_isreg32.dll is a library file that is responsible for implementing main parasite functions and running its destructive payload. The _isreg32.dll file cannot run by itself and therefore needs to be loaded with the help of some executable files. However, certain parasites reconfigures the operating system or installs _isreg32.dll as a plugin, so that the system or certain applications automatically load it on startup.
The _isreg32.dll file is installed and used by WinWhatWhere.
You have to delete the _isreg32.dll file immediately after you have found it. The parasite will continue to violate your privacy and harm your computer unless _isreg32.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 _isreg32.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 _isreg32.dll file using you regular spyware remover or antivirus program.
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