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How to Remove W32.Downadup.B:

Ditulis oleh zikrul4min di/pada Januari 20, 2009

How to Remove W32.Downadup.B:

by precisesecurity
December 31st, 2008 at 5:38 am

1. Temporarily Disable System Restore (Windows Me/XP). [how to]
2. Update the virus definitions.
3. Reboot computer in SafeMode [how to]

4. Find and Stop the Service:
- Click Start > Run.
- Type services.msc, and then click OK.
- Locate and select the service that was detected.
Service name: [PATH TO WORM]
Display name: [WORM GENERATED SERVICE NAME]
Startup Type: Automatic

- Click Action > Properties.
- Click Stop.
- Change Startup Type to Manual.
- Click OK and close the Services window.

5. Run a full system scan and clean/delete all infected file(s)
6. Delete/Modify any values added to the registry. [how to edit registry]
Navigate to and delete the following registry entries:
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run\”[RANDOM NAME]” = “rundll32.exe “[RANDOM FILE NAME].dll”, ydmmgvos”
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Applets\”dl” = “0″
HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Applets\”dl” = “0″
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Applets\”ds” = “0″
HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Applets\”ds” = “0″
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\[WORM GENERATED SERVICE NAME]\”DisplayName” = “[WORM GENERATED SERVICE NAME]”
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\[WORM GENERATED SERVICE NAME]\”Type” = “4″
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\[WORM GENERATED SERVICE NAME]\”Start” = “4″
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\[WORM GENERATED SERVICE NAME]\”ErrorControl” = “4″
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\[WORM GENERATED SERVICE NAME]\”ImagePath” = “%SystemRoot%\system32\svchost.exe -k
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\[WORM GENERATED SERVICE NAME]\Parameters\”ServiceDll” = “[PATH TO WORM]”

Restore the following registry entries to their previous values, if required:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\ “TcpNumConnections” = “00FFFFFE”
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\explorer\Advanced\ Folder\Hidden\SHOWALL\”CheckedValue” = “0″

7. Exit registry editor and restart the computer.
8. In order to make sure that threat is completely eliminated from your computer, carry out a full scan of your computer using AntiVirus and Antispyware Software. Another way to delete the virus using various Antivirus Program without the need to install can be done with Online Virus Scanner.

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