Interrupts

Created the Monday 18 March 2019. Updated 1 month, 3 weeks ago.

Adversaries may use exception-based anti-debugging techniques to detect whether their code is being executed in a debugger. These techniques rely on the fact that most debuggers will trap exceptions and not immediately pass them to the process being debugged for handling.

By triggering an exception and checking whether it is handled properly, the adversary's code can determine whether it is being executed in a debugger and take appropriate action, such as exiting or altering its behavior. This can be achieved using interrupt instructions such as INT 3 or UD2 to trigger the exception. This technique can be used to evade detection and make reverse engineering more difficult.


Technique Identifier

U0106


Code Snippets

Detection Rules

Additional Resources

External Links

The resources provided below are associated links that will give you even more detailed information and research on current evasion technique. It is important to note that, while these resources may be helpful, it is important to exercise caution when following external links. As always, be careful when clicking on links from unknown sources, as they may lead to malicious content.

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