Virus Database

Cha.2391

Description Cha.2391

It's a harmless memory resident parasitic virus. It hooks INT 1Ch, 21h and writes itself to the COM- and EXE-files ands at their execution. It contains the internal text string "cha-cha-chacha-cha-cha".

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I-Worm.Magistr.b

Description I-Worm.Magistr.b

This is an improved version of the original "Magistr" email worm and Win32 PE EXE files infector.
The differences are:
The payload routine is imoroved by another branch that will overwrite a WIN.COM file in the Windows directory and an NTLDR file in the C: root directory with a program that erases hard drive data upon start-up. This is done for local and for network shared drives as well.
While infecting a local file, this virus encrypts an entry routine with a key that depends on the computer's name. This causes infected-machine disinfection to be much more difficult.
To spread via e-mail, the worm also looks for Eudora email data as well.
While infecting network drives the worm looks for more Windows directories names:
WINNT
WINDOWS
WIN95
WIN98
WINME
WIN2000
WIN2K
WINXP
The worm copy is then registered in WIN.INI and SYSTEM.INI files in the following sections:
WIN.INI: Windows Run
SYSTEM.INI: boot shell
The worm looks for GIF files, and can send GIF images out of the computer, as well as clean DOC files (as the original version does).
The worm destroys .NTZ files each time if such files are located. It also attempts to terminate the ZoneAlarm firewall if it is installed, but fails and ZoneAlarm continues to protect the machine.

I-Worm.Magold.a

Description I-Worm.Magold.a

This worm spreads via the Internet as an attachment to infected emails. It also spreads via IRC channels, local and file sharing networks. The worm is able to spread in WinNT systems only (WinNT, Win2000, WinXP).
The worm itself is a Windows PE EXE file approximately 241Kb in size. It is compressed using UPX; the decompressed file is approximately 650KB in size. It is written in Borland C++.
Installation
When installing, the worm copies itself to the Windows directory under the names "raVe.exe" and "Maya Gold.scr". It then registers these files in as a key in the system registry to ensure that the files are run each time the system is started.
[HKLMSoftwareMicrosoftWindowsCurrentVersionRun]
raVe = %WinDir% aVe.exe
[HKLMSOFTWAREClassesexefileshellopencommand]
@=%WinDir% aVe.exe "%1" %*"
[HKLMSOFTWAREClassescomfileshellopencommand]
@=%WinDir% aVe.exe "%1" %*"
[HKLMSOFTWAREClassesatfileshellopencommand]
@=%WinDir% aVe.exe "%1" %*"
[HKLMSOFTWAREClassespiffileshellopencommand]
@=%WinDir% aVe.exe "%1" %*"
[HKLMSOFTWAREClassesscrfileshellopencommand]
@=%WinDir% aVe.exe "%1" %*"
The worm also creates a subdirectory " aVe" in Windows directory and copies itself to there under the name "Maya Gold.scr". This directory is then registered in the system registry as a Kazaa shared folder:
[HKCUSoftwareKazaaTransfer]
DlDir0 = %WinDir% aVe
This enables the worm to spread via the Kazaa P2P file-sharing network.
The worm also creates three registry keys for its own use:
[HKLMSoftware aVe]
beepul
halozat
irc
The worm then displays a fake error message:

Propagation via email
To send infected messages the worm connects directly to the default SMTP server. The worm harvests email addresses from the WAB (Windows Address Book) database (Windows Address Book) and *.HTML files.
Infected messages:
From:
erotika@lap.hu
Subject:
Maya Gold-os kepernyokimelo!
Attachment:
Maya Gold.scr
Message body (original in Hungarian):
Tisztelt cÜm!
Az EROTIKA.LAP.HU nÝzettsÝgÝnek n?velÝse ÝrdekÝben egy kis ÜzelÜt?t kÜvÓn adni kÜnÓlatÓb?l az Internet felhasznÓl?knak!
FIGYELEM: A 'Maya Gold.scr' nevv csatolt ÓllomÓny egy kÝperny?vÝd?. Mint a neve is mutatja Maya Gold porn?szÜnÝszn?r?l tartalmaz k?l?nb?z? kÝpeket. Az ÓllomÓnyt ajÓnlott el?bb a lemezre menteni, majd utÓna futtatni.
Amennyiben valami problÝmÓja, kÝrdÝse van, Ürjon a k?vetkez? cÜmre: erotika@lap.hu
_dv?zlettel: EROTIKA.LAP.HU
Translation:
Dear Recipient!
The EROTIKA.LAP.HU website is providing Internet users with a preview of its offerings, in the hope of increasing its popularity.
Attention: The attached "Maya Gold.scr" file is a screen saver. As the name implies, it contains pictures of Maya Gold, the acclaimed porn diva.
It is recommeded to save the file to disk before running it.
If you have any problems or questions, please contact us at:
erotika@lap.hu
Best Wishes: EROTIKA.LAP.HU
The worm is only activated when a user opens the attachment by clicking on it. The worm then installs itself to the system and starts propagating.
Propagation via networked and floppy drives
The worm copies itself to shared network drives. To ensure that the copy will run on the remote victim machine, the worm writes an auto-start command to the victim machine "Autorun.inf":
open=Maya Gold.scr
The worm also copies itself under the name "Maya Gold.scr" to the A: floppy drive.
Propagation via IRC
The worm affects two IRC clients and writes script files to their directories. These scripts send a copy of the worm file to IRC channels to users that join infected channels. The affected IRC clients and script file names are:
mIRC - script.ini
Pirch - events.ini
Propagation via file sharing networks
The worm affects the following P2P networks:
Bearshare
Edonkey
Gnucleus
Grokster
Kazaa
Limewire
Morpheus
Shareaza
The worm copies itself to these networks under the name "Maya Gold.scr".
The worm also copies itself to the "ICQShared Folder".
Other
The worm downloads and runs upgrades from "ftp.fw.hu".
The worm may open the site "http://www.offspring.com".
The worm searches for and terminates active anti-virus processes.
At a certain stage after being activated, the worm:
changes the colour of active application windows

won't allow mouse cursor to get to the top of the screen (blocks it)
creates numerous empty "raVe%%%.txt" files on the Desktop

changes active application window header to:
=:-) OFFSPRING is coOL =:-) PUNK'S NOT DEAD =:-)
sends the following text to the printer:
SEGITS NEKEM!!!
En a nyomtato vagyok, es arra szeretnelek megkerni, hogy beszelj mar a Windows-zal, mert ez mar nem allapot!!
Allandoan a hulye kerdeseivel, kereseivel zaklat, 'Van meg lapod?', 'Tudsz szinesen nyomtatni?', 'Ezt most fektetve szeretnem!', 'Keszen allsz mar?'.
Gondolom te is egyetertesz velem, hogy ez igy nem mehet tovabb! Valamit tenni kell!
UDVOZLETTEL MEGERTO ES SEGITOKESZ BARATOD: A NYOMTATO
PUNK'S NOT DEAD
=:-)
=:-)
=:-)
The smileys are repeated to the bottom of the page. The Hungarian text is a complaint about the low quality and problems of printer implementation in Microsoft Windows.
The worm contains the text string:
AZERT SEM KOSZONOK BE BE BE! SOT! EBBEN SINCS KOSZONET! --- raVe-1-- areWera

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