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Browser hijack continues to come back


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I am hoping that someone might be able to guide me. I have had a virus or the last few weeks and I have been unable to get rid of it. Each time I remove the infected files, my computer runs fine for 10-15 minutes and then it comes back once again. I assume I am not getting to the source.

Here is the latest scan log:

Malwarebytes' Anti-Malware 1.51.1.1800

www.malwarebytes.org

Database version: 7586

Windows 6.0.6000

Internet Explorer 7.0.6000.17037

8/27/2011 8:33:21 AM

mbam-log-2011-08-27 (08-33-21).txt

Scan type: Quick scan

Objects scanned: 174393

Time elapsed: 8 minute(s), 27 second(s)

Memory Processes Infected: 1

Memory Modules Infected: 0

Registry Keys Infected: 0

Registry Values Infected: 0

Registry Data Items Infected: 0

Folders Infected: 0

Files Infected: 2

Memory Processes Infected:

c:\Windows\system\svchost.exe (Backdoor.Bot) -> 2612 -> Unloaded process successfully.

Memory Modules Infected:

(No malicious items detected)

Registry Keys Infected:

(No malicious items detected)

Registry Values Infected:

(No malicious items detected)

Registry Data Items Infected:

(No malicious items detected)

Folders Infected:

(No malicious items detected)

Files Infected:

c:\Windows\system\svchost.exe (Backdoor.Bot) -> Quarantined and deleted successfully.

c:\program files\YTDSETUP\trafficspace.exe (PUP.Zugo) -> Quarantined and deleted successfully.

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  • Staff

Hi and welcome to Malwarebytes.

I'm afraid I have bad news.

Your logs reveal a backdoor trojan. A backdoor severely compromises system integrity.

A compromised system may allow illicit network connections, disabling of security software, modifying critical system files and collection and transmiission of personal identifiable information without your consent.

I recommend that you disconnect this PC from the Internet immediately, and only reconnect to download any tools that are required. If you do any banking or other financial transactions on the PC or it if it contains 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. If it were on my PC I would not hesitate for a moment to do so. 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

Should you decide not to follow that advice, we will of course do our best to clean the computer of any infections that we can see but, as I already stated, we can in no way guarantee it to be trustworthy.

Should you have any questions, please feel free to ask.

Let me know what you decide.

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