It looks like this might be provided by "Arm64X", which does seem to encode the dual-arch nature at the binary level: https://learn.microsoft.com/en-us/windows/

It looks like this might be provided by "Arm64X", which does seem to encode the dual-arch nature at the binary level: https://learn.microsoft.com/en-us/windows/arm/arm64x-pe https://learn.microsoft.com/en-us/windows/arm/arm64x-pe