Eng
  1. Skip to navigation
  2. Skip to content
  3. Skip to sidebar


Mimail.E


Aliases:


Mimail.E
W32/Mimail.E@mm, I-Worm.Mimail.e

Malware
Email-Worm
W32

Summary

Mimail.E worm was found on 1st of November, 2003. It is a close variant of Mimail.C worm. The description of Mimail.C worm variant can be found here:

http://www.europe.f-secure.com/v-descs/mimail_c.shtml



Disinfection & 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

The Mimail.E worm is a minor variant of Mimail.C worm.

The differences between these 2 versions are as follows:

1. The Mimail.E worm's file is 10784 bytes long, compressed with UPX file compressor, the unpacked file's size is 23072 bytes.

2. The worm installs itself to Windows folder as CNFRM.EXE file and creates a startup key in the Registry:

[HKLM\Software\Microsoft\Windows\CurrentVersion\Run]
 "Cnfrm32" = "%windir\cnfrm.exe"
 

where %windir% is a Windows directory name.

3. The worm performs a DoS (Denial of Service) attack on the following sites:

spews.org
 spamhaus.org
 spamcop.net
 www.spews.org
 www.spamhaus.org
 www.spamcop.net
 

4. The worm spreads itself in the following message:

From:

 john@<domain of the recipient> 
 Subject:

 don't be late!     <some random characters> 
 
 Body:

 Will meet tonight as we agreed, because on Wednesday I don't think I'll make it, 
 so don't be late. And yes, by the way here is the file you asked for.
 It's all written there. See you. 
 <some random characters> 
 Attachment: readnow.zip
 
 

The attachment is a ZIP archive that contains the worm's executable file with READNOW.DOC.SCR name.

5. The .E worm variant doesn't have the spying functionality that was present in the .C worm variant.



Detection

Detection in F-Secure Anti-Virus was published on November 1st, 2003 in the following updates:

Detection Type: PC
Database: 2003-11-01_02



Technical Details: Alexey Podrezov, November 3rd, 2003



Scan and clean your PC




F-Secure Online Scanner will scan and clean your PC in just a few minutes for free

Disinfect your PC




F-Secure Anti-Virus will disinfect your PC and remove all harmful files