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MediumSigmaHQ Pushkarev Dmitry

AppLocker Prevented Application or Script from Running

Detects when AppLocker prevents the execution of an Application, DLL, Script, MSI, or Packaged-App from running.

Detection logic

Detection requirements

Platform: ESXi Linux macOS Windows
The rule states no platform. This is derived from the 2 ATT&CK techniques it maps to.
Log source product: windows
Log source service: applocker

Known benign triggers

Unlikely, since this event notifies about blocked application execution. Tune your applocker rules to avoid blocking legitimate applications.

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
learn.microsoft.com/en-us/windows/security/application-security/application-control/windows-defender-application-control/applocker/using-event-viewer-with-applocker	Product documentation	6from 2 sources
learn.microsoft.com/en-us/windows/security/application-security/application-control/windows-defender-application-control/applocker/what-is-applocker	Product documentation	2
nxlog.co/documentation/nxlog-user-guide/applocker.html	Unclassified	Only this detection cites it

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