W32.Mydoom.AN@mm

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Discovered: January 28, 2005
Updated: February 13, 2007 12:32:37 PM
Also Known As: Win32.Mydoom.AL [Computer Asso, Email-Worm.Win32.Mydoom.ah [Ka, W32/Mydoom.av@MM [McAfee], W32/MyDoom-AN [Sophos], WORM_MYDOOM.AN [Trend Micro]
Type: Worm
Systems Affected: Windows



W32.Mydoom.AN@mm is a mass-mailing worm that downloads a copy of Backdoor.Nemog.D . The email has a variable subject and attachment name. The attachment will have a .cpl, .exe, .pif, .scr, or .zip file extension.

The worm can also spread using ICQ instant messenger. The worm attempts to lower security settings by terminating and disabling various antivirus and security-related programs.



Removing entries from the Hosts file
If this threat has modified the Windows Hosts file, there are two ways to remove these entries:

  • Install and run the current version of LiveUpdate. This will remove only the entries that refer to Symantec domains.
  • Manually edit the Hosts file and remove all the entries that the worm added.

To run the current version of LiveUpdate
  1. Click download LiveUpdate.

    Note:
    If you are not reading this Web page on the computer that is getting the error notice, the address for downloading the file is:

    ftp://ftp.symantec.com/public/english_us_canada/liveupdate/lusetup.exe

    If necessary, you can type this address into the address bar of the problem computer. Changes to the Hosts file will not stop you from getting to this site.

  2. Save the file to the Windows desktop.
  3. Double-click the lusetup.exe icon on the desktop to install LiveUpdate.
  4. Run LiveUpdate.
  5. Did you see the message "LU1860: LiveUpdate has detected a potential security compromise on your computer"?
    • If you did, let LiveUpdate "Remove these entries from the hosts files" (Recommended).
      This should allow LiveUpdate to run.
    • If you did not, that was not the cause of the problem. Return to the Removal section.


To manually edit the Hosts file and remove all the entries that the worm added

Note: The location of the Hosts file may vary and some computers may not have this file. For example, if the file exists in Windows 98, it will usually be in C:\Windows; and it is located in the C:\WINNT\system32\drivers\etc folder in Windows 2000. There may also be multiple copies of this file in different locations.


Follow the instructions for your operating system:
  • Windows 95/98/Me/NT/2000
    1. Click Start, point to Find or Search, and then click Files or Folders.
    2. Make sure that "Look in" is set to (C:) and that "Include subfolders" is checked.
    3. In the "Named" or "Search for..." box, type:

      hosts

    4. Click Find Now or Search Now.
    5. For each Hosts file that you find, right-click the file, and then click Open With.
    6. Deselect the "Always use this program to open this program" check box.
    7. Scroll through the list of programs and double-click Notepad.
    8. When the file opens, delete all the entries in step number nine of the "Technical Details" section.
    9. Close Notepad and save your changes when prompted.

  • Windows XP
    1. Click Start > Search.
    2. Click All files and folders.
    3. In the "All or part of the file name" box, type:

      hosts

    4. Verify that "Look in" is set to "Local Hard Drives" or to (C:).
    5. Click More advanced options.
    6. Check Search system folders.
    7. Check Search subfolders.
    8. Click Search.
    9. Click Find Now or Search Now.
    10. For each Hosts file that you find, right-click the file, and then click Open With.
    11. Deselect the Always use this program to open this program check box.
    12. Scroll through the list of programs and double-click Notepad.
    13. When the file opens, delete all the entries in step number nine of the "Technical Details" section.
    14. Close Notepad and save your changes when prompted.


Antivirus Protection Dates

  • Initial Rapid Release version January 28, 2005
  • Latest Rapid Release version January 28, 2005
  • Initial Daily Certified version January 28, 2005
  • Latest Daily Certified version January 28, 2005
  • Initial Weekly Certified release date February 02, 2005

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

Writeup By: Takayoshi Nakayama

Discovered: January 28, 2005
Updated: February 13, 2007 12:32:37 PM
Also Known As: Win32.Mydoom.AL [Computer Asso, Email-Worm.Win32.Mydoom.ah [Ka, W32/Mydoom.av@MM [McAfee], W32/MyDoom-AN [Sophos], WORM_MYDOOM.AN [Trend Micro]
Type: Worm
Systems Affected: Windows


Once W32.Mydoom.AN@mm is executed, it performs the following actions:

  1. Copies of itself as %Windir%\services.exe.

    Note: %Windir% is a variable that refers to the Windows installation folder. By default, this is C:\Windows or C:\Winnt.

  2. Creates a service with the following characteristics:

    Service name: NetBios Ext32
    Display name: NetBios Ext32
    Path to executable: %Windir%\services.exe serv

  3. Creates the following registry entry:

    HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\NetBios Ext32

    so that it runs when Windows starts.

  4. Adds the values:

    "Mshdfg" = "[hex value]"
    "Terjt"  = "[hex value]"

    to the registry subkey:

    HKEY_LOCAL_MACHINE\Software\Microsoft\Internet Explorer

  5. Adds the value:

    "DisableRegistryTools" = "0"

    to the registry subkeys:

    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\policies
    HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\policies

    to block access to the registry editor.

  6. Downloads a copy of Backdoor.Nemog.D from one of the following servers, and then executes it:

    • benjafieldsracingclub.co.uk
    • bored.kary.ca
    • bossco.co.uk
    • dreamon.cyberdogcastle.com
    • forums.maehara.co.uk
    • www.aartanridge.org.uk
    • www.alfa
    • www.aoprojecteden.org
    • www.creativemods.com
    • www.dilvie.com
    • www.eastcoastchoons.co.uk
    • www.euhg.org
    • www.fartdevilstudio.org
    • www.foxalpha.com
    • www.frenchconnexion.org
    • www.petrucciforum.com
    • www.ribaforada.net
    • www.stahlhammer.org
    • www.sundayriders.co.uk
    • www.supermantv.net
    • www.yamamizuryu.org
    • www.foxalpha.com
    • www.hidden
    • www.hooping.org
    • www.hypnobirthing.co.uk
    • www.idiotica.co.uk
    • www.imogenheap.co.uk
    • www.knutsfordcricket.co.uk
    • www.lancer.com.ru
    • www.newgenerationcomics.net
    • www.overcoming

  7. Gathers email addresses from the Windows Address Book and from the Local Settings\Temporary Internet Files subfolder. The worm also gathers email addresses from files with the following extensions:

    • .asp
    • .cgi
    • .dbx
    • .dht
    • .eml
    • .htm
    • .jsp
    • .mbx
    • .mht
    • .msg
    • .php
    • .sht
    • .stm
    • .tbb
    • .txt
    • .uin
    • .wab


      Gathers email addresses by posting a GET request to the following search engines:

    • www.google.com
    • www.accoona.com


      The worm will not send itself to email addresses that contain any of the following strings:

    • - -._!
    • - -._!@
    • .gov
    • .mil
    • @foo.
    • @iana
    • abuse
    • accoun
    • acketst
    • admin
    • antivi
    • anyone
    • arin.
    • avp
    • avp.
    • berkeley
    • borlan
    • bsd
    • certific
    • contact
    • example
    • feste
    • fido
    • fsf.
    • gnu
    • gold-certs
    • google
    • gov.
    • help
    • iana
    • ibm.com
    • icq.com
    • icrosof
    • icrosoft
    • ietf
    • info
    • inpris
    • isc.o
    • isi.e
    • kasp
    • kernel
    • linux
    • listserv
    • math
    • messagelabs
    • mit.e
    • mozilla
    • mydomai
    • news
    • nobody
    • nodomai
    • noone
    • noreply
    • nothing
    • ntivi
    • panda
    • pgp
    • postmaster
    • privacy
    • rating
    • rfc-ed
    • ripe.
    • root
    • ruslis
    • samples
    • secur
    • sendmail
    • service
    • site
    • somebody
    • someone
    • sopho
    • spam
    • submit
    • support
    • syman
    • tanford.e
    • unix
    • upport
    • usenet
    • utgers.ed
    • webmaster
    • www

  8. Sends itself to the email addresses found on the compromised computer using its own SMTP engine. The email has the following characteristics:

    From:
    Spoofed. The worm composes a fake From address using the format [first name][last name]@[domain]

    Where [first name] is one of the following:

    • Aaron
    • Abel
    • Abraham
    • Adam
    • Adrian
    • Alan
    • Albert
    • Alberto
    • Alejandro
    • Alex
    • Alexander
    • Alfonso
    • Alfred
    • Alfredo
    • Allan
    • Allen
    • Alonzo
    • Alton
    • Alvin
    • Amos
    • Andre
    • Andres
    • Andrew
    • Andy
    • Angel
    • Angelo
    • Anthony
    • Antonio
    • Archie
    • Armando
    • Arnold
    • Arthur
    • Arturo
    • Aubrey
    • Austin
    • Barry
    • Ben
    • Benjamin
    • Bennie
    • Benny
    • Bernard
    • Bert
    • Bill
    • Billy
    • Blake
    • Bob
    • Bobby
    • Boyd
    • Brad
    • Bradford
    • Bradley
    • Brandon
    • Brendan
    • Brent
    • Brett
    • Brian
    • Bruce
    • Bryan
    • Bryant
    • Byron
    • Caleb
    • Calvin
    • Cameron
    • Carl
    • Carlos
    • Carlton
    • Carroll
    • Cary
    • Casey
    • Cecil
    • Cedric
    • Cesar
    • Chad
    • Charles
    • Charlie
    • Chester
    • Chris
    • Christian
    • Christopher
    • Clarence
    • Clark
    • Claude
    • Clay
    • Clayton
    • Clifford
    • Clifton
    • Clint
    • Clinton
    • Clyde
    • Cody
    • Colin
    • Conrad
    • Corey
    • Cornelius
    • Cory
    • Courtney
    • Craig
    • Curtis
    • Dale
    • Dallas
    • Damon
    • Dan
    • Dana
    • Daniel
    • Danny
    • Darin
    • Darnell
    • Darrel
    • Darrell
    • Darren
    • Darrin
    • Darryl
    • Daryl
    • Dave
    • David
    • Dean
    • Delbert
    • Dennis
    • Derek
    • Derrick
    • Devin
    • Dewey
    • Dexter
    • Domingo
    • Dominic
    • Dominick
    • Don
    • Donald
    • Donnie
    • Doug
    • Douglas
    • Doyle
    • Drew
    • Duane
    • Dustin
    • Dwayne
    • Dwight
    • Earl
    • Earnest
    • Eddie
    • Edgar
    • Edmond
    • Edmund
    • Eduardo
    • Edward
    • Edwin
    • Elbert
    • Elias
    • Elijah
    • Ellis
    • Elmer
    • Emanuel
    • Emilio
    • Emmett
    • Enrique
    • Eric
    • Erick
    • Erik
    • Ernest
    • Ernesto
    • Ervin
    • Eugene
    • Evan
    • Everett
    • Felipe
    • Felix
    • Fernando
    • Floyd
    • Forrest
    • Francis
    • Francisco
    • Frank
    • Frankie
    • Franklin
    • Fred
    • Freddie
    • Frederick
    • Fredrick
    • Gabriel
    • Garrett
    • Garry
    • Gary
    • Gene
    • Geoffrey
    • George
    • Gerald
    • Gerard
    • Gerardo
    • Gilbert
    • Gilberto
    • Glen
    • Glenn
    • Gordon
    • Grady
    • Grant
    • Greg
    • Gregg
    • Gregory
    • Guadalupe
    • Guillermo
    • Gustavo
    • Guy
    • Harold
    • Harry
    • Harvey
    • Hector
    • Henry
    • Herbert
    • Herman
    • Homer
    • Horace
    • Howard
    • Hubert
    • Hugh
    • Hugo
    • Ian
    • Ignacio
    • Ira
    • Irvin
    • Irving
    • Isaac
    • Ismael
    • Israel
    • Ivan
    • Jack
    • Jackie
    • Jacob
    • Jaime
    • Jake
    • James
    • Jamie
    • Jan
    • Jared
    • Jason
    • Javier
    • Jay
    • Jean
    • Jeff
    • Jeffery
    • Jeffrey
    • Jerald
    • Jeremiah
    • Jeremy
    • Jermaine
    • Jerome
    • Jerry
    • Jesse
    • Jessie
    • Jesus
    • Jim
    • Jimmie
    • Jimmy
    • Jody
    • Joe
    • Joel
    • Joey
    • John
    • Johnathan
    • Johnnie
    • Johnny
    • Jon
    • Jonathan
    • Jonathon
    • Jordan
    • Jorge
    • Jose
    • Joseph
    • Josh
    • Joshua
    • Juan
    • Julian
    • Julio
    • Julius
    • Justin
    • Karl
    • Keith
    • Kelly
    • Kelvin
    • Ken
    • Kenneth
    • Kenny
    • Kent
    • Kerry
    • Kevin
    • Kim
    • Kirk
    • Kristopher
    • Kurt
    • Kyle
    • Lamar
    • Lance
    • Larry
    • Laurence
    • Lawrence
    • Lee
    • Leland
    • Leo
    • Leon
    • Leonard
    • Leroy
    • Leslie
    • Lester
    • Levi
    • Lewis
    • Lionel
    • Lloyd
    • Lonnie
    • Loren
    • Lorenzo
    • Louis
    • Lowell
    • Lucas
    • Luis
    • Luke
    • Luther
    • Lyle
    • Lynn
    • Mack
    • Malcolm
    • Manuel
    • Marc
    • Marco
    • Marcos
    • Marcus
    • Mario
    • Marion
    • Mark
    • Marlon
    • Marshall
    • Martin
    • Marty
    • Marvin
    • Mathew
    • Matt
    • Matthew
    • Maurice
    • Max
    • Melvin
    • Merle
    • Michael
    • Micheal
    • Miguel
    • Mike
    • Milton
    • Mitchell
    • Morris
    • Moses
    • Myron
    • Nathan
    • Nathaniel
    • Neal
    • Neil
    • Nelson
    • Nicholas
    • Nick
    • Nicolas
    • Noah
    • Noel
    • Norman
    • Oliver
    • Omar
    • Orlando
    • Orville
    • Oscar
    • Otis
    • Owen
    • Pablo
    • Pat
    • Patrick
    • Paul
    • Pedro
    • Percy
    • Perry
    • Pete
    • Peter
    • Phil
    • Philip
    • Phillip
    • Preston
    • Rafael
    • Ralph
    • Ramiro
    • Ramon
    • Randal
    • Randall
    • Randolph
    • Randy
    • Raul
    • Ray
    • Raymond
    • Reginald
    • Rene
    • Rex
    • Ricardo
    • Richard
    • Rick
    • Rickey
    • Ricky
    • Robert
    • Roberto
    • Robin
    • Roderick
    • Rodney
    • Rodolfo
    • Rogelio
    • Roger
    • Roland
    • Rolando
    • Roman
    • Ron
    • Ronald
    • Ronnie
    • Roosevelt
    • Ross
    • Roy
    • Ruben
    • Rudolph
    • Rudy
    • Rufus
    • Russell
    • Ryan
    • Salvador
    • Salvatore
    • Sam
    • Sammy
    • Samuel
    • Santiago
    • Santos
    • Saul
    • Scott
    • Sean
    • Sergio
    • Seth
    • Shane
    • Shannon
    • Shaun
    • Shawn
    • Sheldon
    • Sherman
    • Sidney
    • Simon
    • Spencer
    • Stanley
    • Stephen
    • Steve
    • Steven
    • Stewart
    • Stuart
    • Sylvester
    • Taylor
    • Ted
    • Terence
    • Terrance
    • Terrell
    • Terrence
    • Terry
    • Theodore
    • Thomas
    • Tim
    • Timmy
    • Timothy
    • Toby
    • Todd
    • Tom
    • Tomas
    • Tommie
    • Tommy
    • Tony
    • Tracy
    • Travis
    • Trevor
    • Troy
    • Tyler
    • Tyrone
    • Van
    • Vernon
    • Victor
    • Vincent
    • Virgil
    • Wade
    • Wallace
    • Walter
    • Warren
    • Wayne
    • Wendell
    • Wesley
    • Wilbert
    • Wilbur
    • Wilfred
    • Willard
    • William
    • Willie
    • Willis
    • Wilson
    • Winston
    • Woodrow
    • Zachary


      [last name] is one of the following:

    • Adams
    • Adkins
    • Aguilar
    • Alexander
    • Allen
    • Alvarado
    • Alvarez
    • Anderson
    • Andrews
    • Armstrong
    • Arnold
    • Austin
    • Bailey
    • Baker
    • Baldwin
    • Ball
    • Ballard
    • Banks
    • Barber
    • Barker
    • Barnes
    • Barnett
    • Barrett
    • Bates
    • Beck
    • Becker
    • Bell
    • Bennett
    • Benson
    • Berry
    • Bishop
    • Black
    • Blair
    • Blake
    • Bowen
    • Bowman
    • Boyd
    • Bradley
    • Brewer
    • Briggs
    • Brooks
    • Brown
    • Bryant
    • Buchanan
    • Burgess
    • Burke
    • Burns
    • Burton
    • Bush
    • Butler
    • Byrd
    • Caldwell
    • Campbell
    • Cannon
    • Carlson
    • Carpenter
    • Carr
    • Carroll
    • Carter
    • Castillo
    • Castro
    • Chambers
    • Chandler
    • Chapman
    • Chavez
    • Christensen
    • Clark
    • Cobb
    • Cohen
    • Cole
    • Coleman
    • Collins
    • Colon
    • Conner
    • Cook
    • Cooper
    • Copeland
    • Cox
    • Craig
    • Crawford
    • Cross
    • Cruz
    • Cummings
    • Cunningham
    • Curry
    • Curtis
    • Daniel
    • Daniels
    • Davidson
    • Davis
    • Dawson
    • Day
    • Dean
    • Delgado
    • Dennis
    • Diaz
    • Dixon
    • Douglas
    • Doyle
    • Duncan
    • Dunn
    • Edwards
    • Elliott
    • Ellis
    • Erickson
    • Estrada
    • Evans
    • Farmer
    • Ferguson
    • Fernandez
    • Fields
    • Fisher
    • Fitzgerald
    • Fleming
    • Fletcher
    • Flores
    • Flowers
    • Floyd
    • Ford
    • Foster
    • Fowler
    • Fox
    • Francis
    • Franklin
    • Frazier
    • Freeman
    • French
    • Fuller
    • Garcia
    • Gardner
    • Garner
    • Garrett
    • Garza
    • George
    • Gibbs
    • Gibson
    • Gilbert
    • Gill
    • Glover
    • Gomez
    • Gonzales
    • Gonzalez
    • Goodman
    • Goodwin
    • Gordon
    • Graham
    • Grant
    • Graves
    • Gray
    • Green
    • Greene
    • Greer
    • Gregory
    • Griffin
    • Griffith
    • Gross
    • Guerrero
    • Gutierrez
    • Guzman
    • Hale
    • Hall
    • Hamilton
    • Hammond
    • Hampton
    • Hansen
    • Hanson
    • Hardy
    • Harmon
    • Harper
    • Harris
    • Harrison
    • Hart
    • Harvey
    • Hawkins
    • Hayes
    • Haynes
    • Henderson
    • Henry
    • Hernandez
    • Herrera
    • Hicks
    • Higgins
    • Hill
    • Hines
    • Hodges
    • Hoffman
    • Holland
    • Holmes
    • Holt
    • Hopkins
    • Horton
    • Houston
    • Howard
    • Howell
    • Hubbard
    • Hudson
    • Hughes
    • Hunt
    • Hunter
    • Ingram
    • Jackson
    • Jacobs
    • James
    • Jenkins
    • Jennings
    • Jensen
    • Jimenez
    • Johnson
    • Johnston
    • Jones
    • Jordan
    • Joseph
    • Keller
    • Kelley
    • Kelly
    • Kennedy
    • Kim
    • King
    • Klein
    • Knight
    • Lambert
    • Lane
    • Larson
    • Lawrence
    • Lawson
    • Lee
    • Leonard
    • Lewis
    • Lindsey
    • Little
    • Long
    • Lopez
    • Love
    • Lowe
    • Lucas
    • Lynch
    • Lyons
    • Mack
    • Maldonado
    • Malone
    • Mann
    • Manning
    • Marshall
    • Martin
    • Martinez
    • Mason
    • Matthews
    • Maxwell
    • May
    • Mcbride
    • Mccarthy
    • Mccoy
    • Mcdaniel
    • Mcdonald
    • Mcgee
    • Mckinney
    • Mclaughlin
    • Medina
    • Mendez
    • Mendoza
    • Meyer
    • Miles
    • Miller
    • Mills
    • Mitchell
    • Montgomery
    • Moody
    • Moore
    • Morales
    • Moran
    • Moreno
    • Morgan
    • Morris
    • Morrison
    • Moss
    • Mullins
    • Munoz
    • Murphy
    • Murray
    • Myers
    • Neal
    • Nelson
    • Newman
    • Newton
    • Nguyen
    • Nichols
    • Norman
    • Norris
    • Nunez
    • Obrien
    • Oliver
    • Olson
    • Ortega
    • Ortiz
    • Osborne
    • Owens
    • Padilla
    • Page
    • Palmer
    • Parker
    • Parks
    • Parsons
    • Patterson
    • Patton
    • Paul
    • Payne
    • Pearson
    • Pena
    • Perez
    • Perkins
    • Perry
    • Peters
    • Peterson
    • Phillips
    • Pierce
    • Pope
    • Porter
    • Potter
    • Powell
    • Powers
    • Pratt
    • Price
    • Quinn
    • Ramirez
    • Ramos
    • Ramsey
    • Ray
    • Reed
    • Reese
    • Reeves
    • Reid
    • Reyes
    • Reynolds
    • Rhodes
    • Rice
    • Richards
    • Richardson
    • Riley
    • Rios
    • Rivera
    • Robbins
    • Roberts
    • Robertson
    • Robinson
    • Rodgers
    • Rodriguez
    • Rodriquez
    • Rogers
    • Romero
    • Rose
    • Ross
    • Rowe
    • Roy
    • Ruiz
    • Russell
    • Ryan
    • Salazar
    • Sanchez
    • Sanders
    • Sandoval
    • Santiago
    • Santos
    • Saunders
    • Schmidt
    • Schneider
    • Schultz
    • Schwartz
    • Scott
    • Sharp
    • Shaw
    • Shelton
    • Sherman
    • Silva
    • Simmons
    • Simon
    • Simpson
    • Sims
    • Smith
    • Snyder
    • Soto
    • Spencer
    • Stanley
    • Steele
    • Stephens
    • Stevens
    • Stevenson
    • Stewart
    • Stokes
    • Stone
    • Strickland
    • Sullivan
    • Sutton
    • Swanson
    • Tate
    • Taylor
    • Terry
    • Thomas
    • Thompson
    • Thornton
    • Todd
    • Torres
    • Townsend
    • Tucker
    • Turner
    • Tyler
    • Valdez
    • Vargas
    • Vasquez
    • Vaughn
    • Vega
    • Wade
    • Wagner
    • Walker
    • Wallace
    • Walsh
    • Walters
    • Walton
    • Ward
    • Warner
    • Warren
    • Washington
    • Waters
    • Watkins
    • Watson
    • Watts
    • Weaver
    • Webb
    • Weber
    • Webster
    • Welch
    • Wells
    • West
    • Wheeler
    • White
    • Williams
    • Williamson
    • Willis
    • Wilson
    • Wise
    • Wolfe
    • Wood
    • Woods
    • Wright
    • Yates
    • Young
    • Zimmerman

      and [domain name] is one of the following:

    • 1access.net
    • a1isp.net
    • accessus.net
    • address.com
    • ameralinx.net
    • aol.com
    • apci.net
    • arczip.com
    • aristotle.net
    • att.net
    • cableone.net
    • cais.com
    • canada.com
    • cayuse.net
    • ccp.com
    • ccpc.net
    • chello.com
    • compuserve.com
    • core.com
    • cox.net
    • cybernex.net
    • dailymail.co.uk
    • dialupnet.com
    • earthlink.net
    • eclipse.net
    • eisa.com
    • ev1.net
    • excite.com
    • fast.net
    • fcc.net
    • flex.com
    • gbronline.com
    • globalbiz.net
    • globetrotter.net
    • gmx.net
    • highstream.net
    • hiwaay.net
    • hotmail.com
    • ieway.com
    • inext.fr
    • infoave.net
    • iquest.net
    • isp.com
    • ispwest.com
    • istep.com
    • juno.com
    • loa.com
    • macconnect.com
    • madriver.com
    • mail.com
    • msn.com
    • nccw.net
    • netcenter.com
    • netrox.net
    • netzero.net
    • pacific.net.sg
    • palm.net
    • pathlink.com
    • peoplepc.com
    • pics.com
    • rcn.com
    • ricochet.com
    • surfree.com
    • t/-online.com
    • t/-online.de
    • tiscali.com
    • toad.net
    • ultimanet.com
    • verizon.net
    • wanadoo.com
    • worldcom.com
    • worldshare.net
    • wwc.com
    • yahoo.co.uk
    • yahoo.com
    • ziplink.net


      Subject:
      One of the following:

    • Remember me?
    • Hi again
    • Me again
    • Me and you :)
    • Important, see attchmnt
    • My secret
    • Secret message
    • For your eyes only!
    • Look who's naked =)
    • Is it your girl?
    • My girl, for your eyes only
    • Office jokes /-))
    • Whoah! Very/-very big thing! Take a look!
    • Your friend lying to you..
    • Find yourself on picture :/-D
    • Party photos
    • You're next :) take a look
    • Sex in office, funny :]
    • Birthday Party Invitation!
    • [name from email address] !!!
    • [name from email address] and You!!!
    • Christmas ePostCard
    • Christmas ePostCard from [name from email address]
    • Merry/-Christmas!
    • Merry/-Christmas from [name from email address]
    • Christmas card
    • Christmas Greeting Card Waiting For You
    • An e/-postcard is waiting for you


      Message body:
      May be blank or one of the following:

    • Remember me?
    • Hi, [name from email address] has sent you an christmas postcard.
    • Merry X/-Mas!
    • Happy New Year!
    • Postcard for you
    • New Year Postcard from your friend
    • New Year Postcard from [name from email address]
    • Happy holidays! ;)
    • You're only moments away from viewing your Doozy CARDtoon.
      Simply click on the "Get Macromedia Flash Player"
      graphic to the left.It's a cinch to install!Once you've
      finished, click HERE to view your CARDToon.
      If you need any help, we're just an email away.
      Sincerely,
      The Doozy Team


      Attachment:
      One of the following:

    • [name from email address]'s girlfriend.jpg<many space>.pif
    • [name from email address]'s x/-mas joke.jpg
    • [name from email address].jpg<many space>.cpl
    • [name from email address].jpg<many space>.pif
    • [name from email address].zip
    • [name from email address]_dancing.jpg<many space>.pif
    • [name from email address]_joke.jpg<many space>.pif
    • [name from email address]_nude.pif
    • [name from email address]_with_flowers.jpg<many space>.pif
    • christmasscreenfrom.scr
    • document.jpg<many space>.pif
    • ePostCard[randam name].jpg<many space>cpl
    • flash x/-mas game.exe
    • flashepostcard.exe
    • fotos.zip
    • images.zip
    • merry/-christmas.scr
    • nude_[name from email address].jpg<many space>.pif
    • photo[name from email address].jpg<many space>.pif
    • photos.zip
    • shit.zip
    • shitpix.zip
    • x/-mas.jpg<many space>.pif

  9. Lowers security settings by blocking access to several security-related Web sites. The worm achieves this by appending the following lines to the hosts file:

    127.0.0.1 www.avp.com
    127.0.0.1 www.viruslist.com
    127.0.0.1 viruslist.com
    127.0.0.1 www.symantec.com
    127.0.0.1 networkassociates.com
    127.0.0.1 secure.nai.com
    127.0.0.1 downloads1.kaspersky-labs.com
    127.0.0.1 downloads2.kaspersky-labs.com
    127.0.0.1 downloads3.kaspersky-labs.com
    127.0.0.1 downloads4.kaspersky-labs.com
    127.0.0.1 downloads-us1.kaspersky-labs.com
    127.0.0.1 downloads-eu1.kaspersky-labs.com
    127.0.0.1 kaspersky-labs.com
    127.0.0.1 www.networkassociates.com
    127.0.0.1 us.mcafee.com
    127.0.0.1 f-secure.com
    127.0.0.1 avp.com
    127.0.0.1 www.sophos.com
    127.0.0.1 sophos.com
    127.0.0.1 www.ca.com
    127.0.0.1 ca.com
    127.0.0.1 securityresponse.symantec.com
    127.0.0.1 symantec.com
    127.0.0.1 mast.mcafee.com
    127.0.0.1 my-etrust.com
    127.0.0.1 www.kaspersky.com
    127.0.0.1 www.f-secure.com
    127.0.0.1 dispatch.mcafee.com
    127.0.0.1 update.symantec.com
    127.0.0.1 nai.com
    127.0.0.1 www.nai.com
    127.0.0.1 liveupdate.symantec.com
    127.0.0.1 customer.symantec.com
    127.0.0.1 rads.mcafee.com
    127.0.0.1 trendmicro.com
    127.0.0.1 liveupdate.symantecliveupdate.com
    127.0.0.1 www.mcafee.com
    127.0.0.1 mcafee.com
    127.0.0.1 viruslist.com
    127.0.0.1 www.my-etrust.com
    127.0.0.1 download.mcafee.com
    127.0.0.1 updates.symantec.com
    127.0.0.1 kaspersky.com
    127.0.0.1 www.trendmicro.com

  10. Lowers security settings by ending numerous processes associated with antivirus software and other worms. The process names include the following:

    • _AVP32.EXE
    • _AVPCC.EXE
    • _AVPM.EXE
    • ACKWIN32.EXE
    • ADAWARE.EXE
    • ADVXDWIN.EXE
    • AGENTSVR.EXE
    • AGENTW.EXE
    • ALERTSVC.EXE
    • ALEVIR.EXE
    • ALOGSERV.EXE
    • AMON9X.EXE
    • ANTI-TROJAN.EXE
    • ANTIVIRUS.EXE
    • ANTS.EXE
    • APIMONITOR.EXE
    • APLICA32.EXE
    • APVXDWIN.EXE
    • ARR.EXE
    • ATCON.EXE
    • ATGUARD.EXE
    • ATRO55EN.EXE
    • ATUPDATER.EXE
    • ATWATCH.EXE
    • AU.EXE
    • AUPDATE.EXE
    • AUTODOWN.EXE
    • AUTO-PROTECT.NAV80TRY.EXE
    • AUTOTRACE.EXE
    • AUTOUPDATE.EXE
    • AVCONSOL.EXE
    • AVE32.EXE
    • AVGCC32.EXE
    • AVGCTRL.EXE
    • AVGNT.EXE
    • AVGSERV.EXE
    • AVGSERV9.EXE
    • AVGUARD.EXE
    • AVGW.EXE
    • AVKPOP.EXE
    • AVKSERV.EXE
    • AVKSERVICE.EXE
    • AVKWCTl9.EXE
    • AVLTMAIN.EXE
    • AVNT.EXE
    • AVP.EXE
    • AVP32.EXE
    • AVPCC.EXE
    • AVPDOS32.EXE
    • AVPM.EXE
    • AVPTC32.EXE
    • AVPUPD.EXE
    • AVSCHED32.EXE
    • AVSYNMGR.EXE
    • AVWIN95.EXE
    • AVWINNT.EXE
    • AVWUPD.EXE
    • AVWUPD32.EXE
    • AVWUPSRV.EXE
    • AVXMONITOR9X.EXE
    • AVXMONITORNT.EXE
    • AVXQUAR.EXE
    • b055262c.dll
    • backdoor.rbot.gen.exe
    • backdoor.rbot.gen_(17).exe
    • BACKWEB.EXE
    • BARGAINS.EXE
    • BD_PROFESSIONAL.EXE
    • BEAGLE.EXE
    • BELT.EXE
    • BIDEF.EXE
    • BIDSERVER.EXE
    • BIPCP.EXE
    • BIPCPEVALSETUP.EXE
    • BISP.EXE
    • BLACKD.EXE
    • BLACKICE.EXE
    • BLSS.EXE
    • BOOTCONF.EXE
    • BOOTWARN.EXE
    • BORG2.EXE
    • BPC.EXE
    • BRASIL.EXE
    • BS120.EXE
    • BUNDLE.EXE
    • BVT.EXE
    • CCAPP.EXE
    • CCEVTMGR.EXE
    • CCPXYSVC.EXE
    • CDP.EXE
    • CFD.EXE
    • CFGWIZ.EXE
    • CFIADMIN.EXE
    • CFIAUDIT.EXE
    • CFINET.EXE
    • CFINET32.EXE
    • Claw95.EXE
    • CLAW95CF.EXE
    • CLEAN.EXE
    • CLEANER.EXE
    • CLEANER3.EXE
    • CLEANPC.EXE
    • CLICK.EXE
    • CMD32.EXE
    • CMESYS.EXE
    • CMGRDIAN.EXE
    • CMON016.EXE
    • CONNECTIONMONITOR.EXE
    • CPD.EXE
    • CPF9X206.EXE
    • CPFNT206.EXE
    • CTRL.EXE
    • CV.EXE
    • CWNB181.EXE
    • CWNTDWMO.EXE
    • d3dupdate.exe
    • dailin.exe
    • DATEMANAGER.EXE
    • DCOMX.EXE
    • DEFALERT.EXE
    • DEFSCANGUI.EXE
    • DEFWATCH.EXE
    • DEPUTY.EXE
    • DLLCACHE.EXE
    • DLLREG.EXE
    • DOORS.EXE
    • DPF.EXE
    • DPFSETUP.EXE
    • DPPS2.EXE
    • DRWATSON.EXE
    • DRWEB32.EXE
    • DRWEBUPW.EXE
    • DSSAGENT.EXE
    • DVP95.EXE
    • DVP95_0.EXE
    • ECENGINE.EXE
    • EFPEADM.EXE
    • EMSW.EXE
    • ENT.EXE
    • ESAFE.EXE
    • ESCANH95.EXE
    • ESCANHNT.EXE
    • ESCANV95.EXE
    • ESPWATCH.EXE
    • ETHEREAL.EXE
    • ETRUSTCIPE.EXE
    • EVPN.EXE
    • EXANTIVIRUS-CNET.EXE
    • EXE.AVXW.EXE
    • EXPERT.EXE
    • EXPLORE.EXE
    • F-AGNT95.EXE
    • F-AGOBOT.EXE
    • FAMEH32.EXE
    • FAST.EXE
    • FCH32.EXE
    • FIH32.EXE
    • FINDVIRU.EXE
    • FIREWALL.EXE
    • FLOWPROTECTOR.EXE
    • FNRB32.EXE
    • FPROT.EXE
    • F-PROT.EXE
    • F-PROT95.EXE
    • FP-WIN.EXE
    • FP-WIN_TRIAL.EXE
    • FRW.EXE
    • FSAA.EXE
    • FSAV.EXE
    • FSAV32.EXE
    • FSAV530STBYB.EXE
    • FSAV530WTBYB.EXE
    • FSAV95.EXE
    • FSGK32.EXE
    • FSM32.EXE
    • FSMA32.EXE
    • FSMB32.EXE
    • F-STOPW.EXE
    • fvprotect.exe
    • GATOR.EXE
    • GBMENU.EXE
    • GBPOLL.EXE
    • GENERICS.EXE
    • GfxAcc.exe
    • GMT.EXE
    • GUARD.EXE
    • GUARDDOG.EXE
    • HACKTRACERSETUP.EXE
    • HBINST.EXE
    • HBSRV.EXE
    • HIJACKTHIS.EXE
    • HOTACTIO.EXE
    • HOTPATCH.EXE
    • HTLOG.EXE
    • HTPATCH.EXE
    • HWPE.EXE
    • hxdef.exe
    • HXDL.EXE
    • HXIUL.EXE
    • IAMAPP.EXE
    • IAMSERV.EXE
    • IAMSTATS.EXE
    • IAOIN.EXE
    • IBMASN.EXE
    • IBMAVSP.EXE
    • ICLOAD95.EXE
    • ICLOADNT.EXE
    • ICMON.EXE
    • ICSSUPPNT.EXE
    • ICSUPP95.EXE
    • ICSUPPNT.EXE
    • IDLE.EXE
    • IEDLL.EXE
    • IEDRIVER.EXE
    • IFACE.EXE
    • IFW2000.EXE
    • INETLNFO.EXE
    • INFUS.EXE
    • INFWIN.EXE
    • INIT.EXE
    • INTDEL.EXE
    • INTREN.EXE
    • IOMON98.EXE
    • IPARMOR.EXE
    • IRIS.EXE
    • ISASS.EXE
    • ISRV95.EXE
    • ISTSVC.EXE
    • JAMMER.EXE
    • jammer2nd.exe
    • JDBGMRG.EXE
    • JEDI.EXE
    • KAVLITE40ENG.EXE
    • KAVPERS40ENG.EXE
    • KAVPF.EXE
    • KEENVALUE.EXE
    • KERIO-PF-213-EN-WIN.EXE
    • KERIO-WRL-421-EN-WIN.EXE
    • KERIO-WRP-421-EN-WIN.EXE
    • KERNEL32.EXE
    • KILLPROCESSSETUP161.EXE
    • LAUNCHER.EXE
    • LDNETMON.EXE
    • LDPRO.EXE
    • LDPROMENU.EXE
    • LDSCAN.EXE
    • LNETINFO.EXE
    • LOADER.EXE
    • LOCALNET.EXE
    • LOCKDOWN.EXE
    • LOCKDOWN2000.EXE
    • LOOKOUT.EXE
    • LORDPE.EXE
    • LSETUP.EXE
    • LUALL.EXE
    • LUAU.EXE
    • LUCOMSERVER.EXE
    • LUINIT.EXE
    • LUSPT.EXE
    • MAPISVC32.EXE
    • MCAGENT.EXE
    • MCMNHDLR.EXE
    • MCSHIELD.EXE
    • MCTOOL.EXE
    • MCUPDATE.EXE
    • MCVSRTE.EXE
    • MCVSSHLD.EXE
    • MD.EXE
    • MFIN32.EXE
    • MFW2EN.EXE
    • MFWENG3.02D30.EXE
    • MGAVRTCL.EXE
    • MGAVRTE.EXE
    • MGHTML.EXE
    • MGUI.EXE
    • MINILOG.EXE
    • MMOD.EXE
    • MONITOR.EXE
    • MOOLIVE.EXE
    • MOSTAT.EXE
    • MPFAGENT.EXE
    • MPFSERVICE.EXE
    • MPFTRAY.EXE
    • MRFLUX.EXE
    • MSAPP.EXE
    • MSBB.EXE
    • MSBLAST.EXE
    • MSCACHE.EXE
    • MSCCN32.EXE
    • MSCMAN.EXE
    • MSCONFIG.EXE
    • MSDM.EXE
    • MSDOS.EXE
    • MSIEXEC16.EXE
    • MSINFO32.EXE
    • MSLAUGH.EXE
    • MSMGT.EXE
    • MSMSGRI32.EXE
    • MSSMMC32.EXE
    • msssss.exe
    • MSSYS.EXE
    • MSVXD.EXE
    • MU0311AD.EXE
    • MWATCH.EXE
    • N32SCANW.EXE
    • NAV.EXE
    • NAVAP.NAVAPSVC.EXE
    • NAVAPSVC.EXE
    • NAVAPW32.EXE
    • NAVDX.EXE
    • NAVENGNAVEX15.NAVLU32.EXE
    • NAVLU32.EXE
    • NAVNT.EXE
    • NAVSTUB.EXE
    • NAVW32.EXE
    • NAVWNT.EXE
    • NC2000.EXE
    • NCINST4.EXE
    • NDD32.EXE
    • NEOMONITOR.EXE
    • NEOWATCHLOG.EXE
    • NETARMOR.EXE
    • NETD32.EXE
    • NETINFO.EXE
    • NETMON.EXE
    • NETSCANPRO.EXE
    • NETSPYHUNTER-1.2.EXE
    • NETUTILS.EXE
    • NISSERV.EXE
    • NISUM.EXE
    • NMAIN.EXE
    • NOD32.EXE
    • NORMIST.EXE
    • NORTON_INTERNET_SECU_3.0_407.EXE
    • NOTSTART.EXE
    • NPF40_TW_98_NT_ME_2K.EXE
    • NPFMESSENGER.EXE
    • NPROTECT.EXE
    • NPSCHECK.EXE
    • NPSSVC.EXE
    • NSCHED32.EXE
    • NSSYS32.EXE
    • NSTASK32.EXE
    • NSUPDATE.EXE
    • NT.EXE
    • NTRTSCAN.EXE
    • NTXconfig.EXE
    • NUI.EXE
    • NUPGRADE.EXE
    • NVARCH16.EXE
    • NVC95.EXE
    • NWINST4.EXE
    • NWSERVICE.EXE
    • NWTOOL16.EXE
    • OLLYDBG.EXE
    • ONSRVR.EXE
    • OPTIMIZE.EXE
    • OSTRONET.EXE
    • OTFIX.EXE
    • OUTPOST.EXE
    • OUTPOSTINSTALL.EXE
    • OUTPOSTPROINSTALL.EXE
    • PADMIN.EXE
    • PANIXK.EXE
    • PATCH.EXE
    • PAVCL.EXE
    • PAVPROXY.EXE
    • PAVSCHED.EXE
    • PAVW.EXE
    • PCC2002S902.EXE
    • PCC2K_76_1436.EXE
    • PCCIOMON.EXE
    • PCCNTMON.EXE
    • PCCWIN97.EXE
    • PCCWIN98.EXE
    • PCDSETUP.EXE
    • PCFWALLICON.EXE
    • PCIP10117_0.EXE
    • PCSCAN.EXE
    • PDSETUP.EXE
    • PENIS.EXE
    • PERISCOPE.EXE
    • PERSFW.EXE
    • PERSWF.EXE
    • PF2.EXE
    • PFWADMIN.EXE
    • PGMONITR.EXE
    • PINGSCAN.EXE
    • PLATIN.EXE
    • POP3TRAP.EXE
    • POPROXY.EXE
    • POPSCAN.EXE
    • PORTDETECTIVE.EXE
    • PORTMONITOR.EXE
    • POWERSCAN.EXE
    • PPINUPDT.EXE
    • PPTBC.EXE
    • PPVSTOP.EXE
    • PRIZESURFER.EXE
    • PRMT.EXE
    • PRMVR.EXE
    • PROCDUMP.EXE
    • PROCESSMONITOR.EXE
    • PROCEXPLORERV1.0.EXE
    • PROGRAMAUDITOR.EXE
    • PROPORT.EXE
    • PROTECTX.EXE
    • PSPF.EXE
    • PURGE.EXE
    • PUSSY.EXE
    • PVIEW95.EXE
    • QCONSOLE.EXE
    • QSERVER.EXE
    • RAPAPP.EXE
    • rasmngr.exe
    • RAV7.EXE
    • RAV7WIN.EXE
    • RAV8WIN32ENG.EXE
    • RAVMOND.exe
    • RAY.EXE
    • RB.EXE
    • RB32.EXE
    • RCSYNC.EXE
    • REALMON.EXE
    • REGED.EXE
    • RESCUE.EXE
    • RESCUE32.EXE
    • RRGUARD.EXE
    • RSHELL.EXE
    • RTVSCAN.EXE
    • RTVSCN95.EXE
    • RULAUNCH.EXE
    • RUNDLL.EXE
    • RUNDLL16.EXE
    • RUXDLL32.EXE
    • SAFEWEB.EXE
    • SAHAGENT.EXE
    • SAVE.EXE
    • SAVENOW.EXE
    • SBSERV.EXE
    • SC.EXE
    • SCAM32.EXE
    • SCAN32.EXE
    • SCAN95.EXE
    • SCANPM.EXE
    • SCRSCAN.EXE
    • SCRSVR.EXE
    • SD.EXE
    • SERV95.EXE
    • SERVLCE.EXE
    • SERVLCES.EXE
    • SETUP_FLOWPROTECTOR_US.EXE
    • SETUPVAMEEVAL.EXE
    • SFC.EXE
    • SGSSFW32.EXE
    • SH.EXE
    • SHELLSPYINSTALL.EXE
    • SHN.EXE
    • SHOWBEHIND.EXE
    • SMC.EXE
    • SMS.EXE
    • SMSS32.EXE
    • SOAP.EXE
    • SOFI.EXE
    • SPERM.EXE
    • SPF.EXE
    • SPHINX.EXE
    • SPOOLCV.EXE
    • SPOOLSV32.EXE
    • SPYXX.EXE
    • SREXE.EXE
    • SRNG.EXE
    • SS3EDIT.EXE
    • SSG_4104.EXE
    • SSGRATE.EXE
    • ssgrate.exe
    • ST2.EXE
    • START.EXE
    • STCLOADER.EXE
    • SUPFTRL.EXE
    • SUPPORT.EXE
    • SUPPORTER5.EXE
    • SVC.EXE
    • SVCHOSTC.EXE
    • SWEEP95.EXE
    • SWEEPNET.SWEEPSRV.SYS.SWNETSUP.EXE
    • SYMPROXYSVC.EXE
    • SYMTRAY.EXE
    • SYSEDIT.EXE
    • SYSTEM.EXE
    • SYSTEM32.EXE
    • Systra.exe
    • SYSUPD.EXE
    • sysxp.exe
    • taskmanagr.exe
    • TASKMO.EXE
    • TASKMON.EXE
    • TAUMON.EXE
    • TBSCAN.EXE
    • TC.EXE
    • TCA.EXE
    • TCM.EXE
    • TDS2-98.EXE
    • TDS2-NT.EXE
    • TDS-3.EXE
    • TEEKIDS.EXE
    • TFAK.EXE
    • TFAK5.EXE
    • TGBOB.EXE
    • TITANIN.EXE
    • TITANINXP.EXE
    • TRACERT.EXE
    • TRICKLER.EXE
    • TRJSCAN.EXE
    • TRJSETUP.EXE
    • TROJANTRAP3.EXE
    • TSADBOT.EXE
    • TVMD.EXE
    • TVTMD.EXE
    • UNDOBOOT.EXE
    • UPDAT.EXE
    • UPDATE.EXE
    • UPGRAD.EXE
    • UTPOST.EXE
    • VBCMSERV.EXE
    • VBCONS.EXE
    • VBUST.EXE
    • VBWIN9X.EXE
    • VBWINNTW.EXE
    • VCSETUP.EXE
    • VET32.EXE
    • VET95.EXE
    • VETTRAY.EXE
    • VFSETUP.EXE
    • VIR-HELP.EXE
    • VIRUSMDPERSONALFIREWALL.EXE
    • VisualGuard.exe
    • VNLAN300.EXE
    • VNPC3000.EXE
    • VPC32.EXE
    • VPC42.EXE
    • VPFW30S.EXE
    • VPTRAY.EXE
    • VSCAN40.EXE
    • VSCENU6.02D30.EXE
    • VSCHED.EXE
    • VSECOMR.EXE
    • VSHWIN32.EXE
    • VSISETUP.EXE
    • VSMAIN.EXE
    • VSMON.EXE
    • VSSTAT.EXE
    • VSWIN9XE.EXE
    • VSWINNTSE.EXE
    • VSWINPERSE.EXE
    • W32DSM89.EXE
    • W9X.EXE
    • WATCHDOG.EXE
    • WEBDAV.EXE
    • WEBSCANX.EXE
    • WEBTRAP.EXE
    • WFINDV32.EXE
    • WGFE95.EXE
    • WHOSWATCHINGME.EXE
    • WIMMUN32.EXE
    • WIN32.EXE
    • WIN32US.EXE
    • WINACTIVE.EXE
    • WIN-BUGSFIX.EXE
    • WINDOW.EXE
    • WINDOWS.EXE
    • WININETD.EXE
    • WININIT.EXE
    • WININITX.EXE
    • WINLOGIN.EXE
    • WINMAIN.EXE
    • WINPPR32.EXE
    • WINRECON.EXE
    • WINSSK32.EXE
    • WINSTART.EXE
    • WINSTART001.EXE
    • WINTSK32.EXE
    • WINUPDATE.EXE
    • winxp.exe
    • WKUFIND.EXE
    • WNAD.EXE
    • WNT.EXE
    • wowpos32.exe
    • WRADMIN.EXE
    • WRCTRL.EXE
    • wuamga.exe
    • wuamgrd.exe
    • WUPDATER.EXE
    • WUPDT.EXE
    • WYVERNWORKSFIREWALL.EXE
    • XPF202EN.EXE
    • ZAPRO.EXE
    • ZAPSETUP3001.EXE
    • ZATUTOR.EXE
    • ZONALM2601.EXE
    • ZONEALARM.EXE

  11. Locates the ICQ installation folder by querying the registry key HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\App Paths\ICQ.exe.

    The worm then copies itself to the folder it found, using one of the following file names:
    • 1.exe
    • mymusic.pif
    • rulezzz.scr
    • matrix.scr
    • newvirus.exe
    • mylove.pif
    • antibush.scr
    • icqcrack.exe
    • myfack.pif
    • hello.pif
    • pinguin5.exe
    • you the best.scr
    • fantasy.scr
    • coolgame.zip<many space>.exe
    • mynewphoto.zip<many space>.exe
    • mult.exe

  12. Spread through an ICQ Message Session by sending one of the following messages. Accessing the link will result in a copy of the worm being downloaded:

    • fun game http:/ / [exploit link] :/-)))
    • funy game http:/ [exploit link] /  =)
    • game http:/ / [exploit link] :/-)
    • view my postcard http:/ / [exploit link]
    • merry-christmas http:/ / [exploit link]  !!!
    • happy x-mas http:/ / [exploit link]  !
    • lol http:/ / [exploit link]
    • http:/ / [exploit link]
    • shit!!! http:/ / [exploit link]
    • http:/ / [exploit link]
    • about Saddam Hussein http:/ / [exploit link]
    • sex on mars http:/ / [exploit link] LOL

  13. The worm may drop the file MYDOOMANKILL.BAT, which deletes the worm's file before it can even execute.


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: Takayoshi Nakayama

Discovered: January 28, 2005
Updated: February 13, 2007 12:32:37 PM
Also Known As: Win32.Mydoom.AL [Computer Asso, Email-Worm.Win32.Mydoom.ah [Ka, W32/Mydoom.av@MM [McAfee], W32/MyDoom-AN [Sophos], WORM_MYDOOM.AN [Trend Micro]
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.Mydoom.AN@mm.
  5. Reverse the changes made to the registry.
For details on each of these steps, read the following instructions.

1. To disable 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:
Note:
When you are completely finished with the removal procedure and are satisfied that the threat has been removed, re-enable System Restore by following the instructions in the aforementioned documents.

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. To update 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 daily. 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.

    Note: If you see an error, such as LU1418, when you try to run LiveUpdate and you cannot get the Web site hosting the Intelligent Updater, it is likely that the worm has modified the Hosts file. You can either download and install LiveUpdate 2.5, which can remove Symantec entries from that file, or you can edit it yourself. See the instructions for both in the "Additional Information" section below.


3. To restart the computer in Safe mode or VGA mode
Shut down the computer and turn off the power. Wait for at least 30 seconds, and then restart 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, read the document, "How to start the computer in Safe Mode."
  • For Windows NT 4 users, restart the computer in VGA mode.

4. To scan for and delete 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.Mydoom.AN@mm, click Delete.
  4. If you are still in Safe mode, restart the computer in Normal mode before proceeding to the next section.


5. To reverse the changes made to the registry
Important: 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 subkeys only. Read the document, "How to make a backup of the Windows registry ," for instructions.

  1. Click Start > Run.
  2. Type regedit

    Then click OK.

  3. Navigate to the subkey:

    HKEY_LOCAL_MACHINE\Software\Microsoft\Internet Explorer

  4. In the right pane, delete the values:

    "Mshdfgq" = "[hex value]"
    "Terjt"  = "[hex value]"

  5. Navigate to the subkeys:

    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\policies
    HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\policies

  6. In the right pane, delete the value:

    "DisableRegistryTools" = "0"

  7. Navigate to and delete the subkey:

    HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\NetBios Ext32

  8. Exit the Registry Editor.

  9. Restart the computer in Normal mode. For instructions, read the section on returning to Normal mode in the document, "How to start the computer in Safe Mode."


Writeup By: Takayoshi Nakayama