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Panda Protection

Virus Encyclopedia

Welcome to the Virus Encyclopedia of Panda Security.

Caligula

Threat LevelModerate threatDamageHighDistributionNot widespread
Common name:Caligula
Technical name:W97M/Caligula.A
Threat level:Low
Alias:Caligula.A, W97M/Caligula.A
Type:Virus
Effects:  It infects Word documents and the global template. It attacks the encryption program PGP.
Affected platforms:

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

Detection updated on:Nov. 13, 2002
StatisticsNo
Family:VALENTIN

Brief Description 

    

Caligula is a macro virus  that infects Word documents, as well as the global template used by the application.

It is very easy to become infected by Caligula, as it can reach computers through any of the means normally used by viruses: CD-ROMs, e-mail messages with infected attachments, Internet downloads, FTP, etc .

Caligula changes the properties of Word documents and attacks the computers with the encryption program PGP (Pretty Good Privacy) installed in order to steal passwords.

Visible Symptoms 

    

An indication that Caligula has infected a computer are the following properties which this virus inserts in the Word documents it infects:

  • Title: W97M/Caligula Infection.
  • Author: Opic.
  • Keywords: Caligula, Opic, CodeBreakers.
  • Comments: The Best Security Is Knowing The Other Guy Hasn´t Got Any.

In order to check if the properties of your documents have been changed, access the Properties option in the File menu.

Then, the Summary tab will display the properties of the documents. When this virus has infected the active Word document, this tab will appear as follows:



In addition, when the system date is the 31st day of any month, Caligula displays the following dialog box: