W32.Mapson.Worm

SUMMARY

W32.Mapson.Worm sends itself to all the contacts in the MSN messenger contact list. The Subject line, Message body, and attachment vary. The attachment will have a .com, .exe, or .pif file extension. Also, the email may have spoofed the From field.

This worm also attempts to spread itself through the KaZaA, KaZaA Lite, eDonkey2000, Gnucleus, Limewire, Morpheus, Grokster file-sharing networks and ICQ.

If the current system month is July, the worm will display messages with the title "Lorraine Worm [GEDZAC LABS 2003]."

W32.Mapson.Worm is written in the Borland Delphi programming language and is compressed with UPX.

Protection

• Virus Definitions (LiveUpdate™ Weekly) June 7, 2003
• Virus Definitions (Intelligent Updater) June 7, 2003

Threat Assessment

Wild

• Wild Level: Medium
• Number of Infections: More than 1000
• Number of Sites: More than 10
• Geographical Distribution: Medium
• Threat Containment: Easy
• Removal: Moderate

Damage

• Damage Level: Low
• Large Scale E-mailing: Sends itself to all the email addresses in the MSN Messenger contact lists.

Distribution

• Distribution Level: High
• Subject of Email: Varies
• Name of Attachment: Varies with the .com, .exe, or .pif file extension
• Size of Attachment: 180,736 bytes
• Shared Drives: Attempts to spread through KaZaA, KaZaA Lite, eDonkey2000, Gnucleus, Limewire, Morpheus, Grokster, and ICQ

TECHNICAL DETAILS

When W32.Mapson.Worm runs, it does the following:

1. Copies itself to the %System% folder as the following:
   
   amigos.pif
   amigototote.pif
   amor-por-ti.pif
   antiwinlogon.pif
   antrox.scr
   BigBrother.pif
   bugmsn.pif
   chistesgraficos.pif
   chupamelo.pif
   comotegustan.pif
   CracksPPZ.pif
   cristina-aguilera.pif
   defaced-madonna-site.pif
   eggbrother.exe
   EICAX.COM
   existeee.pif
   financiamiento.pif
   GEDZAC.PIF
   grancarnal.exe
   grande.pif
   hackeahotmail.pif
   historial.pif
   hotmail.pif
   kamasutra.pif
   lacosha@hotmail.com
   LatinCard.pif
   linuxandmicrosoft.pif
   Lorenaaaa.pif
   Madonna_sEXY.pif
   MariaVirgen.pif
   Matrix-Trailer.pif
   mujeres.pif
   Música.pif
   No-Spam.exe
   nuevovirus.txt .pif
   Oradores.pif
   osamabinhuevoback.exe
   parejaideal.txt.pif
   petardas.pif
   porqueteamo.pif
   projimo.pif
   relacionsexual.pif
   resetarios.pif
   SARS.pif
   seguridad_en_hotmail.pif
   serhacker.pif
   Shakira.pif
   solo-a-ti.pif
   Spamno.pif
   te-pido.scr
   teamo.exe
   test-idiota.pif
   testpasion.pif
   thalialoca.pif
   TutorialVBSvirus.pif
   WindowsMediaPlayerBug.pif
   www.mfernanda.com
   www.vsantiviru.com
   www.zonaviru.com
   zorrotttas.pif
   
   NOTE: %System% is a variable. The worm locates the System folder and copies itself to that location. By default, this is C:WindowsSystem (Windows 95/98/Me), C:WinntSystem32 (Windows NT/2000), or C:WindowsSystem32 (Windows XP).
   
   
2. Creates C:Lorraine.hta.
   
   
3. Attempts to send itself to all the email addresses it finds in the MSN Messenger contact list. The Subject line, Message body, and attachment vary. Also, the email may have spoofed the From field.
   
   Some email examples:
   
   From: bigbrother@bigbrother.tv
   Subject: Big Brother te espera
   Message: Felicidades! le hemos enviado este E-Mail porque usted ha ganado un pasaje a México al programa Reality show BigBrother,si usted quiere participar en este programa deberá abrir el archivo adjunto.
   Attachment: BigBrother.pif
   
   From: support@hotmail.com
   Subject:Su cuenta de hotmail sera eliminada
   Message:Estimado usuario de hotmail,debido al trafico en el servidor y a las fallas que se han venido presentando en este presente mes,hemos de informarle que su cuenta será removida de nuestra base de datos en menos de 24 horas, le rogamos por favor lea el adjunto con los pasos para evitar que esto suceda. Atentamente el Equipo tecnico de Hotmail.
   Attachment: hotmail.pif
   
   From: support@passport.com
   Subject:10 reglas de seguridad para su cuenta de hotmail
   Message: Amable Usuario de hotmail, la razón de este mail es para darle a conocer las 10 reglas de seguridad que un usuario de passport debe tener en cuenta para evitar que su cuenta sea borrada, hackeada etc...las reglas están en el adjunto.Atentamente equipo tecnico de passport
   Attachment: seguridad_en_hotmail.pif
   
   From: hacker@hotmail.com
   Subject:+Puedo ser hacker en 24 horas?
   Message: No. La respuesta es un no rotundo. Ni en 24 ni en 48 horas :) Pero en este tiempo sí puedes tener una idea aproximada y muy básica de lo que es y de lo que "no es" un hacker y decidir si quieres convertirte en uno de ellos. Te recomiendo que leas el archivo que te mando, esta en español y es muy interesante acerca de estos temas (hacking,cracking,vulnerabilidades)
   Attachment: serhacker.pif
   
   Subject:Problema de seguridad en Windows Media Player
   Message: Windows Media Player, el reproductor multimedia que acompaña gratuitamente a los sistemas Microsoft, se ve afectado por un problema de seguridad que puede permitir la ejecución de código en la máquina del usuario atacado.por lo que recomendamos leer más acerca de este bug en el adjunto y aplicar los correspondientes parches de seguridad.
   Attachment: WindowsMediaPlayerBug.pif
   
   Subject: ¿Cómo hackear hotmail?
   Message: Hola, he estado buscando en la red y encontré esta guía de hacking que enseña como hackear hotmail,orienta al robo de cuentas, imagínate robarle la cuenta a tu novia, tu amigo etc.. a quien quieras, te lo aseguro yo ya lo leí y lo comprobé, disfrútalo.
   Attachment: hackeahotmail.pif
   
   From: notice@madonna.com
   Subject:Hackean pßgina de Madonna sospechosa de envenenar KaZaA
   Message: Tras sospecharse que Madonna contaminó la red KaZaA con algunos archivos envenenados, un grupo hacker ha contraatacado asaltando su página y colgando algunos de los temas de su último álbum en formato MP3.más de esta revelante noticia en el adjunto.|
   Attachment: defaced-madonna-site.pif
   
   Subject:+Que le atrae a las mujeres?
   Message: Un reciente estudio del comportamiento en la mujer afirma que a ellas les atrae de los hombreses la cara, las manos y su movimiento, si quiere saber más lea por favor el articulo que le adjuntamos
   Attachment: mujeres.pif
   
   From: Anti-Spam@campaña.com
   Subject:SPAM La proxima gran epidemia
   Message: El Spam esta avanzando constantemente y a logrado saturar nuestros correos electronicostal vez sea el principio de una epidemia mundial de esta peste que nos tiene cansados de la publicidad
   Attachment: No-Spam.exe
   
   From: test@hispasec.com
   Subject:Tests antivirus para comprobar la protección del e-mail
   Message: Hispasec pone a disposición de todos los usuarios dos tests para comprobar el correcto funcionamiento de la protección antivirus del correo electrónico. El primero de ellos nos indicará la correcta instalación y buen funcionamiento del antivirus, mientras que el segundo determinará la capacidad de detección proactiva para identificar gusanos que explotan vulnerabilidades conocidas.
   Attachment: EICAX.COM
   
   From: Amor@teamo.com
   Subject:Te amo
   Message: Lo amo a usted por que es la persona más linda del mundo.
   Attachment: teamo.exe
   
   From: Latincards@latincards.com
   Subject:LatinCards
   Message: Le han enviado una LatinCard para poder visualizarla abra el adjuntoGracias.
   Attachment: LatinCard.pif
   
   Subject: Chistes Grßficos
   Message: Estos son los chistes grßficos que mßs me han gustado espero que a ti también.
   Attachment: chistesgraficos.pif
   
   From: lorena@hotmail.com
   Subject: Te Amo
   Message: Averigua por que.....
   Attachment: porqueteamo.pif
   
   Subject: Test de pasi
   Message: Test de pasión para usted y su pareja, contéstelo y descubra cuanto desea y quiere a su pareja.
   Attachment: testpasion.pif
   
   From: Maria_fernanda@mfernanda.com
   Subject: Re: Dime que te parece
   Message: Hola, como estás? hace tiempo que no se nada de ti... quería hablar contigo sobre un tema.Se trata de mi nuevo portal en el que quiero ofrecer toda mi recopilación de links en espanol. Me gustaría que le echaras un vistazo y me dijeras que tal lo ves tu, si te gusta o cambiarías algo
   Attachment: www.mfernanda.com
   
   Subject: RE: Test de idiotes
   Message: Compruebe si usted es un verdadero idiota.
   Attachment: test-idiota.pif
   
   Subject: Kamasutra
   Message: Kamasutra el arte del sexo
   Attachment: kamasutra.pif
   
   
4. Attempts to copy itself to the following folders:
   
   C:Program FilesKaZaAMy Shared Folder
   C:Program Filesedonkey2000incoming
   C:Program Filesgnucleusdownloads
   C:Program Filesicqshared files
   C:Program Fileskazaa litemy shared folders
   C:Program Fileslimewireshared
   C:Program Filesmorpheusmy shared folder
   C:Program FilesGroksterMy Grokster
   
   as:
   
   Sexy Bikini .gif .exe
   Sexo en la playa con .gif .exe
   las pelotas de .gif .exe
   Desnuda en la playa .gif .exe
   Nude Pic .gif .exe
   Sexy Beach .gif .exe
   Galilea Montijo.gif .exe
   Shakira.gif .exe
   Britney Spears.gif .exe
   Lorena.gif .exe
   Halle berry.gif .exe
   Cameron dias.gif .exe
   Pink.gif .exe
   Thalia.gif .exe
   Paulina Rubio.gif .exe
   Francini.gif .exe
   Brenda.gif .exe
   Celine Dion.gif .exe
   Kylie Minogue.gif .exe
   Laura Pausini.gif .exe
   Lili Brillanti.gif .exe
   Angelica Vale.gif .exe
   Alejandra Guzman.gif .exe
   
   
5. If the current system month is July, the worm will display the following messages:
   
   
   
   
   

Recommendations

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

• Turn off and remove unneeded services. By default, many operating systems install auxiliary services that are not critical, such as an FTP server, telnet, and a Web server. These services are avenues of attack. If they are removed, blended threats have less avenues of attack and you have fewer services to maintain through patch updates.
• If a blended 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 (for example, all Windows-based computers should have the current Service Pack installed.). Additionally, please apply any security updates that are mentioned in this writeup, in trusted Security Bulletins, or on vendor Web sites.
• 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.
• Configure your email server to block or remove email that contains file attachments that are commonly used to spread viruses, such as .vbs, .bat, .exe, .pif and .scr files.
• Isolate infected computers quickly to prevent further compromising your organization. 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.

REMOVAL

The following instructions pertain to all current and recent Symantec antivirus products, including the Symantec AntiVirus and Norton AntiVirus product lines.

1. Disable System Restore (Windows Me/XP).
2. Update the virus definitions.
3. Run a full system scan and delete all the files detected as W32.Mapson.Worm.

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

1. Disabling System Restore (Windows Me/XP)
If you are running Windows Me or Windows XP, we recommend that you temporarily turn off System Restore. Windows Me/XP uses this feature, which is enabled by default, to restore the files on your computer in case they become damaged. If a virus, worm, or Trojan infects a computer, System Restore may back up the virus, worm, or Trojan on the computer.

Windows prevents outside programs, including antivirus programs, from modifying System Restore. Therefore, antivirus programs or tools cannot remove threats in the System Restore folder. As a result, System Restore has the potential of restoring an infected file on your computer, even after you have cleaned the infected files from all the other locations.

Also, a virus scan may detect a threat in the System Restore folder even though you have removed the threat.

For instructions on how to turn off System Restore, read your Windows documentation, or one of the following articles:

• "How to disable or enable Windows Me System Restore"
• "How to turn off or turn on Windows XP System Restore"

For additional information, and an alternative to disabling Windows Me System Restore, see the Microsoft Knowledge Base article, "Antivirus Tools Cannot Clean Infected Files in the _Restore Folder," Article ID: Q263455.

2. 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: Read "How to update virus definition files using the Intelligent Updater" for detailed instructions.

3. 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.
   • For Norton AntiVirus consumer products: Read the document, "How to configure Norton AntiVirus to scan all files."
   • For Symantec AntiVirus Enterprise products: Read the document, "How to verify that a Symantec Corporate antivirus product is set to scan all files."
2. Run a full system scan.
3. If any files are detected as infected with W32.Mapson.Worm, click Delete.