System update virus?

I got a weird pop up today and I was hoping if someone could help me identify if it a virus or not. I tried to do a factory reset but I ended up re-installing all my old apps while rebooting the phone. Wondering if it was tied to an app or not.

I did a screenshot of the popup when it happened again.

http://ift.tt/2az3B5o

Thanks.

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System update virus?