[SOLVED] i7-9700k White stuff on back side

[Morning4231]

So I have been experiencing variety of issues with my pc.
Built a new one in April. Today my new mobo arrived and when I took out the cpu I saw this stuff on the backside. I dont think it's the paste since none if the sides have any on them. Any idea what this is? Do I need to rma

https://imgur.com/a/TBsQXHt

View: https://imgur.com/a/TBsQXHt

 

[richiestang_78]

Looks like paste to me. Try and use some rubbing alcohol and some Qtips.