F-Secure Virus Descriptions : Voltan
[Summary] | [Detailed Description] | [Detection]
Voltan is a mass mailing worm that was found late evening on
October 24th, 2003
The worm arrives in emails which contain a link to a web page
from where a file could be downloaded. The emails contain text in
Italian.
The mass-mailing routine of Voltan does not send the worm in the
email. It sends a link to a website which first displays a
message:
Il momento è catartico... per parafrasare un noto comico di ZELIG !!!
[The moment is cathartic... to paraphrase a famous comedian from ZELIG !!!]
then offers a file named
'zelig.scr' for download. 'zelig.scr' is to body of the worm.
When the file is opened it opens a webpage in the default
browser with the following content:
Congratulazioni !
Il "CATARTICO" screen saver è stato installato con successo .
[Congratulations !
The CATHARTIC screen saver has been successfully installed]
It creates a value in the registry as
'HKLM\Control Panel\Screen Saver.Marquee\text'
with the text:
A volte ti sento cos? vicina...A volte ti sento cos? lontana
...Certo che hai proprio un cellulare di m**da!
[Sometimes I can feel you so close...Sometimes I feel you so
distant ...You sure have a sh*tty cell phone!]
To send emails Voltan first locates the Windows Address Book
and reads the list of contacts from there. Using its own SMTP
engine it sends the following emails to the contacts:
From: user@of.infected.computer
To: friend@of.the.user.of.the.infected.computer
Subject: Il momento e' catartico [The moment is cathartic]
Body: Ricevo e cortesemente inoltro,.... un premio per la genialita
hanno reso mitico un salva schermo scaricalo, "poesie catartiche",
che non sai cosa ti perdi
ciao
[I received this and I'm forwarding it,... an award to genius
they made this great a screen-saver download it, "cathartic poems",
you don't know what you're missing]
If the worm can not find the email address of the user of the
infected computer it uses a hardcoded address instead.
Voltan uses system DLLs which are not available on some
systems. The worm does not work on Windows 95/98/ME and
Windows NT4.
Detection in F-Secure Anti-Virus was published on October 25, 2003 in
update:
[FSAV_Database_Version]
Version=2003-10-25_03
Write-up:
Katrin Tocheva, Veli-Jussi Kesti
Translations:
Fabrizio Cassoni
Technical Details:
Gergely Erdelyi
F-Secure Corporation, October 25th, 2003
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