Horty is a worm written in Visual Basic Script.
Disinfection & Removal
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