Severe Detected with Windows Defender Antivirus
Aliases: Win32/Koobface!generic (CA) W32/Koobfa-Gen (Sophos)
Worm:Win32/Koobface.gen!F is generic detection for variants of Win32/Koobface, a multi-component family of malware used to compromise machines and direct them in various ways at the attacker's will. This could include using the affected machine to distribute additional malware, generate 'pay per click' advertising revenue, steal sensitive data, break captchas, and subvert the affected user's online experience. Its components are varied, but include a worm that spreads by utilizing social networking sites such as Facebook and MySpace.
Manual removal is not recommended for this threat. Use Microsoft Security Essentials or another up-to-date scanning and removal tool to detect and remove this threat and other unwanted software from your computer. For more information on Microsoft security products, see http://www.microsoft.com/protect/products/computer/default.mspx.