WinReanimator is the the latest rogue anti-spyware software. It is installed on your computer by trojan Virtumonde (Virtumon, Vundo). It shows fake alerts like: "Windows has detected spyware infection! It is recomended to use special antispyware tools to prevent data loss. Windows will now download and install the most up-to-date antispyware for you. Click here to protect your computer from spyware!" It will lead you to www.winreanimator.com where you will be forced to purchase fake software. Do not buy this software and remove it from your computer with real anti-spyware software.

VirtuMonde is an internet adware program. Once VirtuMonde is on your computer it monitors your browsing habits and fetches targeted advertisements which become visible on your computer. VirtuMonde is reported to record your keystrokes and display random advertisements. VirtuMonde Spyware will create a DLL so as to record your keystrokes and conveys the data back to the parent website. Virtumonde is also known as Virtumon, Virtumondo, Virtumonde.C, WinFixer.

source: http://www.removevirtumonde.com - VirtuMonde removal guide