Yeah, it can be done.
Basically you use the technique of money laundering. The money gets deposited into an account attached to the Fed wire system. You set up a whole bunch of accounts all over the world also attached to the Fed wiring system, and you may also make use of accounts in foreign countries held by disreputable individuals with banking connections who let you borrow their account for a percentage.
When everything is ready, you have the money wired into one of your accounts and then immediately upon arrival wire it in seperate accounts into a bunch of the others. As soon as gets into those you wire into a third set, and then a fourth and so on and so on. You can’t stop a paper trail from existing (or an electronic trail,) but what you can do is make one so long and obfuscated and requiring the cooperation of so much bureacracy that it is very difficult and time consuming to follow.
When the trail is long and convoluted enough that it will take a long time or forever to follow, you have all of the assets wired into a single account outside of a cooperative foreign bank in one of several countries. You are waiting at that bank. When the money comes in you make a cash withdrawal, and are gone long before the good guys can catch up to you.
There are some third parties that will do the laundering for you for a fee (50% or so) if you are willing to take a chance and have superior contacts that will give you a referral. If we’re talking about something like the Sniper ransom, you’re shit out of luck as these people would not wnat the attention that money from such a hot source would bring.
I feel comfortable explaining this, because if you attempt it in the manner I described you will surely fail, as I’ve left out two key elements.
In short, unless you have intimate knowledge and are experienced in International banking doctrine, and have the soul of a con man to boot it won’t work.
Even with all of these things, you’ll still need some luck.
Any other method is pretty much doomed to failure. Some people have suggested an ATM card. These transactions are often photographed and can be tracked. Most ATMs have a $500 limit. You have to go to an ATM a lot of times to get 10mm in $500 incremenmts. Each one of those gives the police a crack at your location. The law of averages makes it a certainty that luck will place a policeman close enough to one of those atms when you make a withdrawal that he can be alerted and you can be followed and arrested before you can get away with the money.
Any method that has you taking physical custody of the money is pretty much doomed to failure. Assuming you can use a gimmick and get away clean with the cash without getting caught you still have the problem of ensuring that the money is clean. You have to worry about a transmitter and markings, but more importantly you still have to worry even if the bills are completely clean and unmarked.
Nowadays they can simply record each and every unique serial number on each and every bill even if they’re used and nonconsecutive.
Not long after you spend one of those dollars it will work its way back to the Fed depository system where the number will be read electronically. As these dollars get spent they’ll be able to put together a pretty good picture of where you are and what you’re doing. and they’ll likely close in on you.
You could also attempt to take the money out of the country and deposit it into a third party bank where you could make use of the wire system to launder it as above, however you just can’t walk into a bank with a bag of money and then wire it out. In such circumstances there’s usually a several day delay while the authenticity of the currency is verified which will include an inquiry into the serial numbers. Assuming you find a cooperative backwater where that’s not an issue, you’re still no better off than if you had the money directly wired in the first place.
Hard commodities also represent difficulties too obvious to explain.
There are some other possibilities but all of these are much riskier than the laundering scenario.