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Published Jul 24, 2008 | Updated Sep 15, 2017

TrojanDownloader:Win32/Zlob.ZWU

Detected by Microsoft Defender Antivirus

Aliases: Puper (McAfee) Downloader.Zlob!gen.3 (Symantec) Trojan.Win32.Vapsup.gxx (Kaspersky) Trojan.Vapsup.H (BitDefender)

Summary

TrojanDownloader:Win32/Zlob.ZWU is a component of the greater Win32/Zlob malware family. Win32/Zlob refers to a large multi-component family of malware that modifies Internet Explorer's settings, alters and redirects the user's default Internet search page and home page, and attempts to download and execute arbitrary files (including additional malicious software). The Win32/Zlob family has also been associated with rogue security programs that display misleading warnings regarding bogus malware infections.
 
This particular component is installed as a DLL. This trojan may be distributed with other components such as Adware:Win32/Vapsup, Trojan:Win32/Zlob.gen!H and Trojan:Win32/Small.ZZB.
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 the Microsoft Safety Scanner (http://go.microsoft.com/fwlink/?LinkId=212742). For more information, see http://www.microsoft.com/protect/computer/viruses/vista.mspx.
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