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Panda Protection

Virus Encyclopedia

Welcome to the Virus Encyclopedia of Panda Security.

Tasin.B

Threat LevelHigh threatDamageSevereDistributionNot widespread
Common name:Tasin.B
Technical name:W32/Tasin.B.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

First detected on:Nov. 22, 2004
Detection updated on:Nov. 22, 2004
StatisticsNo
Proactive protection:
Yes, using TruPrevent Technologies
Country of origin:SPAIN

Brief Description 

    

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

Tasin.B 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.B attempts to download a DLL (Dynamic Link Library) from the Internet.

Visible Symptoms 

    

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