RDTSC

The Read-Time-Stamp-Counter (RDTSC) instruction can be used by malware to determine how quicky the processor excutes the program’s instructions. It returns the count of the number of ticks since the last system reboot as a 64-bit value placed into EDX:EAX.

It will execute RDTSC twice and then calculate the difference between low order values and check it with CMP condition. If the difference lays below 0FFFh no debugger is found if it is above or equal then application is debugged.

U0126

Additional Resources

Subscribe to our Newsletter


The information entered into this form is mandatory. It will be subjected to computer processing. It is processed by computer in order to support our users and readers. The recipients of the data will be : contact@unprotect.it.

According to the Data Protection Act of January 6th, 1978, you have at any time, a right of access to and rectification of all of your personal data. If you wish to exercise this right and gain access to your personal data, please write to Thomas Roccia at contact@unprotect.it.

You may also oppose, for legitimate reasons, the processing of your personal data.