Question

Registry Restore and Virus Repair

Asked by: jimbecher

  Just recently (in the last month or so) I have had a couple computer brought to me that have been very badly infected with Spyware/Malware/Virus. What ever it was is unlike any I have ever seen. It changed all sorts of permissions on the registry to where when to try and do just about anything it comes back with the error that it won't all the action because of the effects it will have on the computer.

   I am sure several others have come across this. First, does anyone know the name of this particular malware? Second, is there a cure that will fix what it did to the registry?

   Lastly, in all my years for ding XP I have never had to do a System Restore. Can anyone give me a quick rundown?

Thanks!

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Asked On
2007-12-08 at 15:11:29ID23011072
Tags

virus

,

registry

,

repair

,

fix

,

restore

Topics

Anti-Virus

,

Operating Systems Network Security

Participating Experts
2
Points
500
Comments
2

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Answers

 

by: IndiGenusPosted on 2007-12-08 at 15:28:04ID: 20435495

As far as the infections go. The nastiest and most common ones I'm seeing out there right now are Vundo trojan, smitfraud, and other various backdoor trojans and bots. And yes, they are going right after permissions in the registry for access to things like Control Panel, regedit, Start->Run. This is for the pretty obvious reason that it makes it more difficult to fix things if you can't get to the "tools" you need.

A tool called SDFix will automatically restore permissions much of the time now (not always but most). It also removes many of the nasty bots and backdoors that are out there right now.

The next tool we are usually implementing is combofix nowadays. CF goes after several infections including Vundo and also offers very powerful scripting capabilities to do file/folder/driver deletion and reg edits all in one shot. Here is a good example including the use of these tools and Smitfraudfix.

http://www.experts-exchange.com/Virus_and_Spyware/Anti-Virus/Q_22994719.html

This was a pretty severely infection machine that without these tools and the knowledge to use them would have been very difficult to clean.

Here is a link to instructions on using System Restore.
http://www.microsoft.com/windowsxp/using/helpandsupport/getstarted/ballew_03may19.mspx

One point I want to make though since this is a malware discussion. Most times system restore won't solve malware issues. Could even make it worse as most of the time the restore points are infected too.

 

by: rpggamergirlPosted on 2007-12-08 at 15:35:49ID: 20435511

If the System Restore still works(a lot of nasties can turn off windows utilities including system restore) then sometimes that is an option, if you go far back before the infection started, a clean restore point.

 A lot of nasties these days, change pernissions so we can't really pinpoint what infection it is, until we see some logs.

Here's another link on System Restore if it helps:
System Restore FAQs.
http://www.5starsupport.com/faq/xp-system-restore.htm

20120131-EE-VQP-002

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