W32.HLLW.Maax.B@mm

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Discovered: May 14, 2003
Updated: February 13, 2007 12:01:19 PM
Type: Worm
Systems Affected: Windows


W32.HLLW.Maax.B@mm is a mass-mailing worm that uses a current MAPI program (for example, Microsoft Outlook ) to send itself to all the contacts in a current MAPI program's Address Book. When this worm is run, a message displays with the title, "Axam Spitmaxa Worm II." Refer to the Technical Details section for more information.

The worm also attempts to spread itself through KaZaA, KaZaA Lite, Morpheus, Grokster, BearShare, Edonkey2000, and Limewire file-sharing networks.

The email that the worm sends has the following characteristics:

Subject: The subject line is one of the following:
WHEN US GOVERMENT TO STOP THE INVADED IN IRAQ?!
News: US vs Iraq Issue
Strike on Iraq
Hi! ;)
Good Idea For ya!
DAA Holding have an Idea for Bussiness man
Great Job for Professional Programmer
Trade and Care about customer!
Don't missed Logon to DAABussiness.com
Are you a Bussiness man?
How to make a money in one day?
Care to trade world map?
How to prevent from Pirate CD!
Job for you!
Do you have an enough salaries for you job?
Don't waste your money!
HAVE A NICE DAY!
Why US invade on Iraq?
No More Blood!
HOW TO PREVENT YOUR EMAIL FROM VIRUSES?

Message:
Dear Mr/Mrs/Sir/Mdm,
Are you tired to get the customer. It is important to know how to make your bussiness more efficient.
To get a tips and more advise. You can download it from the attachment or just click here <link to executable file on web>
to download from our FTP site.
Regard,
Yamamoto Hashimura,
Software Engineer of DAA Holding

Attachment: Tca.exe

W32.HLLW.Maax.B@mm attempts to terminate the processes of the antivirus and security-related programs.

This threat is written in the Microsoft Visual Basic (VB) programming language and is compressed with UPX.

Antivirus Protection Dates

  • Initial Rapid Release version May 14, 2003
  • Latest Rapid Release version September 28, 2010 revision 054
  • Initial Daily Certified version May 14, 2003
  • Latest Daily Certified version September 28, 2010 revision 036
  • Initial Weekly Certified release date May 14, 2003

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

Writeup By: Yana Liu

Discovered: May 14, 2003
Updated: February 13, 2007 12:01:19 PM
Type: Worm
Systems Affected: Windows


When W32.HLLW.Maax.B@mm runs, it does the following:

  1. Displays the following message:



  2. Copies itself as the following:
    • %Windir%\command.exe
    • %Windir%\regedit.exe
    • %Windir%\setup_axm.exe
    • %System%\iosys.exe
    • %System%\msconfig.exe
    • %System%\taskmgr.exe

      NOTES:
    • %Windir% is a variable. The worm locates the Windows installation folder (by default, this is C:\Windows or C:\Winnt) and copies itself to that location.
    • %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).

  3. Locates the current user's Application Data folder and Startup folder by examining the registry. Then, the worm copies itself as Axam.exe to these two folders. The attributes of the copies are set to Read Only, Hidden, and System.

  4. Copies itself as the following, if the associated folder exist:
    • %ProgramFiles%\Kazaa\My Shared Folder\FlashMXPlayer.exe
    • %ProgramFiles%\KaZaA Lite\My Shared Folder\XiaoXiao.exe
    • %ProgramFiles%\BearShare\Shared\setup.exe
    • %ProgramFiles%\Edonkey2000\Incoming\RA2_Update.exe
    • %ProgramFiles%\limewire\Shared\FixRUNDLL bugs.exe
    • %ProgramFiles%\KMD\My Shared Folder\AXM_WORM.exe
    • %ProgramFiles%\Morpheus\My Shared Folder\Bugbear_Removal.exe
    • %ProgramFiles%\Grokster\My Grokster\SEXisFUN.exe

      NOTE: %ProgramFiles% is a variable that refers to the path of the program files folder. The worm locates this folder by examining the registry. By default, this is C:\Program Files.

  5. Copies itself to all the root folders of the disks as axam_screensaver.scr.

  6. Adds a value:

    "sysaxam32"="%Application Data%\Axam.exe"

    to the registry key:

    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run

  7. Modifies the default value of the registry key:

    HKEY_LOCAL_MACHINE\SOFTWARE\CLASSES\.exe

    to:

    Spitmaxa

  8. Creates a subkey, Spitmaxa, in the registry key:

    HKEY_LOCAL_MACHINE\SOFTWARE\CLASSES

  9. Modifies Win.ini file:

    [windows]
    load=%windir%\setup_axm.exe
    run=%system%\iosys.exe

  10. Modifies system.ini file:

    [boot]
    shell=Explorer.exe setup_axm.exe

  11. May overwrite the C:\autoexec.bat file so that it formats drives C and D when you restart Windows 95/98/Me.

  12. Delete all the files on floppy.

  13. Uses a current MAPI program to send itself to all the contacts in a current MAPI program's Address Book.
    The email has the following characteristics:

    Subject: The subject line is one of the following:
    WHEN US GOVERMENT TO STOP THE INVADED IN IRAQ?!
    News: US vs Iraq Issue
    Strike on Iraq
    Hi! ;)
    Good Idea For ya!
    DAA Holding have an Idea for Bussiness man
    Great Job for Professional Programmer
    Trade and Care about customer!
    Don't missed Logon to DAABussiness.com
    Are you a Bussiness man?
    How to make a money in one day?
    Care to trade world map?
    How to prevent from Pirate CD!
    Job for you!
    Do you have an enough salaries for you job?
    Don't waste your money!
    HAVE A NICE DAY!
    Why US invade on Iraq?
    No More Blood!
    HOW TO PREVENT YOUR EMAIL FROM VIRUSES?

    Message:
    Dear Mr/Mrs/Sir/Mdm,
    Are you tired to get the customer. It is important to know how to make your bussiness more efficient.
    To get a tips and more advise. You can download it from the attachment or just click here <link to executable file on web>
    to download from our FTP site.
    Regard,
    Yamamoto Hashimura,
    Software Engineer of DAA Holding

    Attachment: Tca.exe

  14. Terminates the following processes:

    Zonealarm.exe
    Wfindv32.exe
    Webscanx.exe
    Vsstat.exe
    Vshwin32.exe
    Vsecomr.exe
    Vscan40.exe
    Vettray.exe
    Vet95.exe
    VControl.exe
    Tds2-Nt.exe
    Tds2-98.exe
    Sweep95.exe
    Sphinx.exe
    Smc.exe
    Serv95.exe
    Scrscan.exe
    Scanpm.exe
    Scan95.exe
    Scan32.exe
    Safeweb.exe
    Rescue.exe
    Regedit.exe
    Regedit.com
    Rav7win.exe
    Rav7.exe
    Persfw.exe
    Pcfwallicon.exe
    Pccwin98.exe
    Pavw.exe
    Pavsched.exe
    Pavcl.exe
    Padmin.exe
    Outpost.exe
    Nvc95.exe
    Nupgrade.exe
    Normist.exe
    Nmain.exe
    Nisum.exe
    Navwnt.exe
    Navw32.exe
    Navnt.exe
    Navlu32.exe
    Navapw32.exe
    N32scanw.exe
    Mpftray.exe
    Moolive.exe
    Luall.exe
    Lookout.exe
    Lockdown2000.exe
    Jedi.exe
    Iomon98.exe
    Iface.exe
    Icsuppnt.exe
    Icsupp95.exe
    Icmon.exe
    Icloadnt.exe
    Icload95.exe
    Ibmavsp.exe
    Ibmasn.exe
    Iamserv.exe
    Iamapp.exe
    HH.exe
    Frw.exe
    Fprot.exe
    Fp-Win.exe
    Findviru.exe
    F-Stopw.exe
    F-Prot95.exe
    F-Prot.exe
    F-Agnt95.exe
    Espwatch.exe
    Esafe.exe
    Ecengine.exe
    Dvp95_0.exe
    Dvp95.exe
    Command.com
    Cmd.exe
    Cleaner3.exe
    Cleaner.exe
    Claw95cf.exe
    Claw95.exe
    Cfinet32.exe
    Cfinet.exe
    Cfiaudit.exe
    Cfiadmin.exe
    ccApp.exe
    Blackice.exe
    Blackd.exe
    Avwupd32.exe
    Avwin95.exe
    Avsched32.exe
    Avpupd.exe
    Avptc32.exe
    Avpm.exe
    Avpdos32.exe
    Avpcc.exe
    Avp32.exe
    Avp.exe
    Avnt.exe
    Avkserv.exe
    Avgctrl.exe
    Ave32.exe
    Avconsol.exe
    Autodown.exe
    Apvxdwin.exe
    Anti-Trojan.exe
    Ackwin32.exe
    _Avpm.exe
    _Avpcc.exe
    _Avp32.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: May 14, 2003
Updated: February 13, 2007 12:01:19 PM
Type: Worm
Systems Affected: Windows



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

CAUTION: If you are running Windows 95/98/Me, do not restart your computer until you have removed the worm.

NOTES:

  • If the worm has not yet run—that is, the worm file was copied to your computer but has not run—you should be able to follow the instructions in sections 1 and 2, which will detect and remove this file. (If the worm has run, in most cases you will not be able to perform these steps, because the modifications that the worm made will prevent you from doing so.)
  • If the worm has run, first follow the instructions in section 3 (and section 5 if you are running Windows 95/98/Me). After you complete those instructions, follow the steps in sections 1 and 2.
  1. Update the virus definitions.
  2. Run a full system scan and delete all the files detected as W32.HLLW.Maax.B@mm.
  3. Restore msconfig.exe, regedit.exe, and taskmgr.exe.
  4. Reverse the changes that the worm made to the registry.
  5. Modify the windows section in the Win.ini file.
  6. Modify the boot section in the system.ini file.
  7. Replace the Autoexec.bat file from a clean backup (Windows 95/98/Me).
For specific details on each of these procedures, read the following instructions.

1. Updating the virus definitions
Symantec Security Response fully tests all 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.

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 W32.HLLW.Maax.B@mm, click Delete.

3. Restoring msconfig.exe, regedit.exe, and taskmgr.exe
Because the worm overwrote these files, you should restore them from a backup copy or re-install them. All the files are not required for all the operating systems, and the location of the files varies. If you need help with this, contact your computer vendor or a qualified computer consultant.

4. Reversing the changes that the worm made to the registry
Because the worm modified the registry so that you cannot run the .exe files, first make a copy of the Registry Editor as a file with the .com extension, and then run the file. Follow these steps:
  1. Do one of the following, depending on which version of Windows you are running:
    • Windows 95/98 users:
      1. Click Start.
      2. Point to Programs.
      3. Click the MS-DOS Prompt. (A DOS window opens at the C:\Windows prompt.) Proceed to step B of this section.
    • Windows Me users:
      1. Click Start.
      2. Point to Programs.
      3. Point to Accessories.
      4. Click the MS-DOS Prompt. (A DOS window opens at the C:\Windows prompt.) Proceed to step B of this section.
    • Windows NT/2000 users:
      1. Click Start, and then click Run.
      2. Type command, and then press Enter. (A DOS window opens.)
      3. Type cd \winnt, and then press Enter.
      4. Go to step B of this section.
    • Windows XP users:
      1. Click Start, and then click Run.
      2. Type command, and then press Enter. (A DOS window opens.)
      3. Type the following lines (pressing Enter after typing each one):

        cd\
        cd \windows
      4. Proceed to step B of this section.

  2. Type copy regedit.exe regedit.com, and then press Enter.

  3. Type start regedit.com, and then press Enter. (The Registry Editor opens in front of the DOS window.)

    After you finish editing the registry, exit the Registry Editor, and then exit the DOS window as well.

  4. Before you continue, 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. For instructions, read the document "How to make a backup of the Windows registry."

  5. Navigate to and select the key:

    HKEY_CLASSES_ROOT\.exe

  6. In the right pane, double-click:

    (Default)

  7. Change the Value Data to:

    exefile

  8. Navigate to and delete the key:

    HKEY_CLASSES_ROOT\Spitmaxa

  9. Navigate to and select the key:

    HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run

  10. In the right pane, delete the value:

    sysaxam32 %Application Data%\Axam.exe

  11. Exit the Registry Editor.


5. Modifying the windows section in the Win.ini file as the following:

    [windows]
    load=
    run=
6. Modifying the boot section in the system.ini file as the following:

    [boot]
    shell=Explorer.exe
7. Replacing the Autoexec.bat file

If you run Windows 95/98/Me, locate and delete the C:\Autoexec.bat file, and then replace it with a clean backup copy.

CAUTION: If you do not have a backup copy of the file, you still need to delete the file. Your computer can run without this file, but if you restart the computer without deleting or replacing Autoexec.bat, drives C and D will be formatted when you restart the computer.

Writeup By: Yana Liu