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Panda Protection

Virus Encyclopedia

Welcome to the Virus Encyclopedia of Panda Security.

Tasin.A

Threat LevelHigh threatDamageSevereDistributionNot widespread
Common name:Tasin.A
Technical name:W32/Tasin.A.worm
Threat level:Medium
Type:Worm
Effects:  

It spreads via e-mail messages using its own SMTP engine. It attempts to delete files with certain extensions.

Affected platforms:

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

First detected on:Nov. 19, 2004
Detection updated on:Feb. 18, 2007
StatisticsNo
Proactive protection:
Yes, using TruPrevent Technologies
Country of origin:SPAIN

Brief Description 

    

Tasin.A is a worm that spreads via e-mail in a message with variable characteristics.

Tasin.A contains code that attempts to delete all the files with any of the following extensions: ASM, ASP, BDSPROJ, BMP, CPP, CS, CSPROJ, CSS, DOC, DPR, FRM, GIF, HTM, HTML, JPEG, JPG, MDB, MP3, NFM, NRG, PAS, PCX, PDF, PHP, PPT, RC, RC2, REG, RESX, RPT, SLN, TXT, VB, VBP, VBPROJ, WAV and XLS.

Additionally, Tasin.A establishes an HTTP connection to a certain website.

Visible Symptoms 

    

Tasin.A is easy to recognize once it has affected the computer, as it displays the following messages (in Spanish) on screen when it is run:

All of these messages attempt to distract the user's attention while the worm spreads via email. It starts counting from 0 to 50, displaying each number in a new window:

Finally, it displays a white window that occupies the entire screen and contains the following text: