Sticky key backdoor

Sticky key refers to a shortcut key in computer use, designed for people who have difficulty pressing two or more keys at the same time. The main function of sticky keys is to facilitate the use of Shift and other key combinations. For sticky keys, you can press one key position (such as shift) first, and then press another key position instead of pressing two keys at the same time, which is convenient for some people who cannot press multiple keys at the same time due to physical reasons. A normal computer will show a sticky key prompt when you press shift five times.
1: The location of the sticky key is
searched for sethc.exe in C:\Windows\System32\sethc.exe . If you delete it directly, you will be prompted that there is no permission.

2: Change the permission:
Right-click -> Properties -> Security -> Advanced

Edit in the owner The administrators

then edit the administrator permissions in the properties to be fully controllable.

At this time, you can delete sethc.exe
3: Copy cmd.exe under system32 and rename it to sethc.exe. Put it under system32 and

press the shift key five times to call cmd with system permission