How to remove this virus:

Step 1: Press CTRL+ALT+DEL (Task Manager Opens up) and go to the processes tab
Look for svchost.exe under the image name. There will be many but look for the ones which have your username under the username
Press DEL to kill these files. It will give you a warning, Press Yes
Repeat for more svchost.exe files with your username and repeat. Do not kill svchost.exe with system, local service or network service!

Step 2: Now open My Computer
In the address bar, type C:\heap41a and press enter. It is a hidden folder, and is not visible by default.
Delete all the files here

Step 3: Now go to Start –> Run and type Regedit
Go to the menu Edit –> Find
Type “heap41a” here and press enter. You will get something like this “[winlogon] C:\heap41a\svchost.exe C:\heap(some number)\std.txt”
Select that and Press DEL. It will ask “Are you sure you wanna delete this value”, click Yes. Now close the registry editor.
Now the virus is gone.

Step 4: Over to Pendrive:
But be sure to delete the autorun.inf file and any folder whose name ends with .exe in the pen drive. (thanks to Savita at Mozillazine)

Thats it...!