There's no virus there. See, for example,

pyinstaller/pyinstaller#6754
https://stackoverflow.com/questions/43777106/program-made-with-pyinstaller-now-seen-as-a-trojan-horse-by-avg
https://coderslegacy.com/pyinstaller-exe-detected-as-virus-solutions/
https://medium.com/@markhank/how-to-stop-your-python-programs-being-seen-as-malware-bfd7eb407a7
https://plainenglish.io/blog/pyinstaller-exe-false-positive-trojan-virus-resolved-b33842bd3184

It's a known issue with pyinstaller, the tool I used to create the executable file (essentially a bundle of Python files). Some antivirus software, like Avast, mistakenly detects it as malware, resulting in a false positive.

In this case, instead of using the installer, you can follow the Readme on Github (https://github.com/hyperfield/yt-channel-downloader) to just run the native (non-packed) Python version of the code.

I have a plan to write a program in order to solve this issue, but that'll take some time.