Threat Description



Aliases: Worm, Win32.Worm, worm.win32, Worm:w32, Win32.Worm.js, Worm:inf
Category: Malware
Type: Worm
Platform: W32


A program which uses computer or network resources to make complete copies of itself. May include code or other malware to damage both the system and the network.


Automatic action

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


You may wish to refer to the Support Community for further assistance. You may also refer to General Removal Instructions and/or Eliminating Local Network Outbreak for a general guide on alternative disinfection actions.

Technical Details

A worm is a parasitic program capable of replicating by sending copies of itself to new hosts (computers, servers, mobile devices, etc) over a network and other transferable media.

At one time, worms were considered more of a nuisance than a threat, but today it has become increasingly common among malware authors to create malicious, complex worms that can perform malicious activities such as data-stealing or launching Denial of Service (DoS) attacks. Worms may now also be used to deliver other threats, such as viruses or trojans.

There are multiple worm sub-types, which are defined by the platform or medium they use to spread:

  • An Email-Worm will spread copies of itself using e-mail messages
  • An IRC-Worm spreads through Internet Relay Chat (IRC) channels
  • An SMS-Worm multiplies using the Short Message System (SMS) of telecommunications networks.


Suspect a file or URL was wrongly detected? Submit a sample to our Labs for analysis

Submit Now

Scan & clean your PC

F-Secure Online Scanner will scan and clean your PC in just a few minutes for free

Learn More