To get the ball rolling... Lots of possibilities for this

It is essentially a popular way of expressing "money launderer" and not only specific to "cyberspace" Geld"waescher" is more the "launderer" and the "bote" a "courier" running errands. There could be a more specific term of which I am not personally aware of that only pertains to the cyberspace/virtual world!

"Typically, a remitter receives money from a customer to send to a designated location. Legitimate remitters primarily serve recent immigrants in the United States, who do not have access to bank accounts and who use the remitter to send money home to family members. The early investigations revealed that the industry in New York had been largely transformed by narcotics traffickers into a vehicle for sending drug proceeds to drug source countries, primarily Colombia. Drug money was delivered to the money remitter, deposited into bank accounts, broken down into amounts less than $1,000 (commonly referred to as ”structuring”) to avoid currency reporting requirements, and then wire-transferred abroad. The investigation revealed that the remitters, in order to conceal the drug source of the funds, were routinely creating false documentation to make it appear as if the immigrants were merely sending money to family members."

http://www.ice.gov/pi/news/newsreleases/articles/070207ny.ht...