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I have Defo (Virus DEFO.MBR) virus in the MBR sector which Eset Antivirus can detect but its unable to clean even MBAM and Spybot are unable to find it. Any way that I can get rid of this?

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marked as duplicate by techie007, Dave M, Windos, Siim K, Tog Mar 11 '13 at 9:44

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There are a few ways to do this and I found a few sites that talk about this virus.

First off you might just need to rewrite the MBR from what I am reading about Defo but either way here are some links to remove this.

http://threatinfo.trendmicro.com/vinfo/virusencyclo/default5.asp?VName=DEFO.A-P&VSect=P

http://vil.nai.com/vil/content/v_160134.htm

http://support.microsoft.com/kb/122221

http://trinityhome.org/Home/index.php?wpid=1&front_id=12 <- if you want to scan the system for malware or viruses this is the best thing you can do and works wonders

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If it is a custom MBR like Dell, HP and others have, rewriting the MBR will Break advanced functionality like Factory restore and hardware diagnostics that are accessed during boot. –  Moab Jul 18 '10 at 3:40
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Make this F-Secure rescue CD, boot from it and clean the infected MBR

http://www.techmixer.com/free-f-secure-rescue-bootable-cd-to-clean-virus-and-malware/

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