ProgramModification:Sometimes,notonlyvirusBackdoor:Win32/Death.BormalwareQuuSoftSystemCarebutalsocommonsoftwarespossessingtheabilitytomodifytheinnerfunctionsofhpzppw72.dll,whichmeansotherprogramscan'tfindthisDLLfileagain.

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Program Modification: Sometimes, not only virus Backdoor:Win32/Death.B or malware QuuSoft System Care but also common softwares possessing the ability to modify the inner functions of hpzppw72.dll, which means other programs can't find this DLL file again.