" script kiddies start with a vulnerability and try to find sites vulnerable to it. it's not about the skill involved in making the exploit, it's about the effort around that."

The terms get clouded a bit - but in my definition a "script kiddie" is pretty much this: someone with not much skill(like a kid), but hands on some hacker tools/scripts - to find easy targets and feel powerful. And later on, try to make some money.

And they can make great effort in doing so - but they remain script kiddies. They don't really know how to hack.

Whether this was just a "script kiddie", I doubt. More a professional ransomware gang. But what op probably meant was, it was not a targeted attack.