“Beware malware” is a friendly reminder to all, and one I should have given to myself when I attempted to download some software for my son yesterday. I was in too much of a hurry to be careful about what I was downloading.
I was after Kodu, the game programming tool. I now know that the file kodu-game-lab.exe is malware “which may bundle additional software offers including toolbars and browser extensions”. The quote is an understatement.
After some more careful Googling and downloading, my PC now seems returned to health. Thanks to Junkware Removal Tool!