Win32/Mydoom [Threat Name] go to Threat

Win32/Mydoom.CN [Threat Variant Name]

Category	worm
Size	88064 B
Aliases	Email-Worm.Win32.Mydoom.hx (Kaspersky)
	W32.Mydoom.A@mm (Symantec)
	Win32:Lmir-BK (Avast)

Win32/Mydoom.CN is a worm that spreads via e-mail.

When executed, the worm creates the following files:

The worm registers itself as a system service using the following name:

The following Registry entries are created:

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\mstimer]
- "Description" = "Maintains date and time synchronization on all clients and server in the network. If this service is stopped, date and time synchronization will be unavailable. If this service is disabled, any services that explicitly depend on it will fail to start."
- "DisplayName" = "Windows Timer Service"
- "ErrorControl" = 1
- "ImagePath" = "%SystemRoot%\system32\svchost.exe -k mstimer"
- "ObjectName" = "LocalSystem"
- "Start" = 2
- "Type" = 288
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\mstimer\Enum]
- "0" = "Root\LEGACY_MSTIMER\0000"
- "Count" = 1
- "NextInstance" = 1
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\mstimer\Parameters]
- "ServiceDll" = "%SystemRoot%\system32\mstimer.dll"

E-mail addresses for further spreading are searched for in local files with one of the following extensions:

The worm gathers e-mail addresses for further spreading by searching in the Windows Address Book (WAB).

Addresses containing the following strings are avoided:

Subject of the message is the following:

Body of the message is the following:

The attachment is a/an RAR archive file containig an executable.

The name of the attached file is following:

The worm tries to download several files from the Internet.

The HTTP protocol is used.

These are stored in the following locations:

The files are then executed.

The worm modifies the following file:

The worm may create the following files: