Install Mac OS on VirtualBox

Download macOSMojave10.14.6.iso
Create virtualmachine, with name osx

Now

VBoxManage modifyvm "osx" --cpuidset 00000001 000106e5 00100800 0098e3fd bfebfbff
VBoxManage setextradata "osx" "VBoxInternal/Devices/efi/0/Config/DmiSystemProduct" "iMac11,3"
VBoxManage setextradata "osx" "VBoxInternal/Devices/efi/0/Config/DmiSystemVersion" "1.0"
VBoxManage setextradata "osx" "VBoxInternal/Devices/efi/0/Config/DmiBoardProduct" "Iloveapple"
VBoxManage setextradata "osx" "VBoxInternal/Devices/smc/0/Config/DeviceKey" "ourhardworkbythesewordsguardedpleasedontsteal(c)AppleComputerInc"
VBoxManage setextradata "osx" "VBoxInternal/Devices/smc/0/Config/GetKeyFromRealSMC" 1

For AMD also add:

VBoxManage modifyvm "osx" --cpu-profile "Intel Core i7-6700K"

Go to disk utility, Select hard driv, erase