Trend Labs shares an interesting PDF report on this topic:
QUOTE: Earlier today, we released the paper Russian Underground 101 which provides readers an overview of the Russian underground economy. The Russian underground is a key source for all sorts of illegal products and services used by criminals, which is ultimately aimed at users all over the world. By exploring underground resources, (visiting various underground forums) we were able to determine the products and services that are most commonly traded for, as well as the prices of these goods. This provides us with a good insight into the Russian underground ecosystem, information which can be used to provide enhanced protection for Trend Micro customers.