This type of scam has been going on for a while. Someone tried to hit our firm with it last year. The Virginia Bar posted a warning about it in 2009.
My boss decided to screw with the guy for a while thinking that he might be able to get enough information for the US Attorney’s office to take an interest. They sent what purported to be a Cashier’s check to our office. We took it to the supposed issuing bank who confirmed it was a fake. We strung along the scammer for a while while he demanded the funds before stating it was a fake and letting him know it was referred to the authorities. Sadly, the US Attorney’s office wasn’t too interested in pursuing it especially since the firm hadn’t suffered any losses.