bho.dll is a library file that contains malicious code, which implements main parasite functions. This file usually needs to be loaded by executables or other pest files. However, some threats inject bho.dll in the system, so it works as an independent component, for example, as a harmful web browser plugin or hidden system service.
The bho.dll file is installed and used by adware Clearsearch, adware
WurldMedia, browser hijacker
iGetNet, browser hijacker
IncrediFind, adware
Msiebho, adware
PerfectNav, adware
SearchCentrix, adware
Adware.IEPageHelper.
You have to delete the bho.dll file immediately after you have found it. The parasite will continue to violate your privacy and harm your computer unless bho.dll and all related objects will not be completely removed from the system. If you have difficulties erasing the file consider using an anti-spyware program.
In some cases a presence of bho.dll does not mean that your system is infected. The file may actually belong to some fully legitimate applications and therefore must stay intact. If you are in doubt, please scan the bho.dll file using you regular spyware remover or antivirus program.