Biographers like Kershaw, Fest, Bullock etc does not mention Hitler and/or other high ranking nazi's knowing about the song, or their reaction to it. Speer doesn't mention it in his memoars, it's not mentioned in Hitler's tabletalks (I doubt Hitler would've monologed about the song were he aware of it though) and Goebbels doesn't mention it in his diary.

I'm not aware of any sources describing Hitler or any high ranking nazi's reacting to the song.