Yep, it (along with a few other similar images) is a promo still from the first AVP. It must have caught on the way it did because it was likely one of the first officially released, high res stills of an Alien released on the internet but... God, it's the AVP design and just shouldn't be plastered literally everywhere
. I'm not even knocking the design overall, in its brown shade it worked really well in Resurrection
, but the fact that it is just now considered the default, go-to Alien image?
There were a handful of artists in the 40th Anniversary art book that traced/copied/whatever that still, and every one of them cited Giger as their inspiration, and every time I saw that I just had to roll my eyes.