virus probably modified the .exe registry setting to execute the virus instead of other programs - without a bat file fixing your .exe registry setting, you're in for a rough time.
I've pasted a small .bat entry that you can create in order to help combat the executable(s).
Copy it out into a notepad and save it as a .bat attempt to run this before clicking malwarebytes or whatever you wish to scan with.
Code:
Windows Registry Editor Version 5.00
[-HKEY_CURRENT_USER\Software\Classes\.exe\shell\open\command]
[-HKEY_CURRENT_USER\Software\Classes\secfile\shell\open\command]
[-HKEY_CLASSES_ROOT\.exe\shell\open\command]
[HKEY_CLASSES_ROOT\.exe]
@="exefile"
"Content Type"="application/x-msdownload"
[-HKEY_CLASSES_ROOT\secfile]