Published Apr 26, 2010 | Updated Sep 15, 2017


Severe |Detected with Windows Defender Antivirus

Aliases: TR/Agent.116736 (Avira) Win32/Koobface.MF (CA) Trojan.Siggen1.9464 (Dr.Web) Net-Worm.Win32.Koobface.fwg (Kaspersky) W32/Koobface.GMY (Norman) Troj/KoobF-Gen (Sophos) WORM_KOOBFACE.IV (Trend Micro) Worm.Koobface.DUP (VirusBuster)


TrojanProxy:Win32/Koobface.gen!J is the generic detection for a DLL component of the Win32/Koobface family. It is installed as a system service and redirects the browser to an attacker-controlled server when certain legitimate Web sites are accessed.
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
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