Threat Description

Email-Worm:​W32/Mimail.D

Details

Aliases: Email-Worm:​W32/Mimail.D
Category: Malware
Type: Email-Worm
Platform: W32

Summary



This type of worm is embedded in an e-mail attachment, and spreads using the infected computer's e-mailing networks.



Removal



Automatic Disinfection

Allow F-Secure Anti-Virus to disinfect the relevant files.

For more general information on disinfection, please see Removal Instructions.



Technical Details



Email-Worm:W32/Mimail.D is a worm that propagates in infected e-mail attachments.

The worm file is a PE executable 24608 bytes long. It is not compressed.

The worm can also exploit a vulnerability to drop and execute a file. Apart from this, Mimail.D does not have a payload.

Mimail.D was found on 1 November, 2003.

Installation

The worm's file installs itself as VIDEODRV.EXE file into Windows directory and creates a startup key for its file in the Registry:

  • [HKLM\Software\Microsoft\Windows\CurrentVersion\Run] "VideoDriver" = "%windir%\videodrv.exe"

where %windir% is a Windows directory name.

Propagation

The worm spreads itself in the following message:

Subject: your account
Body: 
 Hello there,
 I would like to inform you about important information regarding your 
 email address. This email address will be expiring.
 Please read attachment for details.
 Best regards, Administrator  
 
Attachment: message.zip 

The attachment contains message.html which, when opened in vulnerable versions of Internet Explorer (IE), will drop an executable named epo.exe and run it.

For more information on the IE MHTML vulnerability used here please see http://www.microsoft.com/technet/security/bulletin/MS03-014.asp






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