软件运行原理和此类软件的检测方案

//检查改变系统运行频率的函数如果返回结果为TRUE则频率已经被修改;

//本函数为C语言Windows驱动代码,其适用Windows xp至Windows11的全部Windows系统;

BOOLEAN IsTimeFunctionHooked()

{

PUCHAR pfnKeQueryPerformanceCounter = (PUCHAR)GetNtosFunctionAddress(L"KeQueryPerformanceCounter");

PUCHAR pfnKeUpdateSystemTime = (PUCHAR)GetNtosFunctionAddress(L"KeUpdateSystemTime");

if(pfnKeQueryPerformanceCounter && MmIsAddressValid(pfnKeQueryPerformanceCounter))

{

#ifdef AMD64

if(*pfnKeQueryPerformanceCounter==0xFF && *(pfnKeQueryPerformanceCounter+1)==0x25)

{

return TRUE;

}

#else

if(*pfnKeQueryPerformanceCounter==0xE9)

{

return TRUE;

}

#endif

}

if(pfnKeUpdateSystemTime && MmIsAddressValid(pfnKeUpdateSystemTime))

{

#ifdef AMD64

if(*pfnKeUpdateSystemTime==0xFF && *(pfnKeUpdateSystemTime+1)==0x25)

{

return TRUE;

}

#else

if(*pfnKeUpdateSystemTime==0xE9)

{

return TRUE;

}

#endif

}

return FALSE;

}