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Panda Protection

Virus Encyclopedia

Welcome to the Virus Encyclopedia of Panda Security.

Encyclopedia GetVirusCard True 0

Valla

 
Threat LevelModerate threatDamageHighDistributionNot widespread
Common name:Valla
Technical name:W32/Valla.2048
Threat level:Low
Alias:Win32.Xorala W32/Harmony.A
Type:Virus
Effects:  It infects the executable files (programs) stored in the Windows and System directories.

Affected platforms:

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

First detected on:May 16, 2003
Detection updated on:Jan. 17, 2006
StatisticsNo
Proactive protection:
Yes, using TruPrevent Technologies

Brief Description 

    

Valla is a direct action virus, this means that it carries out it infection immediately, attacking other programs. Its most destructive action consists of infecting the programs stored in the Windows and System directories.

It is very easy to become infected by Valla, as it uses many different means to spread: e-mail messages with infected attachments, computer networks, Internet downloads,  FTP, floppy disks, etc.

Visible Symptoms 

    

Valla is difficult to identify, as it does not display any warnings or messages that indicate that it has reached a computer.