This is an article about one of the worst forms of computer viruses to spread lately. Mutating ones. Ones that anti-virus programs are not able to detect and even if so, cannot continuously detect. Read into the article, your VM will never be infected as the virus refuses to execute on a VM. Its writers know that its useless as people can just throw the VM away or roll back to a snapshot. The virus was programmed to refuse to have it run there.
VMware should pay these guys for the PR and the security market validation :)