W32/Mytob.JG Worm

 Information about the W32/Mytob.JG Worm:

W32/Mytob.JG is a mass mailing worm. This worm is a variant of W32/Mytob.A. The worm will infect Windows systems and spreads through email.

The infected email carries a spoofed 'From' address picked up randomly from the infected system

The subject of the infected mail will be;

<random characters>
Members Support
Security measures
Important Notification
Email Account Suspension
Your Account is Suspended
Notice of account limitation
Your password has been updated
*DETECTED* Online User Violation
Your new account password is approved
Your password has been successfully updated
You have successfully updated your password
Your Account is Suspended For Security Reasons
Warning Message: Your services near to be closed.

The body of the infected mail will be;

Dear user (UserName),

You have successfully updated the password of your (Domain) account.

If you did not authorize this change or if you need assistance with your
account, please contact (Domain) customer service at:
Thank you for using (Domain)!
The (Domain) Support Team

+++ Attachment: No Virus (Clean)
+++ (Domain) Antivirus - www.(Domain)

Dear user (UserName),

It has come to our attention that your (Domain) User Profile ( x ) records are
out of date. For further details see the attached document.
Thank you for using (Domain)!
The (Domain) Support Team

+++ Attachment: No Virus (Clean)
+++ (Domain) Antivirus - www.(Domain)

Dear (Domain) Member,

We have temporarily suspended your email account .

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 (Domain) account.

Sincerely,The (Domain) Support Team

+++ Attachment: No Virus (Clean)
+++ (Domain) Antivirus - www.(Domain)

Dear (Domain) 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 (Domain) Support Team

+++ Attachment: No Virus found
+++ (Domain) Antivirus - www.(Domain)

The name of the infected attachment will be any one of the following;

readme
password
document
account-info
new-password
email-details
account-report
email-password
account-details
account-password
updated-password
approved-password
accepted-password
important-details
<random characters>

The extension of the infected attachment will be single or double. The first extension can be any one of the following;

zip, bat, cmd, exe, pif, scr, txt, htm or doc

The second extension can be any one of the following;

exe, pif or scr

Upon execution of the infected attachment, the worm copies itself as winds.exe in Windows System folder.

The worm modifies registry at the following location to load itself during each startup.

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\RunServices

To propagate itself, the worm collects all the available email addresses from the Windows address book (WAB) of the infected system.

The worm mails itself to these addresses using its own SMTP engine.

It also alters the HOSTS file to prevent access to some websites.

This worm first appeared on October 15, 2006.

 Other names of W32/Mytob.JG Worm:

This Worm is also known as W32/Mytob-JG, WORM_MYTOB.OD, Net-Worm.Win32.Mytob.bi .