Pando.exe isn’t inherently bad and is a valid way for a company offering free or discounted software or media to save some money in operating costs.
I did some googling around and found this article: (Pandoexe).aspx Taken from the article: 'Is Pando.exe Bad? I was a bit skeptical, but since I really want to play the game again, I accepted it. So I just started installing LoL again, and I noticed that it needed me to install something called the Pando Media Booster (PMB) in order to continue my installation.