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Panda Protection

Virus Encyclopedia

Welcome to the Virus Encyclopedia of Panda Security.

Klys

Threat LevelHigh threatDamageSevereDistributionNot widespread
Common name:Klys
Technical name:W32/Klys
Threat level:Medium
Type:Worm
Effects:  

It opens several ports, allowing remote access to the computer, unshares shared resources, and drops the worm Cult. It spreads through the IRC channels and across networks.

Affected platforms:

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

First detected on:July 16, 2003
Detection updated on:Jan. 23, 2006
StatisticsNo
Proactive protection:
Yes, using TruPrevent Technologies

Brief Description 

    

Klys is a worm with backdoor characteristics that opens several IRC ports, allowing remote access to the affected computer, and drops the worm Cult on the system.

Additionally, if the affected computer is connected to a network, Klys unshares most shared resources, admin$ and print$ among others, so that the applications that need these resources will stop working.

Klys spreads via the chat program IRC and across shared networks.

Visible Symptoms 

    

Klys is difficult to recognize, as it does not display any messages or warnings that indicate that it has reached the computer.