Suspicious Workstation Locking via Rundll32

Detects a suspicious call to the user32.dll function that locks the user workstation

Detection logic

Detection requirements

Log source product: windows
Log source category: process_creation

Known benign triggers

Scripts or links on the user desktop used to lock the workstation instead of Windows+L or the menu option

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
app.any.run/tasks/2aef9c63-f944-4763-b3ef-81eee209d128/	Sandbox submission	Only this detection cites it

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Detection rules

Suspicious Workstation Locking via Rundll32

Detection logic

Detection requirements

Known benign triggers

MITRE ATT&CK mappings

References

From the source

Licence

Authorship

Detection rules