Threat Description

Horty

Details

Aliases: Horty, Kagra, Atzi, VBS/Horty, VBS/Horty.A@mm
Category: Malware
Type: Worm
Platform: VBS

Summary


Horty is a worm written in Visual Basic Script.



Removal


Automatic action

Once detected, the F-Secure security product will automatically disinfect the suspect file by either deleting it or renaming it.

More

Detailed instructions for F-Secure security products are available in the documentation found in the Downloads section of our Home - Global site.

You may also refer to the Knowledge Base on the F-Secure Community site for further assistance.



Technical Details



Variant:Horty.A

Horty.A spreads in a emails with the following characteristics:

Subject: Jenna Jameson pornostar free   superf**k+photo addresses  Body:  Do you wanna see super pornostar,Jenna Jameson,  in a special superf**k?Double click on the  attachment of this mail,and get also some  interesting sex-sex-sex addreses...  Attachment: Jenna-Jameson-free-superf**k.txt.vbs  

When a user executes the attached file, the virus shows a text using Notepad. Then it sends itself to all recipients listed in Outlook's Contacts folder.

The worm creates its copies in Windows, Windows System and Temp directories respectively kernel32.vbs, alexia.txt.vbs, Natasa.txt.vbs

It also creates copies of itself using the following file names:

c:\x-f**k.TXT.vbs  a:\kissme.TXT.vbs  b:\kissme.TXT.vbs  a:\mydick.TXT.vbs  b:\mydick.TXT.vbs  a:\drdick.TXT.vbs  b:\drdick.TXT.vbs  a:\aliens.TXT.vbs  b:\aliens.TXT.vbs  a:\thebar.TXT.vbs  b:\thebar.TXT.vbs  a:\ufoxxx.TXT.vbs  b:\ufoxxx.TXT.vbs  etc.  

The worm might sends out 4 times from one infected machine. To do this the virus modifies the registry 'HKLM\SOFTWARE\WUpdat' using its value as a marker.

If the date is 12 of May, the virus shows a message box:

Your PC has been hacked by KaGra[ATZI virus ver 2.1]         From the KaGra  

If the date is 13 of May, Horty.A tries to delete Windows folder.

F-Secure Anti-Virus detects Horty worm using the heuristics.





Technical Details:Katrin Tocheva, F-Secure Corp.; April 24th, 2002


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