Found these two forks which are still accessible (and are supposedly up to date with the upstream repo (linked in the comment above) which is not accessible anymore):

https://github.com/bb33bb/getsymbol

https://github.com/clayne/win-getsymbol

here is the same link as in the comment above from one of the forks:

https://github.com/bb33bb/getsymbol/blob/main/GetSymbol/CMai...

the code fetches from `UPDATE_CHECK_URL`, which is hardcoded as:

https://dbgsymbol.com/version

which as of the time of this posting, returns:

"GetSymbol 2.0.3|https://dbgsymbol.com/downloads/2.0.3/GetSymbol.exe"

the GetSymbol.exe file (which is downloadable right now) being presumably the infected file being discussed..!