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Panda Protection

Virus Encyclopedia

Welcome to the Virus Encyclopedia of Panda Security.

Netsky.U

Threat LevelHigh threatDamageSevereDistributionNot widespread
Common name:Netsky.U
Technical name:W32/Netsky.U.worm
Threat level:Medium
Alias:W32/NetSky.U@mm, WORM_NETSKY.U, I-Worm.Netsky.v, W32/Netsky-U
Type:Worm
Effects:  

It attempts to launch Denial of Service attacks against several web pages and installs a backdoor that listens to the TCP port 6789.

Affected platforms:

Windows 2003/XP/2000/NT/ME/98/95

First detected on:April 8, 2004
Detection updated on:April 15, 2004
StatisticsNo

Brief Description 

    

Netsky.U is a worm that attempts to launch DoS (Denial of Service) attacks against several web pages, between April 14 and 23, inclusive.

In addition, Netsky.U installs a backdoor, which listens to the TCP port 6789.

Netsky.U spreads via e-mail in a message with variable characteristics. However, it always includes an attached file with a PIF extension.

Visible Symptoms 

    

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

However, Netsky.U spreads in an e-mail message that always includes an attached file with a PIF extension.