Threat Explorer

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19 March 2003
13 February 2007
Systems Affected:

VBS.Suconelo is an intended mass-mailing worm. The submitted sample does not execute, due to errors in the code.

The purpose of VBS.Suconelo is to:
  • Send itself to the email addresses in the Microsoft Outlook address book
  • Delete the files
  • Modify the configuration settings
  • Display various messages

Antivirus Protection Dates

  • Initial Rapid Release version 20 March 2003
  • Latest Rapid Release version 28 September 2010 revision 054
  • Initial Daily Certified version 20 March 2003
  • Latest Daily Certified version 28 September 2010 revision 036
  • Initial Weekly Certified release date 26 March 2003
Click here for a more detailed description of Rapid Release and Daily Certified virus definitions.

When VBS.Suconelo is executed, it attempts to do the following:
  1. Create the folder, SSystem%\Suconelo.
  2. Create the file, %System\Consuelo.txt, which contains this text:

    Consuelo I just wanna that you know the truth
    I just... just... love you.
    It's all that i can say...
    Bye baby, Consuelo don't forget it... I love you...
  3. Do one of the following:
    • If the registry key:


      contains the value 1, the following message is displayed:

      Hi, You're <offensive word> by Nincubus/ViriiZone!!!
      Don't be fooled or <offensive word>, be care!!!
    • If that key and value do not exist, the worm creates a random email, and sends itself to all the addresses in the Microsoft Outlook Address Book. Then, it sets the registry key to "1".

      The email is composed using randomly chosen subjects, messages, and attachments. Refer to the "Email details" section later in this writeup for more details.

  4. Delete the following program files:
    • %Windir%\Regedit.exe
    • %Windir%\Regedt32.exe
    • %System%\Regedit.exe
    • %System%\Regedt32.exe
    • %Windir%\Cmd.exe
    • %System%\Cmd.exe
    • %Windir%\Sysedit.exe
    • %System%\Sysedit.exe
    • %Windir%\Msconfig.exe
    • %System%\Msconfig.exe

  5. Delete the following folders from the %ProgramFiles% folder:
    • AntiViral Toolkit Pro
    • Command Software\F-PROT95
    • McAfee\VirusScan
    • Norton AntiVirus
    • Panda Software\Panda Antivirus Titanium
    • Trend Micro\PC-cillin 2002
    • AVPersonal
    • Trend PC-cillin 98
    • Perav
    • McAfee\McAfee VirusScan
    • Panda Software\Panda Antivirus 6.0
    • Trend Micro\PC-cillin 2000
    • AnalogX\Script Defender
    • F-Secure\Anti-Virus
    • Zone Labs\ZoneAlarm
    • ESET\NOD32
    • McAfee VirusScan Professional Edition 7.0
Email details
  • Subjects:
    • Consuelo Pics    
    •  Virus Alert!!            
    • Norton New Patches    
    • McAfee VirusScan Patches
    • Kaspersky AVP Patches              
    • Hacking hotmail                    
    • Hackers Tutorials    
    • Hackear hotmail  
    • Parches para Norton 2003            
    • Parches para McAfee VirusScan 2003  
    • Parches para kaspersky AVP          
    • Fotos de Consuelo                  
    • Alertas de virus!!                  
    • Hacker Tutorials                    
    • Fwd: Horoscopo                                      
    • Fwd: Love Test                                      
    • Re: The File Please                                
    • Re: El archivo...                                  
    • Safety                                              
    • This Pics are only for you ;

  • Message:
    • Check this consuelo pics, only for you, see the attachment
    • New Virus Alert!!! Be Care With VBS/DeathLetter, in the atachment i send you an antivirus, by accepting, you'll be protected :)
    • Open this New patches of Norton for Windows 9x/Me/2000/NT/XP be care with VBS/DeathLetter, this is an ilegal patch, but don't worry. We distributed this with Symantec permission, so don't worry ;)
    • Open this New patches of McAfee for Windows 9x/Me/2000/NT/XP be care with VBS/DeathLetter, this is an ilegal patch, but don't worry. We distributed this with McAfee permission, so don't worry ;)
    • Open this New patches of Kaspersky AVP for Windows 9x/Me/2000/NT/XP be care with VBS/DeathLetter, this is an ilegal patch, but don't worry. We distributed this with kaspersky permission, so don't worry ;)
    • Hey!!! There are new hacking tutorials by hacking hotmail :D Have fun!
    • Hi, this is a file that you can access to another machine without his or her permission. Have Fun!!!
    • Que onda... te envío estos tutoriales para que aprendas a hackear a los que te caen mal y están en hotmail. Diviertete!!!
    • Hola!!!, por ahí dicen que hay alertas para el virus DeathLetter, así que ejecuta estos parches para que no seas infectado :)
    • ve las fotos de Consuelo, son solo para tí!!! ;)
    • Hola, te envío la lista de los nuevos virus, espero que no seas afectado!!! van adjuntos los mensajes de los virus y los nombres de archivos...
    • Hi, I sent you Hacker tutorials by hacking the bad person who causes bad to you...
    • The horoscopo Test is in this file, have Fun!
    • Love test is in this file, Have Fun!
    • This is the file you ask for...
    • Aquí está el archivo por el que pregunaste ;-)
    • for your PC, now, then can enter to our machines just by clicking in Haktek and putting our IP, so, i sent you a Firewall 'cause I wanna Protect you!
    • Check This pics!!!

  • Attachments:
    • Consuelo_pics
    • Protector
    • Patch
    • Hacking_hotmail.txt
    • Hacking
    • Hackeando
    • Parches
    • Fotos_de_consuelo list.txt
    • Hacking
    • Tutorials
    • Horoscopo
    • Lovetest
    • Parche_seguridad_iexplorer
    • Firewall consuelo_pics_installer


Symantec Security Response encourages all users and administrators to adhere to the following basic security "best practices":

  • Use a firewall to block all incoming connections from the Internet to services that should not be publicly available. By default, you should deny all incoming connections and only allow services you explicitly want to offer to the outside world.
  • Enforce a password policy. Complex passwords make it difficult to crack password files on compromised computers. This helps to prevent or limit damage when a computer is compromised.
  • Ensure that programs and users of the computer use the lowest level of privileges necessary to complete a task. When prompted for a root or UAC password, ensure that the program asking for administration-level access is a legitimate application.
  • Disable AutoPlay to prevent the automatic launching of executable files on network and removable drives, and disconnect the drives when not required. If write access is not required, enable read-only mode if the option is available.
  • Turn off file sharing if not needed. If file sharing is required, use ACLs and password protection to limit access. Disable anonymous access to shared folders. Grant access only to user accounts with strong passwords to folders that must be shared.
  • Turn off and remove unnecessary services. By default, many operating systems install auxiliary services that are not critical. These services are avenues of attack. If they are removed, threats have less avenues of attack.
  • If a threat exploits one or more network services, disable, or block access to, those services until a patch is applied.
  • Always keep your patch levels up-to-date, especially on computers that host public services and are accessible through the firewall, such as HTTP, FTP, mail, and DNS services.
  • Configure your email server to block or remove email that contains file attachments that are commonly used to spread threats, such as .vbs, .bat, .exe, .pif and .scr files.
  • Isolate compromised computers quickly to prevent threats from spreading further. Perform a forensic analysis and restore the computers using trusted media.
  • Train employees not to open attachments unless they are expecting them. Also, do not execute software that is downloaded from the Internet unless it has been scanned for viruses. Simply visiting a compromised Web site can cause infection if certain browser vulnerabilities are not patched.
  • If Bluetooth is not required for mobile devices, it should be turned off. If you require its use, ensure that the device's visibility is set to "Hidden" so that it cannot be scanned by other Bluetooth devices. If device pairing must be used, ensure that all devices are set to "Unauthorized", requiring authorization for each connection request. Do not accept applications that are unsigned or sent from unknown sources.
  • For further information on the terms used in this document, please refer to the Security Response glossary.

The following instructions pertain to all current and recent Symantec antivirus products, including the Symantec AntiVirus and Norton AntiVirus product lines.
  1. Update the virus definitions.
  2. Run a full system scan and delete all the files detected as VBS.Suconelo.

For specific details on each of these steps, read the following instructions.

1. Updating the virus definitions
Symantec Security Response fully tests all the virus definitions for quality assurance before they are posted to our servers. There are two ways to obtain the most recent virus definitions:
  • Running LiveUpdate, which is the easiest way to obtain virus definitions: These virus definitions are posted to the LiveUpdate servers once each week (usually on Wednesdays), unless there is a major virus outbreak. To determine whether definitions for this threat are available by LiveUpdate, refer to the Virus Definitions (LiveUpdate).
  • Downloading the definitions using the Intelligent Updater: The Intelligent Updater virus definitions are posted on U.S. business days (Monday through Friday). You should download the definitions from the Symantec Security Response Web site and manually install them. To determine whether definitions for this threat are available by the Intelligent Updater, refer to the Virus Definitions (Intelligent Updater).

    The Intelligent Updater virus definitions are available here. For detailed instructions on how to download and install the Intelligent Updater virus definitions from the Symantec Security Response Web site, click here.

2. Scanning for and deleting the infected files
  1. Start your Symantec antivirus program and make sure that it is configured to scan all the files.
  2. Run a full system scan.
  3. If any files are detected as infected with VBS.Suconelo, click Delete.

Writeup By: Scott Gettis