That is not moire, nor is it noise...its posterization. This kind of thing is often the result of image processing and compression, and can be seen frequently in JPEG images less than around 90 quality that have areas of smooth gradient (like a sky.)
I can't be sure what causes that, however I do believe I remember seeing some threads in the past about similar problems with the 5D II as well. I noticed that you have High ISO speed NR enabled... You might want to disable that. You might also want to disable the CA correction. Those are all post-processing effects, and they may be affecting the saved image. I know the Image Quality EXIF value says "RAW", however I am suspicious it might actually be a native-size form of mRAW (a form of YCC encoding, and definitely not an actual RAW format.) To actually apply aberration, peripheral illumination correction, and noise reduction, the output image couldn't be in a true RAW format, and if the data is encoded in some form, then that could be the source of the posterization.