What is it? Seems to grow out of some wooden areas in the room. I've tried peroxide and bleach. Would a steamer help? Sorry in advance for the bad picture quality.
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Well, it's definitely mold.
That is super weird mold, if it is one.
There really isn't much of a nutrient source, it's growing on a clear coat and it's sporadic. If it was one big spot or a continuous line, that would make more sense to me.
The picture makes it look like a somewhat clean and dry environment as well.
My guess is some kind of chemical reaction, but that is probably wrong.