My accountant got one of these. We called the bank that we were to transfer to the funds to and talked to their fraud department. They wouldn't/couldn't do much, but the account was clearly in control of the criminal. Too bad no one cares, because they leave a trail and could easily be caught.
Unfortunately, they absolutely can't do anything about it. There are an endless number of scenarios in which an attempted reverse transfer could be fraudulent. If you suffered a loss they want your bank to worry about it.
As for tracking them, it's not as simple as you probably believe. Opening a business checking account or personal checking account anonymously is a lot easier than you believe. Withdrawing 10-50k is also not as difficult as you might believe. Moving hundreds of thousands to millions might be present an issue. You might be able to get some money back if it's that high dollar, but if you sent it to a shady country you're screwed.