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Panda Protection

Virus Encyclopedia

Welcome to the Virus Encyclopedia of Panda Security.

Encyclopedia GetVirusCard True 0

Thus.A

 
Threat LevelHigh threatDamageSevereDistributionNot widespread
Common name:Thus.A
Technical name:W97M/Thus.A
Threat level:Medium
Alias:W97M/Thursday, W97M/Thus
Type:Virus
Effects:  It deletes files from the hard disk.

Affected platforms:

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

Detection updated on:May 8, 2002
StatisticsNo
Family:VALENTIN

Brief Description 

    

Thus.A is a macro virus that reaches computers in an infected Word document (a file with a DOC extension). Then, it infects the Word template (NORMAL.DOT) and quickly spreads to all the Word documents based on it.

Thus.A has very damaging effects, as on December 13th it deletes the majority of files in the hard disk.

Visible Symptoms 

    

Thus.A activates every December 13th. On that date, users will notice that several files are missing from the hard disk.