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Antivirus 2009 infected the userinit.exe

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I got this nasty virus from installing a fake video codec.... I've managed to remove most of the virus using MBAM. However, it wont remove the infection of the userinit.exe, it keeps on popping up everytime I run MBAM even though I removed it the previous time.

I've tried to search for all userinits and it seems there are two more of those. When I upload them to a online scanner, all four show up as infected!

When I enter XP after the log-on screen I have to use Task Manager to manually start explorer, otherwise Windows won't load. And everytime I connect to the internet, the virus starts downloading more malware and redirect homepages. I've also tried F-secure but it's not able to find anything.

I would have reinstalled XP long time ago if I hadn't had a number of programs installed, which I am not able to reinstall easily. Is there anyway I can repair the userinit.exe-files? Please help me someone!

Malwarebytes' Anti-Malware 1.33

Database version: 1654

Windows 5.1.2600 Service Pack 3

2/2/2009 11:07:04 AM

mbam-log-2009-02-02 (11-07-04).txt

Scan type: Quick Scan

Objects scanned: 80120

Time elapsed: 10 minute(s), 38 second(s)

Memory Processes Infected: 0

Memory Modules Infected: 0

Registry Keys Infected: 0

Registry Values Infected: 0

Registry Data Items Infected: 2

Folders Infected: 0

Files Infected: 0

Memory Processes Infected:

(No malicious items detected)

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:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Userinit (Trojan.Agent) -> Data: c:\windows\system32\userinit.exe -> Quarantined and deleted successfully.

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Userinit (Trojan.Agent) -> Data: system32\userinit.exe -> Quarantined and deleted successfully.

Folders Infected:

(No malicious items detected)

Files Infected:

(No malicious items detected)

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Hello and Welcome to Malwarebytes.org

If you're having Malware related issues with your computer that you're unable to resolve.

  1. Please read and follow the instructions provided here: I'm infected - What do I do now?
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I had a similar problem a couple of days ago...but this PC's userinit.exe was totally missing. I copied it from another XP machine and that worked fine. I did have to use a boot CD to allow me to access the file system without Windows, since Windows wouldn't start.

There's more detail available on www.yourexodus.com by clicking on Free Help.

Hope it helps!


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