Malwarebytes Anti-Malware is a surprisingly effective freeware antimalware tool. It's a relatively speedy malware remover, with the quick scan taking about 8 minutes even with other high-resource programs running. The heuristics engine proved on multiple computers during empirical testing that it was capable of determining the difference between false positives and dangerous apps.

Overall, Malwarebytes is a very powerful tool for removing infectious malware programs. You may be asked to upgrade to a paid version that will include even more powerful features. However, the free version has been strong enough for me and have used it many, many times to remove malware on my customers computers.

Publishers Description:

Malwarebytes' Anti-Malware is a high performance anti-malware application that thoroughly removes even the most advanced malware and spyware. With one of the fastest, most effective quick scans and malware removal capabilities on the market, this program is the perfect addition to your PC's defenses.

The full version of the product includes a number of key features, including the ability to schedule updates and scans and most importantly, a real-time malware protection module that blocks malicious processes before they even start.

Version 1.34 includes a fix for removing Registry keys with corrupt permissions, improved removal of drivers, improved memory usage, and disinfection for USB-spread infections like Conficker.

MalwareBytes Malware Remover