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Microsoft Security Intelligence
Published Jul 26, 2010 | Updated Sep 15, 2017


Detected by Microsoft Defender Antivirus

Aliases: Worm:Win32/Vobfus.W (other) TR/Dldr.VB.wps (Avira) Trojan.Downloader.VB.WPO (BitDefender) Win32/Vobfus.FH (CA) Worm.Win32.VBNA.alpv (Kaspersky) Downloader-CJX.gen.g (McAfee) Mal/AutoRun-P (Sophos) WORM_VBNA.SM (Trend Micro) Worm.VBNA.Gen.3 (VirusBuster)


Worm:Win32/Vobfus.gen!B is a generic detection for obfuscated Visual Basic (VB) compiled malware that spreads via removable drives and downloads additional malware from remote servers.
Manual removal is not recommended for this threat. To detect and remove this threat and other malicious software that may have been installed, run a full-system scan with an up-to-date antivirus product such as Microsoft Security Essentials, or the Microsoft Safety Scanner. For more information about using antivirus software, see
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