F-secure has the best antivirus/anti-malware software available. I have been using it since rootkits became a threat. F-Secure had a free app that would detect and remove rootkits which is a step above technet’s Rootkit Revealer. F-Secure licensing is inexpensive and user friendly. They also have an online scanner that detects and removes threats and also will send samples back to the vendor.

You can find the online scanner here