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Microsoft Security Intelligence
Published May 23, 2008 | Updated Sep 15, 2017

Trojan:Win32/Vundo.gen!F

Detected by Microsoft Defender Antivirus

Aliases: Trojan.Vundo (Symantec) Troj/Virtum-Gen (Sophos) MemScan:Trojan.Vundo.ENF (BitDefender)

Summary

Win32/Vundo is a multiple-component family of programs that deliver 'out of context' pop-up advertisements. They may also download and execute arbitrary files.
 
Trojan:Win32/Vundo.gen!F is often distributed as a DLL file and installed on an affected machine as a Browser Helper Object (BHO) without a user's consent. This family uses advanced defensive and stealth techniques to escape detection and to hinder removal.
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.
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