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Microsoft Security Intelligence
Published Jun 28, 2010 | Updated Nov 07, 2017

Backdoor:Win32/Qakbot.gen!arc

Detected by Microsoft Defender Antivirus

Aliases: Win32/Qakbot!Data (CA) Trojan.Win32.Bzud.a (Kaspersky) W32/Qbot.W.worm (Panda) Mal/QbotArc-A (Sophos) TROJ_BZUD.SM (Trend Micro)

Summary

Backdoor:Win32/Qakbot.gen!arc is a generic detection for an archive file that contains a copy of Backdoor:Win32/Qakbot.

Use the following free Microsoft software to detect and remove this threat:

You should also run a full scan. A full scan might find hidden malware. 

Use cloud protection 

Use cloud protection to help guard against the latest malware threats. It’s turned on by default for Microsoft Security Essentials and Microsoft Defender Antivirus for Windows 10. 

Go to Settings > Update & security > Windows Defender > Windows Defender Security Center > Virus & threat protection and make sure that your Cloud-based Protection settings is turned On

Get more help

You can also visit our advanced troubleshooting page or search the Microsoft virus and malware community for more help.

If you’re using Windows XP, see our Windows XP end of support page.

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