HijackThis inspects a computer’s browser and operating system settings to generate a log file of its current state. It can selectively remove unwanted settings and files. Its main focus is on web browser hijacking. It is a freeware utility originally written by Merijn Bellekom but now distributed by Trend Micro.
For downloads and more information,
visit the HijackThis homepage.
Just for information:
There is a new version named: HiJackThis Fork v3: https://github.com/dragokas/hijackthis that supports all modern Windows versions.
It is recommended officially, see notice in: HiJackThis SourceForge repository of Trend Micro.
Good luck and thanks for the video, Stanislav.
The link page on TrendMicro is a not useful any longer. I looked around, and this page seems to be OK: https://esupport.trendmicro.com/en-us/home/pages/technical-support/1037994.aspx