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Danger level 10
Type: Worms
Common infection symptoms:
  • Installs itself without permissions
  • Connects to the internet without permission
  • Annoying Pop-up's
  • Slow Computer
Other mutations known as:


Worm.Win32.Netsky is a mass-mailing worm which has been created to affect computer systems which run on certain versions of Microsoft Windows. This worm is programmed to send itself out to the email addresses which are included in the contact list in the affected computer. In order to activate Worm.Win32.Netsky, the user needs to open an e-mail attachment which has the worm. Usually the zipped file size is approximately 23KB, while if you extract the file, then it is around 39KB in size.

There are a few ways to get infected by Worm.Win32.Netsky. One has to be careful when one downloads shareware or freeware programs. It is common for them to be bundled with malicious spyware. Also, the user has to be careful while using any peer-to-peer software. It is possible to download an infected file carrying something like Worm.Win32.Netsky by mistake. Not to mention the perpetually popular malware distribution method which involves fake online video players. If the user stumbles across them, he is offered an automatic video codec download, which is supposed to help him watch the video. Unfortunately, that “codec” might host none the other but Worm.Win32.Netsky.

When this worm roots in your system it slows down your computer performance and sends a mass of annoying pop-ups and taskbar warnings. It can also create new icons on your desktop or change your desktop background to its liking. There might be instances of forceful redirection when you browse the Internet and browser hijacking. Not to mention, that you might also receive this fake spyware alert:

Spyware Alert!
Your computer is infected with spyware. It could damage your critical files or expose your private data on the Internet. Click here to register your copy of Worm.Win32.Netsky and remove spyware threats from your PC.

In a sense by sending this kind of message Worm.Win32.Netsky behaves very much like rogue antispyware, but in the end, the bottom line is that you need to remove Worm.Win32.Netsky from your computer immediately. Manual removal is not recommended unless you are an IT professional. Rather than that, acquire a reliable malware removal tool, which will erase Worm.Win32.Netsky automatically.

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  1. ferro Feb 9, 2013


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