Could generating an enormous cloud of sand over Iraq be wiser than trying to use it as a direct-kill ASAT?
An orbital sandstorm could hide Iraq from satellite recon and, due to the velocities involved and sand getting into everything, could make the area a no-go area for satellites for awhile.
While there is a difference between directly targeting a satellite and blanketing an area with sand, I think we are still talking about a direct-kill weapon in the sense that you still know the trajectory of the satellite you want to hit in order to have an idea of where to aim. I think I'd also use ball berings instead of sand. The reason being that ball berings are bigger and heavier and will have a better chance of penetrating micrometeorite protection systems.