This is not just a problem in South Korea. I've found several spyware infestations lately masquerading as anti-spyware applications.
I have also found some of these bogus apps using the names of respectable software companies, though there is absolutely no relation between the companies and the "applications" in question.
(I have checked as closely as I can and am not using the names of the two companies at their requests while they try to clean up their reputations. I found it most interesting that neither of the companies deals in computer security in their regular business. I guess the fakers thought picking on these companies would give them some time before discovery.)
More about this later, as things develop.