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Panda Protection

Virus Encyclopedia

Welcome to the Virus Encyclopedia of Panda Security.

Sinowal.WRI

Threat LevelLow threatDamageHighDistributionNot widespread
Common name:Sinowal.WRI
Technical name:W32/Sinowal.WRI.worm
Threat level:Medium
Type:Virus
Subtype: Worm
Effects:   It spreads and affects other computers, and has damaging effects on the affected computer.
Affected platforms:

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

First detected on:Nov. 30, 2009
Detection updated on:Dec. 1, 2009
StatisticsNo

Brief Description 

    
Sinowal.WRI is a virus that also has the characteristics of a worm.
Sinowal.WRI gets into a computer via e-mail, the Internet, floppy disks, etc, and it spreads by inserting its code in other files and programs. Its effects can range from simply annoying to destructive.
Furthermore, due to its worm characteristics, Sinowal.WRI also spreads by sending out copies of itself. Its main objective is to collapse computers and networks, preventing users from working with the affected computer.

 

It captures certain information entered or saved by the user, with the corresponding threat to privacy: passwords saved by certain Windows services.

 

It uses stealth techniques to avoid being detected by the user:

  • It uses techniques included in its code to hide itself while it is active.
  • It injects itself in running processes.

 

It uses several methods in order to avoid detection by antivirus companies:

  • It terminates its own execution if it detects that it is being executed in a virtual machine environment, such as VMWare or VirtualPC.

 

Sinowal.WRI uses the following propagation or distribution methods:

  • Exploiting vulnerabilities with the intervention of the user: exploiting vulnerabilities in file formats or applications. To exploit them successfully it needs the intervention of the user: opening files, viewing malicious web pages, reading emails, etc.
  • Via Internet, exploiting remote vulnerabilities: attacking random IP addresses, in which it tries to insert a copy of itself by exploiting one or more vulnerabilities.