OpenCash is a Browser Helper Object (BHO) that has been deliberately added without your permission.  It might have infiltrated as part of a bundled free software package.  Regardless of how you got it, it is now time to get rid of it.
OpenCash will hurt the functionality of your computer and will slow your system down.  If you do not remove OpenCash from your computer it will continue to degrade your computer’s overall performance.  It is highly recommended that you use a trusted spyware remover such as Spyzooka so you can restore your computer to its original functionality.