Virus Database

Waca.1700

Description Waca.1700

It is a very dangerous memory resident parasitic virus. It hooks INT 21h and writes itself to the end of .COM and .EXE files (except COMMAND.COM and BACKUP.EXE) that are executed or opened. Depending on the system timer the virus deletes files with extensions: DOC, HLP, PAS, ARJ. Depending on its random counter the virus erases data on the hard drive and displays the message:
Satana brings you much pain! You forgot that !
If you want to die DO IT IN MIDNIGHT!
[acaW]

Check other viruses! Be aware! Use Antiviral Software

I-Worm.BubbleBoy

Description I-Worm.BubbleBoy

Type: Email Worm
Platform: MS Windows with Internet Explorer 5.0, MS Outlook 98/2000 or MS Outlook Express
This is an Internet virus-worm that spreads via the Internet as infected e-mail messages. The worm arrives as a message with no attachment, and the worm uses several tricks to activate its code directly from the message body. When this message is opened, the worm code takes control, gains access to system resources (disk files and system registry), processes the Outlook address book, and sends infected messages to these addresses (in a similar way that the Macro.Word97.Melissa virus does).
This is the first known modern Internet worm that spreads its copies with no attached data. As is the case with other Internet worms, a user must open the attachment in order to activate the worm's routines, which take control at the moment the message itself is opened.
The Deceptions
To spread its copies, this worm uses two means of deception. The first one is the MS Outlook feature allowing the creation of messages in HTML format. HTML messages may contain scripts that will be automatically executed at the moment the HTML message is being displayed (user opens the message). The worm uses this feature to run its code when the infected message is opened.
To spread its copies further and to bypass Internet Explorer security, the worm uses another trick. At the moment, this is termed the "Scriptlet.Typelib" security vulnerability.
This security breach allows HTML scripts to create disk files. The worm uses this breach to create a HTA-file (HTML Applications, new type appeared with IE5), which contains the main worm code. This file is created in the Startup Windows folder, and as a result, it is activated upon the next Windows startup. Being run as a local disk file, the worm's script in this HTML gains access to disk files and resources without any Internet Explorer security warning messages, connects to the Outlook address book, and spreads itself.
Technical When a user opens an infected message, the worm script embedded into this message body is automatically activated and executed by MS Outlook. This script (by using security breach) creates the "UPDATE.HTA" file in the "C:WINDOWSSTART MENUPROGRAMSSTARTUP" directory. This is the same file the worm tries to create in the "C:WINDOWSMENU INICIOPROGRAMASINICIO" directory (Spain Windows default name).
This "UPDATE.HTA" file contains the main worm code. It will be executed upon the next Windows startup, because of its location in the Startup folder. The worm has a minor bug here: it assumes that Windows is always installed in the C:WINDOWS directory. If this is not the case, the worm cannot create its file and fails to replicate further.
When the UPDATE.HTA file is executed, the worm runs the Outlook application in a hidden window and creates a new message to all recipients from the Outlook address book in the same way as the "Melissa" virus does. This new message has the HTML format and contains the worm's script in the body. The message subject is "BubbleBoy back!", and the text body appears as follows:
The BubbleBoy incident, pictures and sounds
http://www.towns.com/dorms/tom/bblboy.htm

After this message has been sent, the worm creates the following in the system registry key in order to prevent duplicate messages from being sent:
"HKEY_LOCAL_MACHINESoftwareOUTLOOK.BubbleBoy" = "OUTLOOK.BubbleBoy 1.0 by Zulu"

At the end, the worm leaves, on the screen, a window with the following text inside:
System error, delete "UPDATE.HTA" from the startup folder to solve this
problem.

The worm also changes the Windows registration data (this routine is executed at the moment the UPDATE.HTA script takes control):
RegisteredOwner = "BubbleBoy"
RegisteredOrganization = "Vandelay Industries"

Protection
Microsoft has released an update that eliminates security the "Scriptlet.Typelib" vulnerability. We strongly recommend you visit http://support.microsoft.com/support/kb/articles/Q240/3/08.ASP and install this update.
If you do not use any HTML applications (HTA-files), there is another way to prevent infection by viruses of this type (the worms and viruses that use the "Scriptlet.Typelib" security vulnerability). It is necessary to remove the file association for the .HTA extension. To do this, you have to follow several steps:
Double click the "My Computer" icon on the desktop.
In the open window, choose menu "View" -> "Optionsall".
On the "File Types" tab in the "Registered file types" listbox, select the "HTML Applicaton" item.
Click the "Remove" button and confirm action.
Close options dialogue box.

I-Worm.Burnox

Description I-Worm.Burnox

Burnox is a worm virus spreading via the Internet as an attachment in infected emails as well as spreading through the Kazaa file sharing network. The worm also downloads from a Web site and installs a backdoor trojan to the system.
The worm itself is a Windows PE EXE file about 4KB in size(when compressed by FSG, the decompressed size is about 20KB) and written in VisualBasic.
Installing
While installing the worm copies itself to the Windows system directory with the "MicrosoftUpdate.com" name and registers this file in the system registry auto-run key:
HKLMSOFTWAREMicrosoftWindowsCurrentVersionRun Windows Update = %SystemDir%MicrosoftUpdate.com

where %SystemDir% is the Windows System directory path.
The worm also creates a system registry key where it keeps its counter:
HKLMSOFTWAREMicrosoftWindowsCurrentVersion Startup = %counter%

the %counter% is set to '1', and is increased with each each worm start. Depending on this counter the worm activates its spreading routines.
Spreading: EMail
To send infected messages the worm uses MS Outlook and sends messages to all the addresses found in the Outlook address book. Ifected messages have following field text:
Subject: Important: Microsoft Windows Patch For Xp,2k,ME,98,95.

Body:

Microsoft just release this patch for all versions of Microsoft Windows.
This update patches many of the recent vulnerabilities!
It is recommended that you patch your operating system now. Though it is not required.

*Please Note* This is not the actual Microsoft patch. The attached program is Microsoft Update

Attach: MicrosoftUpdate.com

The worm activates from infected emails only in case a user clicks on the attached file. The worm then installs itself to the system and runs spreading routines.
Spreading: KaZaa
The worm creates a subdirectory with the "system16" name in the Windows system directory and copies itself to there with the names:
kmd.exe Game Trainer.exe Hacker.exe
icq2003a.exe Game.exe Hacks.exe
icq2003b.exe App.exe xbox Hacker.exe
icq2003Final.exe App Crack.exe Ps2 Bios Emulation.exe
icq2002a.exe Cracker.exe xbox Bios Hack.exe
icq2003a.exe Games.exe Burn ps2 Games To A Single CD-R.exe
icq crack.exe Games trainer.exe Burn ps2.exe
aim crack.exe Trainer.exe burn xbox.exe
icq lite.exe Cheat.exe burn dreamcast.exe
imeshv2.exe Game Hack.exe

The "system16" directory is then registered as Kazaa file sharing resource.
Installing the Backdoor Trojan
The worm downloads the "Backdoor.Slackbot" from the http://www.wawater.com Web site, stores it to the "c:unxrt.exe" file and executes it.

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