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Panda Protection

Virus Encyclopedia

Welcome to the Virus Encyclopedia of Panda Security.

Fortnight.F

Threat LevelModerate threatDamageHighDistributionNot widespread
Common name:Fortnight.F
Technical name:JS/Fortnight.F.worm
Threat level:Low
Type:Worm
Effects:  It modifies the AutoSignature in Outlook. It creates shortcuts to several web pages in the Favorites menu and adds buttons to the Internet Explorer.
Affected platforms:

Windows XP/2000/NT/ME/98/95

First detected on:Oct. 23, 2003
Detection updated on:June 22, 2009
StatisticsNo

Brief Description 

    

Fortnight.F is a worm that changes the settings of the Internet Explorer browser and adds a shortcut to several web pages in the Favorites menu: AOL.com, AOL, MSN.com, MSN, YAHOO.com and YAHOO. In fact, all of these links point to the same web address.

Fortnight.F spreads via e-mail in a link to a web page hidden in the AutoSignature of a message. When the user views this message, the Internet browser is opened at the link hidden in the message. This web page contains Javascript with the worm's code that is automatically downloaded, thereby affecting the computer.

Visible Symptoms 

    

Fortnight.F is easy to recognize once it has reached the computer, as:

  • The Internet Explorer browser opens for no apparent reason.
  • Several links to web addresses are added to the Favorites menu.
  • New buttons appear in the Toolbar in Internet Explorer: