

References

Links the source published beside this detection. Reference is the link the source wrote, unmodified. Class is decided by this catalogue from the host and path, not stated by the source. Cited by counts published detections citing the same resource, including this one, and the sources beneath it count the repositories this catalogue ingests, which is not the same as independent research.
Reference	Class	Cited by
cloud.hacktricks.xyz/pentesting-cloud/azure-security/az-unauthenticated-enum-and-initial-entry/az-password-spraying	Unclassified	4
github.com/0xZDH/Omnispray	Tool	5
github.com/0xZDH/o365spray	Tool	6
learn.microsoft.com/en-us/entra/identity-platform/reference-error-codes	Product documentation	4
learn.microsoft.com/en-us/purview/audit-log-detailed-properties	Product documentation	5
learn.microsoft.com/en-us/security/operations/incident-response-playbook-password-spray	Product documentation	5
www.microsoft.com/en-us/security/blog/2025/05/27/new-russia-affiliated-actor-void-blizzard-targets-critical-sectors-for-espionage/	Threat report	7
www.sprocketsecurity.com/blog/exploring-modern-password-spraying	Unclassified	Only this detection cites it

Detection rules

Entra ID Excessive Account Lockouts Detected

Description

Detection logic

Detection requirements

Known benign triggers

MITRE ATT&CK mappings

References

From the source

Licence

Authorship

Detection rules