Who REALLY Bought all those Trucks for ISIS

In order to have a terrorist group, you need to have money. So who was giving ISIS money, and buying all their trucks this entire time?

Oh and, ISIS never attacked Israel, except for one time, and they apologized for it.
https://www.middleeastmonitor.com/20170429-israel-forgives-daesh-for-attack-following-apology/

Syria found Israeli made weapons in ISIS hideouts in 2017.
https://www.jpost.com/israel-news/syrian-army-finds-israeli-made-weapons-in-is-hideouts-507668