Description:
Like other WORM_MYTOB variants, this polymorphic worm spreads by attaching a copy of itself to an email message, which it sends to target recipients using its own Simple Mail Transfer Protocol (SMTP) engine.
The use of its own SMTP engine improves the propagation method of this worm since it does not require other messaging applications to send the following email message:
Subject: (any of the following)
• *DETECTED* Online User Violation
• Email Account Suspension
• Important Notification
• Members Support
• Notice of account limitation
• Security measures
• Warning Message: Your services near to be closed.
• You have successfully updated your password
• Your Account is Suspended
• Your Account is Suspended For Security Reasons
• Your new account password is approved
• Your password has been successfully updated
• Your password has been updated
Message body: (any of the following)
Dear user {random},
You have successfully updated the password of your {random} account.
If you did not authorize this change or if you need assistance with your account, please contact {random} customer service at: {random}
Thank you for using {random}!
The {random} Support Team
+++ Attachment: No Virus (Clean)
+++ {random} Antivirus - www.{random}
=======================
Dear user {random},
It has come to our attention that your {random} User Profile ( x ) records are out of date. For further details see the attached document.
Thank you for using {random}!
The {random} Support Team
+++ Attachment: No Virus (Clean)
+++ {random} Antivirus www.{random}
=======================
Dear {random} Member,
We have temporarily suspended your email account {random}.
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 [random] account.
Sincerely,The {random} Support Team
+++ Attachment: No Virus (Clean)
+++ {random} Antivirus - www.{random}
=======================
Dear {random} 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 {random} Support Team
+++ Attachment: No Virus found
+++ {random} Antivirus www.{random}
Attachment: (any of the following)
• accepted-password
• account-details
• account-info
• account-password
• account-report
• approved-password
• document
• email-details
• email-password
• important-details
• new-password
• password
• readme
• updated-password
(with any of the following extensions)
• BAT
• CMD
• EXE
• PIF
• SCR
• ZIP
Users must take note of the email details described above to avoid infection.
This worm opens a random port and connects to a specific Internet Relay Chat (IRC) server. Once connected, it joins the channel #ilikeboys, where it listens for commands from a remote malicious user. It executes the said commands locally, thus compromising affected machines.
It terminates specific processes if found running on affected machines often to prevent detection and removal. These processes are mostly related to antivirus and security applications. The list of processes also include Task Manager and Registry Editor.
It modifies the Windows HOSTS file, which is often located in the Windows or Windows system folder to prevent affected users from accessing different Web sites that are also related to security companies. Once these users click any of the enumerated sites, they are redirected to the local machine.
It also attempts to connect to a specific Web site possibly to download different malware programs.
For additional information about this threat, see:
Solution
Technical Details
Description created: Oct. 18, 2005 8:58:31 AM GMT -0800
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