Net-Worm

Classification

Malware

Net-Worm

W32

Net-Worm

Summary

A net-worm is a type of worm that finds new host machines to infect by using network shares -a media (such as a hard drive or server) that can be accessed by multiple computers on a local area network (LAN), such as a company intranet. The net-worm will usually infect the share in order to subsequently infect every computer that accesses the share.

Removal

Automatic action

Based on the settings of your F-Secure security product, it will either move the file to the quarantine where it cannot spread or cause harm, or remove it.

Suspect a file is incorrectly detected (a False Positive)?

A False Positive is when a file is incorrectly detected as harmful, usually because its code or behavior resembles known harmful programs. A False Positive will usually be fixed in a subsequent database update without any action needed on your part. If you wish, you may also:

  • Check for the latest database updates

    First check if your F-Secure security program is using the latest detection database updates, then try scanning the file again.

  • Submit a sample

    After checking, if you still believe the file is incorrectly detected, you can submit a sample of it to F-Secure Labs for re-analysis.

    NOTE If the file was moved to quarantine, you need to collect the file from quarantine before you can submit it.

  • Exclude a file from further scanning

    If you are certain that the file is safe and want to continue using it, you can exclude it from further scanning by the F-Secure security product.

    Note You need administrative rights to change the settings.

Find out more
Knowledge Base

Find the latest advice in our Community Knowledge Base.

Product Manual

See the manual for your F-Secure product on the Help Center.

Contact Support

Chat with or call an expert for help.

Submit a sample

Submit a file or URL for further analysis.

Technical Details

In many cases, corporate computers and servers have a few open shares, making these networks particularly vulnerable and facilitating a net-worm's rapid spread through the network. In more sophisticated cases, net-worms may even contain a list of generic passwords to use in attacking password-protected shares.

Once transferred to another host machine, some net-worms copy themselves to startup folders of different users on remote computers. In this case they can start every time a user is logged on to the machine.

A net-worm may also include a malicious payload, such as dropping keylogger program on the infected computer, or attempting to connect it to a remote server.

For more information about worms, see Article: Worms.

Date Created: -

Date Last Modified: -