F-Secure Virus Descriptions : Mimail.J
[Summary] | [Disinfection] | [Detailed Description] | [Detection]
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THIS VIRUS IS RANKED AS LEVEL 2 ALERT UNDER
F-SECURE RADAR.
Radar Alert LEVEL 2
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Mimail.J is an email worm which disguises itself as an email from
Paypal on-line payment service and tries to steal credit card
information. It arrives with the subject "IMPORTANT" and attachment named
www.paypal.com.pif
Except from some textual content the worm's code is almost exactly the same
as Mimail.I
Mimail.I:
http://www.f-secure.com/v-descs/mimail_i.shtml
Manual disinfection of an Mimail.J infected computer consists of
the following steps:
1, Remove the registry value
[HKLM\Software\Microsoft\Windows\CurrentVersion\Run\SvcHost32]
2, Restart the computer
3, Delete '%WinDir%\svchost32.exe' (where %WinDir% is the
Windows Directory, typically c:\windows\ or c:\winnt)
Mimail.J was found on November 17th, 2003. As Mimail.J is packed with a non-modified
version of UPX, it is a recompiled version with minimal changes in its
code. It arrives in email that looks as follows:
From: "PayPal.com" Do_Not_Reply@paypal.com
Subject: IMPORTANT
Attachment: www.paypal.com.pif
Dear PayPal member,
We regret to inform you that your account is about to be expired in next five
business days. To avoid suspension of your account you have to reactivate it by
providing us with your personal information.
To update your personal profile and continue using PayPal services you have to
run the attached application to this email. Just run it and follow the
instructions.
IMPORTANT! If you ignore this alert, your account will be suspended in next
five business days and you will not be able to use PayPal anymore.
Thank you for using PayPal.
Please note that messages received with a subject "Problems with your PayPal account"
and attachment named InfoUpdate.exe were seeded by Mimail author. The worm does not
use this subject and attachment name when spreading from an infected computer.
The address collection routine is the same as in the previous variant.
The mail spreading routine is the same as in the previous variant.
Payload
Payload
Like Mimail.I: The worm displays a fake Paypal form. The form closely
resembles the look of PayPal's website. This way the worm tries
to fool the users to enter their credit card information, which is
mailed to certain email addresses.
This new variant, in addition, asks for personal information in a form like
shown below:
System Infection
Same as in Mimail.I
Detection of Mimail.J in F-Secure Anti-Virus was published on
November 18th, 2003 in update:
[FSAV_Database_Version]
Version=2003-11-18_01
Technical Details:
Gergely Erdelyi and Ero Carrera, November 17th, 2003;
F-Secure Corporation
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