Published Nov 18, 2010 | Updated Sep 15, 2017


Severe |Detected with Windows Defender Antivirus

Aliases: Net-Worm.Win32.Koobface.hba (Kaspersky) Worm.Koobface.FDU (VirusBuster) Worm/Koobface.hba (Avira) Win32/Koobface.WA (CA) Win32.HLLW.Facebook.900 (Dr.Web) Trojan-Proxy.Win32.Koobface (Ikarus) W32/!dll (McAfee) W32/Koobface.KG.worm (Panda) Net-Worm.Win32.Koobface (Sunbelt Software) W32.Koobface (Symantec) WORM_KOOBFACE.GL (Trend Micro)


TrojanProxy:Win32/Koobface.AL is a trojan that hijacks web search results. When users click on a result, they are diverted to a third-party search engine that may not display correct search results.
To detect and remove this threat and other malicious software that may be installed in your computer, run a full-system scan with an up-to-date antivirus product such as the following:
For more information on antivirus software, see
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