One way to do it is to just put those control circles around the sprite. You can do it with some math. Then when dragging one of them you can update the other ones, and the size of the sprite.
Anyways, here is a way to do it in a fairly compact amount of events:
https://www.construct.net/en/forum/construct-2/how-do-i-18/resize-handles-example-48892?kws=Resize
That is exacly what a need, friend.
Tnk you very much. Works perfect for my needs.