That is Avast anti rootkit and has not been updated for at least a year
Download
aswMBR.exe ( 4.5mb ) to your desktop.
Double click the aswMBR.exe to run it.
You may be offered the option of using virtualisation, accept that
When it offers to download the virus database allow that as well
Click the "Scan" button to start scan
On completion of the scan click save log, save it to your desktop and post in your next reply