Windows Security Auditing: Scheduled Task Run Program Ended (Event ID 4689)

Windows Security Auditing: Scheduled Task Run Program Ended (Event ID 4689)

In Windows security auditing, Event ID 4689 is generated when a scheduled task completes running a program. This event is crucial in monitoring and identifying potential security threats, as well as understanding the behavior of scheduled tasks in your environment. This article will provide a detailed overview of the 4689 event, its key concepts, and subtopics.

Understanding Event ID 4689

Event ID 4689 is a part of the Windows Security-Auditing category, with a task of 13313 and keywords of 9007199254740992. This event is generated when a scheduled task completes running a program or a script. The event details include information about the task, the user account associated with the task, the program or script that was executed, and the exit code of the executed program or script.

Key Concepts

• Scheduled Task: A scheduled task is a pre-configured action or a series of actions that are executed automatically at a specified time or in response to a specific event.
• Program or Script: A program or script is a set of instructions that are executed by the operating system or an application.
• Exit Code: An exit code is a value returned by a program or script upon completion. A non-zero exit code usually indicates that the program or script encountered an error.

Interpreting Event ID 4689

To interpret Event ID 4689, you need to understand the information provided in the event details. The event details include the following information:

• Task Name: The name of the scheduled task that executed the program or script.
• Task Category: The category of the scheduled task.
• User Name: The name of the user account associated with the scheduled task.
• Operational Image: The name of the program or script that was executed.
• Exit Code: The exit code returned by the program or script upon completion.

Analyzing Event ID 4689

To analyze Event ID 4689, you need to monitor the frequency and pattern of the events, as well as the exit codes returned by the executed programs or scripts. A sudden increase in the frequency of the events, or the execution of programs or scripts with non-zero exit codes, may indicate a potential security threat. In such cases, further investigation is required to identify and mitigate the threat.

Mitigating Risks Associated with Event ID 4689

To mitigate the risks associated with Event ID 4689, you can implement the following measures:

• Regularly review and monitor Event ID 4689 events.
• Implement strict access control policies for scheduled tasks and the associated user accounts.
• Regularly update and patch the programs and scripts executed by the scheduled tasks.
• Implement a security information and event management (SIEM) system to correlate and analyze Event ID 4689 events with other security events.

References

• Microsoft Documentation: Event 4689
• Ultimate Windows Security: Event ID 4689
• Varonis: What is Windows Event ID 4689?