I agree with Worstje!
I use Screenshot Captor for years on many PCs. My company even bought a company license for it to use it commercially legally.
NEVER EVER appeared any malware, virus, browser/DNS hijacking, install of any unwanted bloatware or whatever from Screenshot Captor.
Either you got an infected package from anywhere else or you had a virus/hijacker already before or after installing Screenshot Captor. I think, if you got your package from elsewhere and sent it to mouser (the author), he gladly will check the shitload of the infected package and try to stop the deployment of this bad package.
Sorry to hear about your bad experiences, but please don't blame the wrong (good) guy for something that another reason is responsible for.
Give SC another try on a clean machine (or vm) and you'll see you are wrong and blamed the innocent.