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Panda Protection

Virus Encyclopedia

Welcome to the Virus Encyclopedia of Panda Security.

Antares.A

Threat LevelLow threatDamageHighDistributionNot widespread
Common name:Antares.A
Technical name:W32/Antares.A
Threat level:Medium
Type:Virus
Effects:   It carries out damaging actions on the affected computer. It uses anti-monitoring techniques in order to prevent it being detected by antivirus companies. It does not spread automatically using its own means.
Affected platforms:

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

First detected on:April 14, 2010
Detection updated on:April 27, 2010
StatisticsNo

Brief Description 

    

Antares.A is a virus that spreads to other computers by copying its code to other files or programs.

 

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

  • It terminates its own execution if it detects that a debugging program is active.

 

Antares.A 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.
  • File infection: it infects different types of files, which are then distributed through any of the usual means: floppy disks, email messages with attachments, Internet download, files transferred via FTP, IRC channels, P2P file sharing networks, etc.

 

Antares.A uses the following infection strategies:

  • Resident: once it has been run, the virus goes memory resident and stops functions belonging to the operating system. Therefore, every time the operating system or an application tries to access any of these functions, the virus will activate and infect new files.
  • Polymorphic: it encrypts itself in a different way with each infection it carries out. In order to do this, it uses different keys and operations. As a result, the virus has different characteristics in each new infection, which makes it difficult for antivirus pro-grams to detect this virus.
  • EPO (Entry Point Obscuring): it infects programs that it allows to work as usual until a given point. Then, the virus takes control of the program and runs its own code.
  • Direct action: it infects a specific number of executable files every time the virus activates, without going memory resident.