This is a total yawn, and the norm. It looks coordinated because the team who focuses specifically on telecoms had their tools burned. Pick pretty much any sector of interest and the intelligence services of the top 50 countries all have a team dedicated to hacking it. The majority of them are successful.

Sadly even most people in security are woefully unaware of the scope and scale of these operations, even within the networks they are responsible for.

The "noise" here was not from the attacker. They don't want to get caught. But sometimes mistakes happen.