Just bear in mind that many trojans / ransomware will deliberately lie dormant for several days, weeks or months.If you have to use windows, then run anything you are suspicious of in https://www.sandboxie.com/, as this only enables it to access what is in the sandbox rather than your machine at large.
It works fine for most people. Converted a few over using Ubuntu and Mint.
Just bear in mind that many trojans / ransomware will deliberately lie dormant for several days, weeks or months.
So just because your sandbox doesn't catch fire in front of your eyes doesn't mean that anything that was run there is not dangerous.