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Microsoft Security Intelligence
Published Mar 25, 2011 | Updated Sep 15, 2017

TrojanDownloader:Win32/Chepvil.J

Detected by Microsoft Defender Antivirus

Aliases: W32/Oficla.DE (Command) TR/Dldr.Chepvil.J (Avira) Trojan-Downloader.Win32.Small.btcy (Kaspersky) Backdoor:Win32/Hostil.gen!A (other) Mal/Bredo-K (Sophos)

Summary

TrojanDownloader:Win32/Chepvil.J is a trojan that attempts to download other malware from a remote server. In the wild, we observed this trojan downloading files detected as Rogue:Win32/Winwebsec, Backdoor:Win32/Cycbot.B and VirTool:Win32/Injector.gen!BG.
To detect and remove this threat and other malicious software that may be installed on your computer, run a full-system scan with an appropriate, up-to-date, security solution. The following Microsoft products detect and remove this threat:
 
 
For more information on antivirus software, see http://www.microsoft.com/windows/antivirus-partners/.
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