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Antivirus Pro 2009


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#1 Portman

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Posted 17 November 2008 - 04:15 PM

Hi, I'm new to this site and hoping someone can help me.

I am trying to remove Antivirus Pro 2009 from a friend's PC (running Windows XP SP3). The program has blocked his internet connection completely, so no pages will load in IE or Firefox. Also none of his security programs can gain access to do their updates.

I downloaded the Malwarebytes' AntiMalware program on my computer, then copied it to a CD to load onto the infected computer, intending to follow the removal instructions on this site. However, when I try to run the mbam-setup.exe program, nothing happens - I know from installing it on my own computer that there is a initial dialogue box asking you to select your language, but this does not appear. Task Manager lists mbam-setup.exe as a running process, but there is nothing on the applications tab (the failure to run also affects SpybotS&D and Comodo icons, but it is possible to run AVG8, A-squared, Adaware 2008, although they are all now out of date).

The failure of mbam-setup.exe to run means that I cannot make any further progress in the removal process. I have tried to run it in Safe Mode as well, but it makes no difference.

I have managed to run AVG AntiRootkit and it has shown a hidden program called brastk.exe, along with various files starting TDSS (mainly .ddl or .dat) and other files named c_055nnn.nls (nnn =three digit numeric). I understand that brastk.exe is a problem, but how can I remove it?

Sorry for the length of this post. Any help or suggestions welcome.

Thanks

PH64 :thumbsup:

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#2 rigel

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Posted 17 November 2008 - 08:01 PM

Hi Portman and welcome to BleepingComputer.

First a word of warning about TDSS...

IMPORTANT NOTE: One or more of the identified infections was related to a rootkit component. Rootkits and backdoor Trojan are very dangerous because they use advanced techniques (backdoors) 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 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, 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. Because your computer was compromised please read How Do I Handle Possible Identify Theft, Internet Fraud and CC Fraud?

Although the rootkit was identified and 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. In some instances an infection may have caused so much damage to your system that it cannot be completely cleaned or repaired. The malware may leave so many remnants behind that security tools cannot find them. Many experts in the security community believe that once infected with this type of malware, the best course of action is to wipe the drive clean, reformat and reinstall the OS. Please read:

"When should I re-format? How should I reinstall?"
"Help: I Got Hacked. Now What Do I Do?"
"Where to draw the line? When to recommend a format and reinstall?"

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.

If you want to try and run Malwarebytes, please rename the file you downloaded. Some types of malware will disable security tools. If they will not run, try renaming it. Right-click on the file and change the .exe extension to .bat, .com, .pif, or .scr and then double-click on it to run.

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#3 Portman

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Posted 18 November 2008 - 01:53 PM

Hi Rigel

Thanks for the prompt reply and the advice given. My friend doesn't use his PC for online banking or purchases, but I will still recommend a reformat/reinstall. If he chooses the 'clean' option I will let you know if we need any more help.

Thanks again

PH64 :thumbsup:




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