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Windows 7: Malwarebytes Update causes Massive false positives.


15 Apr 2013   #1
Phone Man

Windows 8.1 Pro w/Media Center 64bit, Windows 7 HP 64bit
 
 
Malwarebytes Update causes Massive false positives.

A definition update for Malwarebytes causes Trojan.Donloader.ED false positive on a massive amount of files that it can disable your system. It was corrected with new update. It hit me this afternoon and sure glad I had a recent Macrium Refresh image.


***False positive Trojan.Downloader.ED*** - Malwarebytes Forum

Jim


My System SpecsSystem Spec
.

15 Apr 2013   #2
bberkey1

Microsoft Windows 7 Professional 64-bit 7601 Multiprocessor Free Service Pack 1
 
 

So as long as I update as of now, this shouldn't be a problem then? If so I might had dodged a bullet as I was going to run a full scan when I went to bed
My System SpecsSystem Spec
16 Apr 2013   #3
Phone Man

Windows 8.1 Pro w/Media Center 64bit, Windows 7 HP 64bit
 
 

Quote   Quote: Originally Posted by bberkey1 View Post
So as long as I update as of now, this shouldn't be a problem then? If so I might had dodged a bullet as I was going to run a full scan when I went to bed
Your lucky, I was online and my Pro version runs a flash scan after each update. The latest update fixed the problem so you should be fine.

Jim
My System SpecsSystem Spec
.


16 Apr 2013   #4
bberkey1

Microsoft Windows 7 Professional 64-bit 7601 Multiprocessor Free Service Pack 1
 
 

Quote   Quote: Originally Posted by Phone Man View Post
Quote   Quote: Originally Posted by bberkey1 View Post
So as long as I update as of now, this shouldn't be a problem then? If so I might had dodged a bullet as I was going to run a full scan when I went to bed
Your lucky, I was online and my Pro version runs a flash scan after each update. The latest update fixed the problem so you should be fine.

Jim
Thanks for the heads up Phone Man
My System SpecsSystem Spec
16 Apr 2013   #5
COMPUTIAC

Windows 8.1.1 64bit
 
 

I got hit pretty good with this yesterday.
MBAM Pro went crazy all of a sudden, flashing warnings and quarantining files at a pace I never saw before.
It disabled security scanners, start button and more.
Managed to do a hard shutdown, restarting did nothing, could not start any programs at all, Win7 was DOA.
Another shutdown, did a system restore point and went back to what appears to be normal so far.
I disabled MBAM, then removed it with Revo, downloaded a new copy 3 hours later.
All files in quarantine would not restore, so had to look in sys32 and other places to be sure they were there, very time consuming.
After verifying everything, I deleted all from quarantine.

This shows the chaos : http://forums.malwarebytes.org/index...ic=125127&st=0
My System SpecsSystem Spec
16 Apr 2013   #6
HarryHusker

Windows 7 Ultimate 64bit SP-1
 
 

Wow, I was going to download and run MBAM yesterday on a different system but got distracted- sure am glad I didn't!
My System SpecsSystem Spec
16 Apr 2013   #7
Golden

Microsoft Community Contributor Award Recipient

Windows 7 Ult. x64 Windows 8.1 x64
 
 

Yikes! It looks like chaos......but strangely, I had no issues at all
My System SpecsSystem Spec
16 Apr 2013   #8
maxie

windows 7 home 64bit
 
 

No bother here either working fine On my Windows 8 system
My System SpecsSystem Spec
16 Apr 2013   #9
COMPUTIAC

Windows 8.1.1 64bit
 
 

Quote   Quote: Originally Posted by Golden View Post
Yikes! It looks like chaos......but strangely, I had no issues at all
Your very lucky.
There was one person who knew he would be going to face a mountain of disasters this morning as he had 600 machines which he believed were damaged by this. IT person I'm guessing.
Others were threatening law suits, some wanted monetary compensation.
I'm guessing today is a very busy day for a lot of people around the world.
My System SpecsSystem Spec
16 Apr 2013   #10
Golden

Microsoft Community Contributor Award Recipient

Windows 7 Ult. x64 Windows 8.1 x64
 
 

Quote:
The Enterprise version just knocked all the computers connected to this product out. Thank god were only evaluating it on a couple computers. Forefront may suck, but at least its not taking our systems out.
^ Off the Malwarebytes forum......they are going to have to work hard to regain some credibility it would appear. In the meantime, I'm taking the safe option and turning OFF automatic quarantining:

-capture.png

If your system is completely hosed as some are reporting, then this is apparently the fix:

http://forums.malwarebytes.org/index...owtopic=125137


My System SpecsSystem Spec
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 Malwarebytes Update causes Massive false positives.




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