W32.Mapson.D.Worm

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Discovered: August 30, 2003
Updated: February 13, 2007 12:06:34 PM
Also Known As: I-Worm.Mapson.d [KAV], W32/Mapson.gen@MM [McAfee]
Type: Worm
Systems Affected: Windows


W32.Mapson.D.Worm is a mass-mailing worm that sends itself to all the contacts in the MSN Messenger contact list and also attempts to spread through file-sharing networks and ICQ. The worm also attempts to terminate some popular antivirus, firewall, and system-monitoring programs.

The subject line, message body, and attachment vary, but the attachment will have a .bat, .com, .exe, .scr, or .pif extension. The worm may also spoof the From: field.

The worm is written in the Borland Delphi programming language and is compressed with UPX.

Antivirus Protection Dates

  • Initial Rapid Release version September 02, 2003
  • Latest Rapid Release version September 02, 2003
  • Initial Daily Certified version September 02, 2003
  • Latest Daily Certified version September 02, 2003
  • Initial Weekly Certified release date September 03, 2003

Click here for a more detailed description of Rapid Release and Daily Certified virus definitions.

Writeup By: Yana Liu

Discovered: August 30, 2003
Updated: February 13, 2007 12:06:34 PM
Also Known As: I-Worm.Mapson.d [KAV], W32/Mapson.gen@MM [McAfee]
Type: Worm
Systems Affected: Windows


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

  1. Copies itself as the following:

    %System%\RuxDLL32.exe
    C:\Falckon.vxd.

    NOTE: %System% is a variable. The worm locates the System folder and copies itself to that location. By default, this is C:\Windows\System (Windows 95/98/Me), C:\Winnt\System32 (Windows NT/2000), or C:\Windows\System32 (Windows XP).

  2. Adds the value:

    "NAV"="%System%\RuxDLL32.exe"

    to the registry key:

    HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run

    so that the worm runs each time you start Windows.

  3. Copies itself to the %System% folder as the following files:
    • amor.bat
    • amores.pif
    • animaciones.pif
    • Anti-Blaster.exe
    • Anti-BlasterWorm.exe
    • antirundll.exe
    • britney.scr
    • chica-sex.scr
    • chicas.pif
    • confidencial.pif
    • confidential-information.pif
    • consejos-mujeres.bat
    • contraseñas.pif
    • cuentashotmail.pif
    • disfuncion.pif
    • Drivers-Windows.exe
    • engrupo.pif
    • foto-alemania.pif
    • generatorviruses.exe
    • girlpic.pif
    • Hacker-Bible.pif
    • hackwebs.exe
    • hotmailhack.pif
    • hotmailhacker.exe
    • JuegoconlosMuertos.pif
    • K54403.exe
    • kamasutra.pif
    • lovecard.bat
    • mail.bat
    • mailcrack.bat
    • MatrixReloaded.scr
    • muy-interesante.pif
    • newmail.scr
    • nuevovirus.txt .pif
    • orgasmo.pif
    • P2P.pif
    • pareja.pif
    • parejaideal.pif
    • Paulina-rubio-cameron-diaz.scr
    • playa_cancun.pifposiciones.exe
    • privacidad.pif
    • Q832645.exe
    • readme.pif
    • sexual-positions.bat
    • shakira.scr
    • sharekaza.exe
    • sofíavergara.scr
    • teamo.pif
    • thalía-sex.pif
    • update.exe
    • virus-faq.pif
    • virus-list.pif
    • viruses.pif
    • vulnerabildades.pif
    • www.huevosymashuevos.com
    • www.vsantivirus.com

  4. May create the text file C:\-.txt.

  5. Terminates the following processes:
    • _AVP32.exe
    • _AVPCC.exe
    • _AVPM.exe
    • ADVXDWIN.exe
    • AGENTW.exe
    • ALERTSVC.exe
    • ALOGSERV.exe
    • AMON9X.exe
    • ANTI-TROJAN.exe
    • ANTS.exe
    • APVXDWIN.exe
    • ATCON.exe
    • ATUPDATER.exe
    • ATWATCH.exe
    • AUTODOWN.exe
    • AVCONSOL.exe
    • AVGCC32.exe
    • AVGCTRL.exe
    • AVGSERV.exe
    • AVGSERV9.exe
    • AVGW.exe
    • AVKPOP.exe
    • AVKSERV.exe
    • AVKSERVICE.exe
    • AVKWCTL9
    • AVP32.exe
    • AVPCC.exe
    • AVPM.exe
    • AVPM.exe
    • AVSCHED32.exe
    • AVSYNMGR.exe
    • PAV.exe
    • AVWINNT.exe
    • AVXMONITOR9X.exe
    • AVXMONITORNT.exe
    • AVXQUAR.exe
    • AVXQUAR.exe
    • AVXW.exe
    • BLACKD.exe
    • BLACKICE.exe
    • CCAPP.exe
    • CCEVTMGR.exe
    • CCPXYSVC.exe
    • ETRUSTCIPE.exe
    • EVPN.exe
    • EXPERT.exe
    • F-AGNT95.exe
    • FAMEH32.exe
    • F-PROT.exe
    • F-PROT95.exe
    • FP-WIN.exe
    • FRW ERV.exe
    • IOMON98.exe
    • NAV AUTO-PROTECT.exe
    • NAVAP.exe
    • NAVAPSVC.exe
    • Navapw32.exe
    • NAVENGNAVEX15.exe
    • NAVLU32.exe
    • NAVW32.exe
    • NAVWNT.exe
    • NDD32.exe
    • NPSSVC.exe
    • NSCHED32.exe
    • PCCIOMON.exe
    • PCCNTMON.exe
    • PCCWIN97.exe
    • PCCWIN98.exe
    • PCSCAN.exe
    • PERSFW.exe
    • PERSWF.exe
    • POP3TRAP.exe
    • RAV7.exe
    • VPC32.exe
    • VPTRAY.exe
    • VSCHED.exe
    • AVCONSOL.exe
    • VSECOMR.exe
    • VSHWIN32.exe
    • VSMAIN.exe
    • VSMON.exe
    • VSSTAT.exe
    • ZONEALARM.exe
    • ICLOAD95.exe
    • ICMON.exe
    • ICSUPP95.exe
    • ICLOADNT.exeICSUPPNT.exe
    • IFACE.exe
    • Regedit.exe
    • Regedit.com
    • msconfig.exe
    • sfc.exe
    • sysedit.exe
    • regedt32.exe
    • NSPCLEAN.exe
    • taskmgr.exe
    • msblast.exe
    • Mspclean
    • pqremove.exe
    • penis32.exe

  6. Copies itself to the following folders using names that are randomly chosen from a list that the worm carries:
    • %ProgramFiles%\KaZaA\My Shared Folder
    • %ProgramFiles%\edonkey2000\incoming
    • %ProgramFiles%\gnucleus\downloads
    • %ProgramFiles%\icq\shared files
    • %ProgramFiles%\kazaa lite\My Shared Folder
    • %ProgramFiles%\limewire\shared
    • %ProgramFiles%\morpheus\my shared folder
    • %ProgramFiles%\Grokster\My Grokster
    • %ProgramFiles%\WinMX\My Shared Folder
    • %ProgramFiles%\Tesla\Files
    • %ProgramFiles%\Overnet\Incoming
    • %ProgramFiles%\XoloX\Downloads
    • %ProgramFiles%\Rapigator\Share
    • %ProgramFiles%\KMD\My Shared Folder

      Some examples include:
    • Ad-aware .exe
    • Adobe Acrobat Reader (32-bit) crack all versions.exe
    • Biromsoft WebCam KeyGen.exe
    • FireWorks 4 Full version.exe
    • Kasersky Antivirus Full version.exe
    • Kazaa Download Accelerator crack all versions.exe
    • Matrix Movie .exe
    • Microsoft Internet Exlorer Full version.exe
    • Nero Burning ROM KeyGen.exe
    • Norton Antivirus Cracked.exe
    • XoloX Ultra KeyGen.exe
    • ZoneAlarm .exe

  7. 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, but the attachment will have a .bat, .com, .exe, .scr, or .pif extension. The attachment names that the worm may use are shown in step 3.

    The worm may also spoof the From: field.

    Some mail examples:

    From: virus@viruses.com
    Subject: Alerta por Virus Blaster
    Message:
    Epidemia por virus Blaster! este mail es importante no los borres, el virus Blaster se a estado reproduciendo con gran capacidad, es recomendable usar el parche correctivo para la falla de su windows, por favor no espere más y aplique el parche, es por el bienestar de su máquina.
    Attachment: Q832645.exe

    Subject: Nuevo Mensaje
    Message: Tienes un nuevo correo para verlo haz clic en del adjunto.
    Attachment: newmail.scr

    Subject: Messenger y la Privacidad.
    Message: Este documento habla sobre las desventajas de usar el Msn Messenger como mensajero instantáneo, cualquier duda se le respondera en el documento
    Attachment: privacidad.pif

    Subject: Roban cuentas de hotmail.
    Message:
    Últimamente e estado recibiendo muchos correos diciéndome provenir de Hotmail pero no, estos correos nos piden nombre de usuario y password, pero en realidad es mentira, nuestra cuenta sera robada, para saber más lea el adjunto
    Attachment: cuentashotmail.pif

    Subject: Huevo Cartoons Gratis :D
    Message: Encontré una página con una buena colección de huevo cartoons
    Attachment: www.huevosymashuevos.com

    Subject: Me gusta..
    Message: A mí me gusta, y a tí
    Attachment: xtreme.pif

    Subject: Lista de vulnerabilidades en windows
    Message: Esta es una lista de vulnerabilidades en windows para que sepas y no te vayan a hackear, cuídate, chau
    Attachment: vulnerabildades.pif

    Subject: Asf me veo.
    Message: Esta es mi foto cuando estaba en la playa :)
    Attachment: playa_cancun.pif

    Subject: Sofia vergara screen saver.
    Message: Nuevo Screen Saver de sofia vergara desnuda, que esperais para bajarlo!
    Attachment: soffavergara.scr

    Subject: Blaster Remover
    Message: his is the new blaster remover, run it as soon as you can
    Attachment: Anti-BlasterWorm.exe

    Subject: Matrix Reloaded
    Message: Matrix Reloaded new screen Saver, i hope you will like
    Attachment: MatrixReloaded.scr

    From: microsoft@microsoftupdate.com
    Subject: Nueva vulnerabilidad en Windows
    Message:
    El día de hoy se a descubierto una nueva vulnerabilidad para los sistemas windows recomendamos aplicar el siguiente parche de seguridad, ya que el no parchear esta vulnerabilidad puede permitir la ejecución de código en la máquina afectada y podría ser explotada por algún virus como es el caso del Blaster, Gracias
    Attachment: K54403.exe

  8. Sends an email notification to the worm's author. The email has the following characteristics:
    • SMTP server: smtp.prodigy.net.mx
    • MAIL FROM: ajh@prodigy.net.mx
    • FROM: Falckon@GEDZAC.net
    • To: infectados@virusmex.zzn.com
    • Subject: New Infected
    • The message body contains the infection date and time, as well as stolen information of the infected machine, such as the operating system information, registered organization, registered owner, country, host name, host IP address.
    • Contains the following text:

      Mapson.D Reporting to the GEDZAC LABs

  9. Creates a user, GEDZAC, with the password "gedzac," then adds this user to the administrators group.

  10. Executes Telnet.exe.


Recommendations

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.

Writeup By: Yana Liu

Discovered: August 30, 2003
Updated: February 13, 2007 12:06:34 PM
Also Known As: I-Worm.Mapson.d [KAV], W32/Mapson.gen@MM [McAfee]
Type: Worm
Systems Affected: Windows



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. Restart the computer in Safe mode or VGA mode.
  4. Run a full system scan and delete all the files detected as W32.Mapson.D.Worm.
  5. Delete the value that was added to the registry.
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:
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. Restarting the computer in Safe mode or VGA mode
  • For Windows 95, 98, Me, 2000, or XP users, restart the computer in Safe mode. For instructions, refer to the document, "How to start the computer in Safe Mode."
  • For Windows NT 4 users, restart the computer in VGA mode.


4. 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 W32.Mapson.D.Worm, click Delete.
  4. Delete the file, C:\lorraine.c.hta, if it exists.
  5. Delete the file, C:\-.txt, if it exists.

4. Deleting the value from the registry

CAUTION : Symantec strongly recommends that you back up the registry before making any changes to it. Incorrect changes to the registry can result in permanent data loss or corrupted files. Modify the specified keys only. Read the document, "How to make a backup of the Windows registry ," for instructions.
  1. Click Start, and then click Run. (The Run dialog box appears.)
  2. Type regedit

    Then click OK. (The Registry Editor opens.)

  3. Navigate to the key:

    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run

  4. In the right pane, delete the value:

    "NAV"="%System%\RuxDLL32.exe"

  5. Exit the Registry Editor.



Writeup By: Yana Liu