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Is my computer still infected with a virus/malware?


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#1 dianielle01

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Posted 17 April 2011 - 01:37 AM

Hi;

My PC had been infected with Backdoor:Win32/Cycbot.B and Adware:Win32/DoubleD 2 weeks ago. I have Trend Micro Titanium but it did not detect the infection at all. It just kept saying that it was blocking some applications from making any changes to my PC. I ran windows defender and it was able to detect and remove them. Few days after that, I was looking at Trend Micro's Log file and it was saying that it has blocked 127 web threats. I was getting paranoid so I downloaded malwarebytes and it detected some spywares and deleted them. But yesterday, trend micro detected TROJ_GEN.R99C2DF but did not remove it. I ran trendmicro, windows defender, and malwarebytes tonight but it did not detect anything and said that my PC is running normally. Few minutes ago, Trend micro notified me that it has blocked wrapper1.htm and that it deleted the virus. Why am I getting infected with viruses? My PC was running great and Trend micro was not detecting any infection before the malware infection happened. Was the cycbot malware infection responsible for all the viruses that I am getting now?

Edited by Orange Blossom, 17 April 2011 - 08:16 AM.
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#2 boopme

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Posted 17 April 2011 - 05:09 PM

Hello, here's the real deal. As one or more of the identified infections is a backdoor trojan.

This allows hackers to remotely control your computer, steal critical system information and download and execute files.

I would counsel you to disconnect this PC from the Internet immediately. If you do any banking or other financial transactions on the PC or if it should contain any other sensitive information, please get to a known clean computer and change all passwords where applicable, and it would be wise to contact those same financial institutions to apprise them of your situation.

Though the trojan has been identified and can be killed, because of it's backdoor functionality, your PC is very likely compromised and there is no way to be sure your computer can ever again be trusted. Many experts in the security community believe that once infected with this type of trojan, the best course of action would be a reformat and reinstall of the OS. Please read these for more information:

How Do I Handle Possible Identify Theft, Internet Fraud and CC Fraud?
When Should I Format, How Should I Reinstall

We can still clean this machine but I can't guarantee that it will be 100% secure afterwards. Let me know what you decide to do.
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