AdwCleaner and Junkware Removal Tool can also do a good job. I don't suppose you recently installed anything by Elaboratebytes? One of its advertising partners does a driveby install whether or not you tick the "yes, I really want this junk" box.
The company behind WebGet has around 100 variations of the same product, with name and code variations to try to avoid detection by anti-malware products. One installer trick is to offer "standard" and "custom" installations; only "custom" has the option to deselect the adware/malware payload (and may ignore your choice, anyway).