Random ads' sounds playing and redirecting virus

[Guest Piotrek]

Hi

I've had this problem for couple days now. I downloaded Microsoft Windows Malicious Software Removal Tool virus but I don't know if that is the only thing I have.

One symptom is that I hear sound of random ads playing in the background off and on. Also, there appears System Error message that asks me if I want to continue loading the script on a page (it gives the address of those pages and it looks like these addresses are of the ads that play in the background).

This is how this message looks like: Doc1(2).pdf

I also have redirecting problem.

I've scanned my system with Malwarebytes and here is the log but it did not remove that virus.

Hope somebody can help.

Thanks!

Malwarebytes' Anti-Malware 1.50.1.1100

www.malwarebytes.org

Database version: 6370

Windows 6.1.7600 (Safe Mode)

Internet Explorer 8.0.7600.16385

2011-04-15 19:37:21

mbam-log-2011-04-15 (19-37-21).txt

Scan type: Full scan (C:\|D:\|F:\|)

Objects scanned: 458361

Time elapsed: 49 minute(s), 30 second(s)

Memory Processes Infected: 0

Memory Modules Infected: 0

Registry Keys Infected: 2

Registry Values Infected: 0

Registry Data Items Infected: 0

Folders Infected: 0

Files Infected: 1

Memory Processes Infected:

(No malicious items detected)

Memory Modules Infected:

(No malicious items detected)

Registry Keys Infected:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\.norton2009Reset (Trojan.Hacktool) -> Quarantined and deleted successfully.

HKEY_CURRENT_USER\SOFTWARE\Cerberus (Backdoor.Trace) -> Quarantined and deleted successfully.

Registry Values Infected:

(No malicious items detected)

Registry Data Items Infected:

(No malicious items detected)

Folders Infected:

(No malicious items detected)

Files Infected:

c:\program files\norton2009reset.exe (Trojan.Hacktool) -> Quarantined and deleted successfully.

[screen317]

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.

[Guest Piotrek]

I am planning on formatting my disc and reinstalling the system.

I've been working with somebody else on this virus but didn't get rid of it yet.

Thanks for the response.

[screen317]

Thanks for letting me know.