Sorry to hear you are having issues. No, Stardock's apps are not Malware. I am assuming you get the Object Desktop Package which come with variety of apps? If so, I would advice to take your time and install them one at a time. Reboot, retest your system, setup that application you just installed. See if there is a problem with your system. Learn how to use that application. Once you comfortable with that application, then move on to the next one. If you install all the application all in one go, it will be overwhelming to you. Also if you run into issues after curtain application get install, you can easily narrow down to that application and we can work together with you to iron out the issues.
Stardock Community Assistant.