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Trojan Horses in HJT backup DLLs???

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#1 [ITA]mich



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Posted 26 June 2004 - 04:52 PM

I hope this is In Topic... if it is not please don't kill me... redirect me to the proper place :oops:

I just downloaded AVG Antivirus and performed a complete test of my machine.
I found some trojans (as I expected... I had no AntiVirus since I reformatted my PC a month ago) but then I found also an interesting thing...

In one of the backup DLL files of HJT AVG found (and healed fortunately!) Trojan Golid.B :eek: :eek: :eek:

How is that possible???

Bye and thanks in advance. :wave:

#2 dave38


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Posted 27 June 2004 - 06:41 AM

Quite easily possible if you think about it.

You remove some form of malware using Hijack this. You are not certain exactly what it is, but you know it does not belong on your computer.

Hijack this removes the file, and creates a backup, in case you need to replace it at some stage.

You delete the original file, and everything works OK.
BUT - the infected file is actually still on your computer, just in a place where it can do no harm, in the backup!

Then along comes AVG, finds the infection. AVG does not know that it is harmless, and screams it's head off!
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