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Trouble With Popups Powered By Zedo


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#1 kgirlhart

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Posted 20 February 2008 - 09:53 PM

I am getting lots of popups that are powered by zedo. I found intructions that told me to boot in safe mode and then delete the file core.sys and core.cshe.dsk. Then go into Regedit and delete the core folder there. I went into safe mode and found core.sys, but it is a file avg7core.sys which I think may be part of the AVG visrus scanner I'm running. I didn't delete anything yet. I don't want to mess up any program that I need to be running, but I don't want these popups either. Any advice?

Edit: Moved topic to the more appropriate forum. ~ Animal

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#2 samlf3rd

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Posted 20 February 2008 - 10:34 PM

Oh my poor friend, one of the worst I think besides virtumundo. I had zedo it would turn my cpu on at 3 in the morning and I would get some site called jack9untv?
Anyway, what kind of virus protection do you have?
If you don't have SPYBOTS&D I would advise downloading it now, there are a few let me know what anti-virus/spyware programs you have. Also try downloading VUNDOFIX.EXE that removed a couple of hard ones for me(if you don't have anything simply delete it after you run a scan.
You want to go to start then cintrol panel and click on folder options(switch to classic view if you can't see it, it's a folder with a green check on it. Then click the view tab and then select the SHOW HIDDEN FILES AND FOLDERS(after you remove the virus switch this option back to hide it may slow down your cpu a little bit, but your virus is hidden and your virus programs will work much more efficiently with this option selected.
You should always start the virus removal by (also in the control panel) clicking on internet options, and click delete browsing history, click clear passwords(clear all). the go to my computer right click on your hard drive click properties, then click disk clean-up. This will remove some of the files associated with the virus. Now your are in the process of cornering the virus. I would now run a virus scan(full scan,or deep search) then run spybot search and destroy.
If you have the zlob virus you will nee to download all the tools needed spybots&d, ccleaner,hijackthis.exe superanti-spyware. spyware blaster(for future protection). It is rough but you can do I did it when I knew knowthing about computers now I consider it a challenge when I do get one.
Sam F 3

#3 samlf3rd

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Posted 20 February 2008 - 10:37 PM

P.S. I wouldn't advise manually removing these viruses you will regret it(unless you really know what your doing a virus can be connected to other programs the same way a fake power wire is linked on a bomb make one clip and your world is in peril.

#4 boopme

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Posted 21 February 2008 - 12:09 AM

The legitimate file avg7core.sys is located in the folder C:\Windows\System32\drivers.

I agree with samlf3rd as this is a bad infection. You have a rootkit infection. I am going to post an excellent commentary by one of our top malware experts quietman7. It is a thorough explanation of the situation you face and the decision you need to make.

One or more of the identified infections is related to a nasty rootkit componet. Rootkits are very dangerous because they use advanced techniques as a means of accessing a computer system that bypasses security mechanisms and steal sensitive information which they send back to the hacker. Many rootkits can hook into the Windows 32-bit kernel, and patch several APIs to hide new registry keys and files they install. Remote attackers use backdoor Trojans and rootkits as part of an exploit to to gain unauthorized access to a computer and take control of it without your knowledge.

If your computer was used for online banking, has credit card information or other sensitive data on it, you should immediately disconnect from the Internet until your system is cleaned. All passwords should be changed immediately to include those used for banking, email, eBay, paypal and online forums. You should consider them to be compromised. They should be changed by using a different computer and not the infected one. If not, an attacker may get the new passwords and transaction information. Banking and credit card institutions should be notified of the possible security breach.

Although the rootkit has been identified and may be removed, your PC has likely been compromised and there is no way to be sure the computer can ever be trusted again. It is dangerous and incorrect to assume that because the rootkit has been removed the computer is now secure. Many experts in the security community believe that once infected with this type of malware, the best course of action is to reformat and reinstall the OS. Please read "When should I re-format?and "Reformatting the computer or troubleshooting; which is best?".

Should you decide not to follow that advice, we will do our best to help clean the computer of any infections but we cannot guarantee it to be trustworthy or that the removal will be successful. Let me know how you wish to proceed.


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