The correct sentence structure is "Wer hat gefragt?" Btw Although "Who asked you?" would b...

The correct sentence structure is "Wer hat gefragt?" Btw
Although "Who asked you?" would be "Wer hat dich gefragt?"
In my personal opinion "Hat dich (irgend)jemand/wer gefragt?" ("Did anyone ask you?") is more snarky though