Process.MainModule --> "Access is denied"

I want to handle this differently, ie. determine if I have access or not.

Is it possible to see if you have access to the main module or not?

foreach (Process p in Process.GetProcesses())
        {
            try
            {
                //This throws error for some processes.
                if (p.MainModule.FileName.ToLower().EndsWith(ExeName, StringComparison.CurrentCultureIgnoreCase))
            {
                 //Do some stuff
            }

            }
            catch (Exception)
            {  
                //Acess denied 
            }
        }