This is a really hard image: it is (deliberately) underexposed and has some pretty unusual colors to it.

Here is the raw scan:

Here it is after the specks are removed (ICE-4, if you care for the name):

And if you now add the extension into shadows and highlights (the DEE tool) you can see this:

Another Nikon tool doesn't work so well (the scan image enhancer):

Toss them all together and there is some recovery