I thought it was just the Bangladeshi's incompetence.
But how did the malware get into the bank computers?
I would bet they were targeted by guys who had already hacked other banks.
Russian organized crime are powerful dude.
They have LOTS of money and resources and have deadly hackers.
Once they decide to target you your screwed.. bank or not.
Just google some variations on the keywords like, Russia Bank Hack
So i would be guessing it's the same people behind it as other banks already hacked before.
All kinds of weird stuff out there..
I had heard a couple years ago now that most bank ATM's around the world
are running a variant of Windows XP.. hell the White House was still using XP when Win8 came out.
And as a hacker / cracker you look for the weakest point in the system to exploit.