W32/MyDoom-AO

Category: Viruses and Spyware
Type: Win32 worm
Prevalence: No Reports

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Aliases

  • Email-Worm.Win32.Mydoom.ak

Characteristics

  • Turns off anti virus applications
  • Modifies data on the computer
  • Uses its own emailing engine

Affected Operating Systems

Windows

Recovery Instructions:

Please follow the instructions for removing worms.

Replace the Hosts file from a backup or edit it in Notepad to remove the changes that the worm has made.

Windows NT/2000/XP/2003

In Windows NT/2000/XP/2003 you will also need to edit the following registry entries, if they are present. Please read the warning about editing the registry.

At the taskbar, click Start|Run. Type 'Regedit' and press Return. The registry editor opens.

Before you edit the registry, you should make a backup. On the 'Registry' menu, click 'Export Registry File'. In the 'Export range' panel, click 'All', then save your registry as Backup.

Locate the HKEY_LOCAL_MACHINE entry:

HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\shell

it should contain a reference to explorer.exe (or possibly NALWIN32.exe if you are using NetWare) only. Remove any reference to any file you deleted. You may need to replace the reference to explorer.exe.

Locate the HKEY_LOCAL_MACHINE entry:

HKLM\Software\Microsoft\Windows\CurrentVersion\Run
lsass
%SYSTEM%\lsasrv.exe

and delete it if it exists.

Close the registry editor.

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