Threat Description



Aliases: Type_vbs_mailer, @mm
Category: Malware
Type: Email-Worm
Platform: W32


This type of worm is embedded in an e-mail attachment, and spreads using the infected computer's e-mailing networks.


Automatic action

Once detected, the F-Secure security product will automatically disinfect the suspect file by either deleting it or renaming it.


Detailed instructions for F-Secure security products are available in the documentation found in the Downloads section of our Home - Global site.

You may also refer to the Knowledge Base on the F-Secure Community site for further assistance.

Technical Details

When searching our Virus Descriptions database for a specific program (e.g., Email-Worm:W32/Example.A), you may be directed to this page if the overview below sufficiently describes the program. Alternatively, you may be directed to this page if no description matching that specific query is currently available. You can submit a sample of the suspect file to our Response Lab for further analysis via:

About Email-Worms

An Email-Worm (also known as a mass-mailer or less commonly, an Internet worm) is a type of worm that distributes copies of itself in an infectious executable files attached to fake e-mail messages.

For representative examples of email-worms, see:

Email-worms typically depend on social engineering tactics to lure a user into opening and executing an e-mail attachment. As such, users can avoid infection by an email-worm by simply refusing to open any e-mail file attachments without first verifying its safety with the e-mail sender.

In some cases however, an infected attachment may contain an exploit that allows the e-mail worm to install and start automatically on the computer, without any user action. This is only possible if the e-mail client contains certain vulnerabilities.

Most worms nowadays include malicious routines (e.g.,password or data stealing), or carry viruses and backdoors inside them.


For more information, see Terminology: Email-Worm.


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