Created the Monday 05 October 2020. Updated 6 months, 2 weeks ago.

One method that has been used to achieve process injection is by manipulating the User Data of a window object.

The User Data of a window is a small amount of memory that is usually used to store a pointer to a class object. This memory can be set using the SetWindowLongPtr API and the GWLP_USERDATA parameter. In the case of the Console Window Host (conhost) process, the User Data of a window is used to store the address of a data structure that contains information about the window's position, dimensions, and object handle, as well as a class object with methods to control the behavior of the console window.

By manipulating the User Data of a window object, it may be possible to execute arbitrary code in the context of the process associated with that window.

Featured Windows API's

Below, you will find a list of the most commonly used Windows API's that are currently utilized by malware authors for current evasion technique. This list is meant to provide an overview of the API's that are commonly used for this purpose. If there are any API's that you feel should be included on this list, please do not hesitate to contact us. We will be happy to update the list and provide any additional information or documentation that may be helpful.

Code Snippets

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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