Created the Monday 18 March 2019. Updated 2 months, 1 week ago.
This is typical timing function which is used to measure time needed to execute some function/instruction set. If the difference is more than fixed threshold, the process exits.
GetTickCount reads from the
KUSER_SHARED_DATA page. This page is mapped read-only into the user mode range of the virtual address and read-write in the kernel range. The system clock tick updates the system time, which is stored directly in this page.
ZwGetTickCount is used the same way as
KiGetTickCount is faster than calling
ZwGetTickCount, but slightly slower than reading from the
KUSER_SHARED_DATA page directly.
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.
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.