OfferBox can be removed first by stopping its processes (OfferBox.exe) and then kill its files by using Emsisoft HiJackFree. Then the user has to remove all the related files and folder. Finally, restore the registry entries added and modified by OfferBox (Read the removal guide below to remove OfferBox successfully).
OfferBox should be removed immediately!
Removal Guide
Kill Process
(How to kill a process effectively?)
offerbox.exe
Delete Registry
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run "[random]" "offerbox.exe"
Remove Folders and Files
C:\Program Files\OfferBox