|
|
|
Top 10 malware reported to Sophos in July 2005
W32/Mytob-CX is a mass-mailing worm and IRC backdoor Trojan for the
Windows platform.
W32/Mytob-CX runs continuously in the background, providing a backdoor
server which allows a remote intruder to gain access and control over the
computer via IRC channels.
Email sent by W32/Mytob-CX have the following properties:
Subject line chosen from:
'Your Account is Suspended'
'*DETECTED* Online User Violation'
'Your Account is Suspended For Security Reasons'
'Warning Message: Your services near to be closed.'
'Important Notification'
'Members Support'
'Security measures'
'Email Account Suspension'
'Notice of account limitation'
Message text chosen from:
'Dear <company name> Member,
We have temporarily suspended your email account <Email address>.
This might be due to either of the following reasons:
1. A recent change in your personal information (i.e. change of address).
2. Submiting invalid information during the initial sign up process.
3. An innability to accurately verify your selected option of subscription
due to an internal error within our processors.
See the details to reactivate your <company name> account.
Sincerely,The <company name> Support Team
+++ Attachment: No Virus (Clean)
+++ <company name> Antivirus - <web address>'
'Dear <company name> Member,
Your e-mail account was used to send a huge amount of unsolicited spam
messages during the recent week. If you could please take 5-10 minutes out
of your online experience and confirm the attached document so you will not
run into any future problems with the online service.
If you choose to ignore our request, you leave us no choice but to cancel
your membership.
Virtually yours,
The <company name> Support Team
+++ Attachment: No Virus found
+++ <company name> Antivirus - <web address>'
'Dear user <username>,
You have successfully updated the password of your <company name> account.
If you did not authorize this change or if you need assistance with your
account, please contact <company name> customer service at: <email address>
Thank you for using <company name>!The <company name> Support Team
+++ Attachment: No Virus (Clean)
+++ <company name> Antivirus - <web address>'
'Dear user <username>,
It has come to our attention that your <company name> User Profile ( x )
records are out of date. For further details see the attached document.
Thank you for using <company name>!
The <company name> Support Team
+++ Attachment: No Virus (Clean)
+++ <company name> Antivirus - <web address>'
The attached file consists of any of the following base names followed by
the extension ZIP:
'important-details'
'account-details'
'email-details'
'account-info'
'document'
'readme'
'account-report'
'updated-password'
'email-password'
'new-password'
'password'
'approved-password'
'account-password'
'accepted-password'
<random characters>
The worm may optionally create double extensions where the first extension
is DOC, TXT or HTM and the final extension is PIF, SCR, EXE or ZIP.
W32/Mytob-CX harvests email addresses from files on the infected computer
and from the Windows address book. The worm will also terminate
security-related processes and Windows applications.
|
|
|
This web is optimized for 800 x 600 monitor resolution or above and
the latest web browser. Get the latest IE or Netscape web browser. (you
need to connect to the internet first) |
|
|
