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 action

Once detected, the F-Secure security product will automatically disinfect the suspect file by either deleting it or renaming it.

More

You may wish to refer to the Support Community for further assistance. You also may also refer to General Removal Instructions for a general guide on alternative disinfection actions.



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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