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Panda Protection

Virus Encyclopedia

Welcome to the Virus Encyclopedia of Panda Security.

Daol.A

Threat LevelHigh threatDamageSevereDistributionNot widespread
Common name:Daol.A
Technical name:W32/Daol.A
Threat level:Medium
Type:Virus
Effects:  It exploits the Internet Zone and MHTML vulnerabilities to download itself from an infected website. It deletes system files and disables the Windows Registry Editor
Affected platforms:

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

Detection updated on:Dec. 26, 2003
StatisticsNo
Country of origin:PERU

Brief Description 

    

Daol.A is a virus that exploits the Internet Zone and MHTML vulnerabilities. When the user access an infected website, the virus exploits these vulnerabilities to download to the computer and run itself.

Daol.A infects all the files with an EXE, SCR, ASP, PLG, HTM, HTML, VBS or VBE extension. If the infected file has an ASP, PLG, HTM, HTML, VBS or VBE extension, the virus encrypts the original contents of the file. The user will then be able to edit the infected file and add new code, but not to modify the original contents.

Visible Symptoms 

    

Daol.A is easy to recognize, as it displays the following messages on screen on the 26 of every month: