W32.Yaha.AA@mm

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Discovered: September 16, 2003
Updated: February 13, 2007 12:07:28 PM
Type: Worm
Systems Affected: Windows


W32.Yaha.AA@mm is a variant of the W32.Yaha.T@mm worm that does the following:

  • Terminates some antivirus and firewall processes.
  • Uses its own SMTP engine to email itself to all the contacts in the Windows Address Book, MSN Messenger, .NET Messenger, Yahoo Pager, ICQ Pager, as well as in all the files whose extensions contain the letters HT.
  • Installs a keylogger and emails the logs to its author.
  • Contains a destructive payload that may be triggered if the system time zone is GMT+5.
  • Performs Denial of Service (DoS) attack to some specified and random hosts on ports 80, 135, 139, and 445.

The email message has a randomly chosen subject line, message, and attachment name. The attachment will have a .com, .exe, .scr, or .zip file extension.

This threat is written in the Microsoft Visual C++ programming language and is compressed with Aspack.

Antivirus Protection Dates

  • Initial Rapid Release version September 17, 2003
  • Latest Rapid Release version September 28, 2010 revision 054
  • Initial Daily Certified version September 17, 2003
  • Latest Daily Certified version September 28, 2010 revision 036
  • Initial Weekly Certified release date September 17, 2003

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

Writeup By: Yana Liu

Discovered: September 16, 2003
Updated: February 13, 2007 12:07:28 PM
Type: Worm
Systems Affected: Windows


When W32.Yaha.AA@mm runs, it does the following:

  1. Copies itself as the following:
    • %System%\msexec.exe
    • %System%\msupdat.exe


      Notes:
    • The attributes of these two files are set to Hidden.
    • %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. May copy itself to the %Windir% folder as:
    • Love.scr
    • Project.exe
    • Romantic.scr
    • FixKlez.com
    • FixElkern.com
    • Cupid.scr
    • Notes.exe
    • MyPic.scr
    • FreakOut.exe
    • THEROCK.scr
    • Britney_Sample.scr
    • zXXX_BROWSER.exe
    • Valentines_Day.scr
    • Beautifull.scr
    • Ways_To_Earn_Money.exe
    • MyProfile.scr
    • My_Sexy_Pic.scr
    • KOF.exe
    • King_of_Figthers.exe
    • KOF2002.exe
    • KOF_The_Game.exe
    • KOF_Demo.exe
    • KOF_Sample.exe
    • KOF_Fighting.exe
    • Hacker.scr
    • Romeo_Juliet.scr
    • Free_Love_Screensavers.scr
    • Ravs.scr
    • zDenka.scr
    • Jenna_Jemson.scr
    • Sexy_Jenna.scr
    • Sweetheart.scr
    • up_life.scr
    • World_Tour.scr
    • Hacker_The_LoveStory.scr
    • VXer_The_LoveStory.scr
    • Services.scr
    • Body_Building.scr
    • Peace.scr
    • Screensavers.scr
    • xxx4Free.scr
    • Hardcore4Free.scr
    • Playboy.scr
    • Plus2.scr
    • Plus6.scr
    • Real.scr
    • Sex.scrSoccer.scr
    • Stone.scr
    • I_Love_You.scr
    • SQL_4_Free.scr
    • Codeproject.scr
    • The_Best.scr


      Note: %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.

  3. Creates the following files:
    • %System%\Taskmgr32.dll
    • %Windir%\Hosts
    • %Windir%\Lmhosts
    • %Cookies%\Cookie.dat


      Notes:
      • These files are not viral by themselves. Therefore, Symantec antivirus products do no detect them. Manually delete them if your system is infected with the worm.
      • %Cookies% is a variable. The worm locates the Cookies folder and inserts Keylogger.Trojan to that location.


  4. Creates a file, %Cookies%\anyuser@yahoo.com.txt, which is detected as Keylogger.Trojan.

  5. Adds a value:

    "MicrosoftServiceManager"="%System%\msupdat.exe"

    to the registry key:

    HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run

    so that the worm runs when you restart Windows.

  6. Modifies the value to:

    "@"="%System%\msexc.exe""%1"%*"

    in the registry keys:
    • HKEY_LOCAL_MACHINE\Software\CLASSES\exefile\shell\open\command
    • HKEY_LOCAL_MACHINE\Software\CLASSES\comfile\shell\open\command
    • HKEY_LOCAL_MACHINE\Software\CLASSES\batfile\shell\open\command

  7. Deletes the values:

    "WinServices"
    "syshelp"
    "WinGate initialize"
    "Module Call initialize"
    "WindowsMGM"

    from the registry key:

    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run

  8. Deletes the value:

    "WinServices"

    from the registry key:

    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\RunServices

  9. Deletes the value:

    "WindowsMGM"

    from the registry key:

    HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Run

  10. Enumerates the active processes, and if the process contains any of the following strings, it will attempt to terminate a process:
    • _AVP32
    • _AVP32.EXE
    • _AVPCC
    • _AVPCC
    • _AVPCC.EXE
    • _AVPM
    • _AVPM.EXE
    • AckWin32
    • AckWin32
    • ACKWIN32
    • AckWin32.exe
    • AckWin32.exe
    • ACKWIN32.EXE
    • ADVXDWIN
    • ADVXDWIN.EXE
    • agentw.exe
    • ALERTSVC
    • ALERTSVC.EXE
    • ALOGSERV
    • alogserv
    • ALOGSERV
    • alogserv.exe
    • ALOGSERV.EXE
    • AMON9X
    • AMON9X.EXE
    • ANTI-TROJAN
    • ANTI-TROJAN.EXE
    • ANTS
    • ANTS.EXE
    • APVXDWIN
    • apvxdwin
    • APVXDWIN.EXE
    • apvxdwin.exe
    • ATCON
    • ATCON.EXE
    • ATUPDATER
    • ATUPDATER.EXE
    • ATWATCH
    • ATWATCH.EXE
    • AUTODOWN
    • AutoDown
    • AUTODOWN
    • AUTODOWN.exe
    • AutoDown.exe
    • AUTODOWN.EXE
    • AutoTrace
    • AutoTrace.exe
    • AVCONSOL
    • AVCONSOL.EXE
    • AVGCC32
    • AVGCC32
    • AVGCC32.EXE
    • AVGCC32.EXE
    • AVGCTRL
    • Avgctrl
    • AVGCTRL.EXE
    • Avgctrl.exe
    • AvgServ
    • AVGSERV
    • AvgServ
    • AVGSERV
    • AVGSERV.EXE
    • AVGSERV.EXE
    • AVGSERV9
    • AVGSERV9.EXE
    • AVGW
    • AVGW.EXE
    • avkpop
    • avkpop.exe
    • AvkServ
    • AvkServ.exe
    • avkservice
    • avkservice.exe
    • avkwctl9
    • avkwctl9.exe
    • AVP
    • AVP.EXE
    • AVP32
    • AVP32.EXE
    • AVPCC
    • avpm
    • avpm
    • AVPM
    • avpm.exe
    • AVPM.EXE
    • Avsched32
    • Avsched32.exe
    • AvSynMgr
    • AVSYNMGR
    • AVSYNMGR
    • AvSynMgr
    • AVSYNMGR
    • AVSYNMGR.exe
    • AVWINNT
    • AVWINNT.EXE
    • AVXMONITOR9X
    • AVXMONITOR9X
    • AVXMONITOR9X.EXE
    • AVXMONITOR9X.EXE
    • AVXMONITORNT
    • AVXMONITORNT
    • AVXMONITORNT.EXE
    • AVXMONITORNT.EXE
    • AVXQUAR
    • AVXQUAR
    • AVXQUAR.EXE
    • AVXQUAR.EXE.EXE
    • AVXW
    • AVXW.EXE
    • blackd
    • BLACKD
    • blackd.exe
    • BLACKD.EXE
    • BlackICE
    • BlackICE.exe
    • CDP.EXE
    • cfgWiz
    • cfgWiz.exe
    • Claw95
    • Claw95
    • CLAW95
    • Claw95.exe
    • Claw95.exe
    • CLAW95.EXE
    • Claw95cf
    • CLAW95CF
    • Claw95cf.exe
    • CLAW95CF.EXE
    • cleaner
    • cleaner.EXE
    • cleaner3
    • cleaner3.EXE
    • CMGRDIAN
    • CMGrdian
    • CMGRDIAN
    • CMGRDIAN.EXE
    • CONNECTIONMONITOR
    • CONNECTIONMONITOR.EXE
    • CPD
    • cpd.exe
    • cpd.exe
    • CPDClnt
    • CPDCLNT.EXE
    • CPDClnt.exe
    • CTRL
    • CTRL.EXE
    • defalert
    • defalert.exe
    • defscangui
    • defscangui.exe
    • DEFWATCH
    • DEFWATCH.EXE
    • DOORS
    • DOORS
    • DOORS.EXE
    • DOORS.EXE
    • DVP95
    • DVP95.EXE
    • DVP95_0
    • DVP95_0.EXE
    • EFPEADM
    • EFPEADM
    • EFPEADM.exe
    • EFPEADM.EXE
    • ETRUSTCIPE
    • ETRUSTCIPE
    • ETRUSTCIPE.exe
    • ETRUSTCIPE.EXE
    • EVPN
    • EVPN
    • EVPN.exe
    • EVPN.EXE
    • EXPERT
    • EXPERT.EXE
    • F-AGNT95
    • F-AGNT95.EXE
    • fameh32
    • fameh32.exe
    • fch32
    • fch32.exe
    • fih32
    • fih32.exe
    • fnrb32
    • fnrb32.exe
    • F-PROT
    • F-PROT.EXE
    • F-PROT95
    • F-PROT95.EXE
    • FP-WIN
    • FP-WIN.EXE
    • FRW
    • FRW
    • FRW.EXE
    • FRW.EXE
    • fsaa
    • fsaa.exe
    • fsav32
    • fsav32.exe
    • fsgk32
    • fsgk32.exe
    • fsm32
    • fsm32.exe
    • fsma32
    • fsma32.exe
    • fsmb32
    • fsmb32.exe
    • f-stopw
    • F-STOPW
    • f-stopw.exe
    • F-STOPW.EXE
    • gbmenu
    • gbmenu.exe
    • GBPOLL
    • gbpoll
    • GBPOLL.EXE
    • gbpoll.exe
    • GENERICS
    • GENERICS.EXE
    • GUARD
    • GUARD
    • GUARD.EXE
    • GUARD.EXE
    • GUARDDOG
    • GUARDDOG.EXE
    • iamapp
    • IAMAPP
    • IAMAPP
    • iamapp.exe
    • IAMAPP.EXE
    • IAMAPP.EXE
    • iamserv
    • IAMSERV
    • iamserv.exe
    • IAMSERV.EXE
    • IAMSTATS
    • IAMSTATS.EXE
    • ICLOAD95
    • ICLOAD95.EXE
    • ICLOADNT
    • ICLOADNT
    • ICLOADNT.EXE
    • ICLOADNT.EXE
    • ICMON
    • ICMON.EXE
    • ICSUPP95
    • ICSUPP95
    • ICSUPP95.EXE
    • ICSUPP95.EXE
    • ICSUPPNT
    • ICSUPPNT.EXE
    • IFACE
    • IFACE.EXE
    • IOMON98
    • IOMON98
    • IOMON98.EXE
    • IOMON98.EXE
    • ISRV95
    • ISRV95.EXE
    • JEDI
    • JEDI.EXE
    • LDNETMON
    • LDNETMON.EXE
    • LDPROMENU
    • LDPROMENU.EXE
    • LDSCAN
    • LDSCAN.EXE
    • LOCKDOWN
    • LOCKDOWN.EXE
    • lockdown2000
    • LOCKDOWN2000
    • lockdown2000.exe
    • LOCKDOWN2000.EXE
    • LUALL
    • LUALL.EXE
    • LUCOMSERVER
    • LUCOMSERVER.EXE
    • LUSPT
    • LUSPT.exe
    • MCAGENT
    • MCAGENT.EXE
    • MCMNHDLR
    • MCMNHDLR.EXE
    • Mcshield.exe
    • MCTOOL
    • MCTOOL.EXE
    • MCUPDATE
    • MCUPDATE.EXE
    • MCVSRTE
    • MCVSRTE.EXE
    • MCVSSHLD
    • MCVSSHLD.EXE
    • MGAVRTCL
    • MGAVRTCL.EXE
    • MGAVRTE
    • MGAVRTE.EXE
    • MGHTML
    • MGHTML.EXE
    • MINILOG
    • MINILOG.EXE
    • Monitor
    • MONITOR
    • Monitor.exe
    • MONITOR.EXE
    • MOOLIVE
    • MOOLIVE.EXE
    • MPFAGENT.EXE
    • MPFSERVICE
    • MPFSERVICE.exe
    • MPFTRAY.EXE
    • MWATCH
    • MWATCH
    • MWATCH.exe
    • MWATCH.EXE
    • NAV Auto-Protect
    • NAV Auto-Protect
    • NAVAP
    • NAVAP
    • navapsvc
    • navapsvc
    • NAVAPSVC.EXE
    • navapsvc.exe
    • navapw32
    • NAVAPW32
    • NAVAPW32.EXE
    • NAVENGNAVEX15
    • NAVENGNAVEX15
    • NAVLU32
    • NAVLU32.EXE
    • Navw32
    • NAVW32
    • Navw32.exe
    • NAVWNT
    • NAVWNT.EXE
    • NDD32
    • NDD32.EXE
    • NeoWatchLog
    • NeoWatchLog.exe
    • NETUTILS
    • NETUTILS.EXE
    • NISSERV
    • NISSERV
    • NISSERV.EXE
    • NISSERV.EXE
    • NISSERV.EXE
    • NISUM
    • NISUM
    • NISUM.EXE
    • NISUM.EXE
    • NMAIN
    • NMAIN.EXE
    • NORMIST
    • NORMIST
    • NORMIST.EXE
    • NORMIST.EXE
    • notstart
    • notstart.exe
    • NPROTECT
    • NPROTECT.EXE
    • npscheck
    • npscheck.exe
    • NPSSVC
    • NPSSVC.EXE
    • NSCHED32
    • NSCHED32.EXE
    • ntrtscan
    • ntrtscan.EXE
    • NTVDM
    • NTVDM.EXE
    • NTXconfig
    • NTXconfig.exe
    • Nui.EXE
    • Nupgrade
    • Nupgrade.exe
    • NVC95
    • NVC95
    • NVC95.EXE
    • NVC95.EXE
    • NVSVC32
    • NVSVC32
    • NWService
    • NWService.exe
    • NWTOOL16
    • NWTOOL16.EXE
    • PADMIN
    • PADMIN.EXE
    • PAVPROXY
    • pavproxy
    • PAVPROXY.EXE
    • pavproxy.exe
    • PCCIOMON
    • PCCIOMON
    • PCCIOMON.EXE
    • PCCIOMON.EXE
    • pccntmon
    • pccntmon.EXE
    • pccwin97
    • pccwin97.EXE
    • PCCWIN98
    • PCCWIN98.EXE
    • pcscan
    • pcscan.EXE
    • PERSFW
    • PERSFW.EXE
    • PERSWF
    • PERSWF.EXE
    • POP3TRAP
    • POP3TRAP.EXE
    • POPROXY
    • POPROXY.EXE
    • PORTMONITOR
    • PORTMONITOR.EXE
    • PROCESSMONITOR
    • PROCESSMONITOR.EXE
    • PROGRAMAUDITOR
    • PROGRAMAUDITOR.EXE
    • PVIEW95
    • PVIEW95.EXE
    • rapapp.exe
    • RAV7
    • RAV7.EXE
    • RAV7WIN
    • RAV7WIN.EXE
    • REALMON
    • REALMON.EXE
    • Rescue
    • RESCUE
    • Rescue.exe
    • RESCUE.EXE
    • RTVSCN95
    • RTVSCN95.EXE
    • RULAUNCH
    • RULAUNCH.EXE
    • sbserv
    • sbserv.exe
    • SCAN32
    • SCAN32.EXE
    • SCRSCAN
    • SCRSCAN.EXE
    • Smc
    • SMC.EXE
    • Sphinx
    • SPHINX
    • Sphinx.exe
    • SPHINX.EXE
    • SPYXX
    • SPYXX.EXE
    • SS3EDIT
    • SS3EDIT.EXE
    • SWEEP95
    • SWEEP95.EXE
    • SweepNet
    • SweepNet
    • SWEEPSRV.SYS
    • SWEEPSRV.SYS
    • SWNETSUP
    • SWNETSUP.EXE
    • SymProxySvc
    • SymProxySvc.exe
    • SYMTRAY
    • SYMTRAY.EXE
    • TAUMON
    • TAUMON.EXE
    • TC.EXE
    • TCA
    • TCA.EXE
    • TCM
    • TCM.EXE
    • TDS-3
    • TDS-3.EXE
    • TFAK
    • TFAK.EXE
    • vbcmserv
    • vbcmserv
    • vbcmserv.exe
    • vbcmserv.exe
    • VbCons
    • VbCons
    • VbCons.exe
    • VbCons.exe
    • VET32
    • VET32
    • VET32.exe
    • VET32.EXE
    • Vet95
    • VET95
    • Vet95.exe
    • VET95.EXE
    • VetTray
    • VETTRAY
    • VetTray.exe
    • VETTRAY.EXE
    • VIR-HELP
    • VIR-HELP.EXE
    • VPC32
    • VPC32.EXE
    • VPTRAY
    • VPTRAY.EXE
    • VSCHED
    • VSCHED.EXE
    • VSECOMR
    • VSECOMR
    • VSECOMR.EXE
    • VSECOMR.EXE
    • vshwin32
    • VSHWIN32
    • VSHWIN32
    • VSHWIN32.EXE
    • VSMAIN
    • VSMAIN.EXE
    • vsmon
    • vsmon.exe
    • VSMON.EXE
    • VSSTAT
    • VSSTAT
    • VSSTAT.EXE
    • WATCHDOG
    • WATCHDOG.EXE
    • WEBSCANX
    • WEBSCANX
    • WEBSCANX.EXE
    • WEBTRAP
    • WEBTRAP.EXE
    • WGFE95
    • WGFE95.EXE
    • WIMMUN32
    • WIMMUN32.EXE
    • WrAdmin
    • WRADMIN
    • WRADMIN
    • WrAdmin.exe
    • WRADMIN.EXE
    • WRADMIN.EXE
    • WrCtrl
    • WRCTRL
    • WRCTRL
    • WrCtrl.exe
    • WRCTRL.EXE
    • zapro
    • zapro.exe
    • zonealarm
    • zonealarm.exe
    • WINSERVICES
    • TCPSVS32
    • NAV32_LOADER
    • WINGATE.EXE
    • SYSHELP.EXE
    • WINMGM32.EXE
    • WINK
    • AAAA
  11. Enumerates the active windows, and if the name of the window contains any of the following strings, the worm will attempt to terminate that process:
    • Windows Task Manager
    • System Configuration Utility
    • Registry Editor
    • Process Viewer

  12. Attempts to delete the following files:
    • %System%\WinServices.exe
    • %System%\Nav32_loader.exe
    • %System%\Tcpsvs32.exe
    • %System%\Syshelp.exe
    • %System%\WinGate.exe
    • %System%\WinRpcsrv.exe
    • %System%\Winmgm32.exe
    • %Windir%\SNTMLS.DAT

  13. Installs a keylogger and emails the log to a predefined email address.

  14. Performs DoS attack to the following Web sites and some random hosts on ports 80, 135, 139, and 445:
    • www.jamaat.org
    • www.klc.org.pk
    • www.pak.gov.pk
    • www.piac.com.pk
    • www.ummah.org.uk

  15. If the time zone is GMT+5, a destructive payload may be triggered, which may overwrite the hard disk.

  16. Scans the "%Windir%\INETPUB\WWWROOT" folder and overwrites all the files, whose extension is .htm or .html, with the following text:

    <BR><BR><BR><CENTER><B><U> Ha..Ha..Haaa...</CENTER></U></B>

  17. Scans all the fixed/remote disks and all the shared folders and attempts to do the following:
    • Copy itself as to the following folders as Rege32.exe:
      • \WINDOWS
      • \WIN98
      • \WIN95
      • \WINNT
      • \WINME
      • \WINME
      • \WINXP

    • Add the following line to the [windows] section of the Win.ini file:

      run=REGE32.EXE

    • Copy itself as:

      \Documents and Settings\All Users\Start Menu\Programs\Startup\MSNTUPDATE.EXE


Email Routine Details
The worm uses its own SMTP engine to email itself to all the contacts listed in the Windows Address Book, MSN Messenger, .NET Messenger, Yahoo Pager, ICQ Pager, as well as in all the files whose extensions contain the letters "ht." It attempts to send the email through the default SMTP server address, which the infected computer uses. If the worm cannot find this information, then it will use one of the many SMTP server addresses that are hard-coded into the worm.

Subject: The subject line is one of the following:
  • Hi..
  • Things to note...
  • Alert
  • My Feelings 4 U
  • I am in Love..
  • why u send me this...
  • wanna exchange..
  • check this..
  • 4 U only..
  • Private Documents....
  • Lovers Screensaver
  • Valentine Screensavers
  • Matrix - The Game
  • KOF - The Game
  • Ultimate Hackers tool unleashed..
  • OE 6 Patch
  • Free Disney Screensavers
  • SuSoft SCR Maker
  • GC Chat Networks
  • Yahoo Matchmakers
  • Hi
  • Hello
  • Check this s**t
  • hey check it yaar
  • Who is ur Best Friend
  • make ur friend happy
  • True Love
  • Looking for Friendship
  • Let's Dance and forget pains
  • love speaks from the heart
  • Say 'I Like You' To ur friend
  • Need a friend?
  • war Againest Loneliness
  • How sweet this Screen saver
  • love speaks from the heart
  • Shake it baby
  • The world of Friendship
  • Check ur friends Circle
  • Wowwwwwwwwwww check it
  • Are you looking for Love
  • Learn How To Love
  • Find a good friend
  • to ur friends
  • to ur lovers
  • U realy Want this
  • The Hotmail Hack
  • You are so sweet
  • I Love You
  • One Hacker's Love
  • I am in Love
  • Are you in Love
  • Sample Screensavers
  • Project
  • Free Screensavers 4 U
  • Patch for Klez.H
  • Patch for Elkern.gen
  • Lovers Corner
  • Things to note
  • Wanna be friends ?
  • Freak Out
  • WWE Screensavers
  • Free Screensavers
  • Free XXX
  • Free Screenavers of Love
  • Who is your Valentine
  • Are you beautiful
  • Need money ??
  • Wanna be friends ??
  • Free Demo Game
  • Demo KOF 2002
  • Play KOF 2002 4 Free
  • Wanna Rumble ??
  • Wanna Brawl ??
  • The King of KOF
  • Sample KOF 2002
  • Wanna be friends ??
  • Wanna Hack ??
  • Feel the fragrance of Love
  • Free Screensavers
  • Free rAVs Screensavers
  • XXX Screensavers
  • Jenna 4 U
  • Screensavers from Club Jenna
  • Wanna be my sweetheart ??
  • Whats up
  • World Tour
  • One Hacker's Love
  • One Virus Writer's Story
  • Visit us
  • Wanna be a HE-MAN
  • We want peace
  • Free Screensavers 4 U
  • XXX Screensavers 4 U
  • Hardcore Screensavers 4 U
  • Sample Playboy
  • Check it out
  • Sexy Screensavers 4 U
  • Are you a Soccer Fan ?
  • Wanna be like a stone ?
  • I Love You..
  • Learn SQL 4 Free
  • Free Win32 API source
  • Are you the BEST
  • sexy call girls
  • Its me ..
  • My favourite links ...

From: The From field may be a fake email address constructed from the following:
  • Love Inc.
  • Jericho
  • Romantic Screensavers
  • Trend Micro
  • Norton Antivirus
  • McAfee Inc.
  • Cupid
  • Jonathan
  • Susan
  • Noopman
  • The Rock
  • britneyspears.org
  • zporNstarS
  • Lovers Screensavers
  • Valentine Screensavers
  • American Beauty
  • John Vandervochich
  • Ross Anderson
  • Jasmine Stevens
  • Ralph Jones
  • Clark Steel
  • Kyo Kusanagi
  • Iori Yagami
  • Terry Bogard
  • Omega Rugal
  • KOF Online
  • Cathy Kindergarten
  • Jaucques Antonio Barkinstein
  • Romeo & Juliet
  • Screensavers of Love
  • Raveena Pusanova
  • Zdenka Podkapova
  • Jenna Jameson
  • Club Jenna
  • Veronica Anderson
  • Benting
  • Paul Owen
  • admin@hackers.com
  • admin@viruswriters.com
  • admin@hackersclub.com
  • Nicolas Schwarzeneggar
  • Keanu Stevenson
  • Nomadic Screensavers
  • XXX Screensavers
  • Hardcore Screensavers
  • Playboy Inc.
  • Plus 2
  • Plus 6
  • Real Inc.
  • Sexy Screensavers
  • Super Soccer
  • Rocking Stone
  • me2K
  • SQL Library
  • Codeproject
  • Klein Anderson
  • loverscreensavers@love.com
  • caijob@online.sh.cn
  • romanticscreensavers@love.com
  • av_patch@trendmicro.com
  • av_patch@norton.com
  • av_patch@mcafee.com
  • cupid@freescreensavers.com
  • yjworks@online.sh.cn
  • samsun@online.sh.cn
  • ericpan@online.com.pk
  • therock@wwe.com
  • newsletters@britneyspears.org
  • admin@zpornstars.com
  • screensavers@lovers.com
  • valentinescreensavers@t2k.com
  • luoairong@21cn.com
  • hamada@seikosangyo.com
  • lubing@7135.com
  • zhouyuye@citiz.net
  • admin@kofonline2.com
  • cathy@21cn.com
  • super@21cn.com
  • DNA_seraph@163.com
  • love@lovescreensavers.com
  • ravs@go2pussy.com
  • zdenka@zpornstars.com
  • jenna@jennajameson.com
  • admin@clubjenna.com
  • services@tcsonline2.com
  • btq@2632.com
  • paul@kqscore2.com
  • admin@hackers2.com
  • admin@viruswriters.com
  • admin@hackersclub2.com
  • nics@noma.com
  • kkn@k2k.comscreensavers@nomadic.com
  • free@xxxscreensavers.com
  • free@hardcorescreensavers.com
  • sales@playboy.com
  • plus@real.com
  • sales@real.com
  • free@sexyscreensavers.com
  • marketing@suppersoccer.com
  • stone@esterplaza.com
  • me@me2K.com
  • free@sql.library.com
  • admin@codeproject2.com
  • kl@aminoprojects.com
  • Lovers Inc
  • St. Valentine
  • SEGA Corp.
  • Playstation
  • HACKTEQ.NET
  • Infocom Technologies
  • Disney Int.
  • SuSoft Technologies Pvt. Ltd.
  • GC Softwares Ltd.
  • loverscr@lovers.com
  • valscr@freescreensavers.com
  • marketing@sega.com
  • marketing@playstation.com
  • sells@haqteq.net
  • info@infotech.com
  • marketing44@disney.biz
  • sales@susoft.net
  • sales@gcnetwork.com
  • Cindy
  • Linda
  • Salma
  • t sales
  • cindy@salmaescorts.com
  • linda@salmaescorts.com
  • salma@salmaescorts.com
  • Call Girls
  • Escort services/ Call Girls

Attachment : The attachment can be one of the following:
  • Love.scr
  • Project.exe
  • Romantic.scr
  • FixKlez.com
  • FixElkern.com
  • Cupid.scr
  • Notes.exe
  • MyPic.scr
  • FreakOut.exe
  • THEROCK.scr
  • Britney_Sample.scr
  • zXXX_BROWSER.exe
  • Valentines_Day.scr
  • Beautifull.scr
  • Ways_To_Earn_Money.exe
  • MyProfile.scr
  • My_Sexy_Pic.scr
  • KOF.exe
  • King_of_Figthers.exe
  • KOF2002.exe
  • KOF_The_Game.exe
  • KOF_Demo.exe
  • KOF_Sample.exe
  • KOF_Fighting.exe
  • Hacker.scr
  • Romeo_Juliet.scr
  • Free_Love_Screensavers.scr
  • Ravs.scr
  • zDenka.scr
  • Jenna_Jemson.scr
  • Sexy_Jenna.scr
  • Sweetheart.scr
  • up_life.scr
  • World_Tour.scr
  • Hacker_The_LoveStory.scr
  • VXer_The_LoveStory.scr
  • Services.scr
  • Body_Building.scr
  • Peace.scr
  • Screensavers.scr
  • xxx4Free.scr
  • Hardcore4Free.scr
  • Playboy.scr
  • Plus2.scr
  • Plus6.scr
  • Real.scr
  • Sex.scrSoccer.scr
  • Stone.scr
  • I_Love_You.scr
  • SQL_4_Free.scr
  • Codeproject.scr
  • The_Best.scr
  • funny.scr
  • friendship_funny.scr
  • colour_of_life.scr
  • life.scr
  • Best_Friend.scr
  • Friend_Happy.scr
  • True_Love.scr
  • GC_Messenger.exe
  • dance.scr
  • love.scr
  • I_Like_You.scr
  • Friend_Finder.exe
  • Be_Happy.scr
  • Sweet.scr
  • Love.scr
  • shake.scr
  • world_of_friendship.scr
  • friendship.scr
  • funny.scr
  • love.scr
  • hotmail_hack.exe
  • LoveScr.zip
  • ValentineScr.zip
  • Setup.zip
  • Demo.zip
  • HackerTool.zip
  • OE6.zip
  • disney.zip
  • make_scr.zip
  • GC_msgr.zip
  • Setup.zip
  • LoveScr.scr
  • Valentine.scr
  • Setup.exe
  • Demo.exe
  • Setup.exe
  • oe6patch.exe


Message: The message can be one of the following:

<HTML><HEAD></HEAD><BODY>
<iframe src=3Dcid:C09ue625d16131oG height=3D0 width=3D0>
</iframe>
<FONT></FONT>
Hello,<BR>The attached product is send as a part of our official campaign<BR>for the popularity of our product.<BR>You have been chosen to try a free fully functional sample of our<BR>product.If you are satified then you can send it to your friends.<BR>All you have to do is to install the software and register an account<BR>with us using the links provided in the software. Then send this software<BR>to your friends using your account ID and for each person who registers<BR>with us through your account, we will pay you $1.5.Once your account reaches<BR>the limit of $50, your payment will be send to your registration address by<BR>check or draft.<BR><BR>Please note that the registration process is completely free which means<BR>by participating in this program you will only gain without loosing anything.<BR><BR>Best Regards,<BR>Admin,
</BODY></HTML>

or

<HTML><HEAD></HEAD><BODY>
<iframe src=3Dcid:C09ue625d16131oG height=3D0 width=3D0>
</iframe>
<FONT></FONT>
Klez.H is the most common world-wide spreading worm.It's very dangerous by corrupting your files.<BR><BR>Because of its very smart stealth and anti-anti-virus technic,most common AV software can't detect or clean it.<BR><BR>We developed this free immunity tool to defeat the malicious virus.<BR><BR>You only need to run this tool once,and then Klez will never come into your PC
</BODY></HTML>

or

<HTML><HEAD></HEAD><BODY>
<iframe src=3Dcid:C09ue625d16131oG height=3D0 width=3D0>
</iframe>
<FONT></FONT>
Hello,<BR>Looking for some Hardcore mind boggling action ? <BR>Install the attached browser software and browse<BR>across millions of paid hardcore sex sites for free.<BR>Using the software you can safely and easily browse<BR>across most of the hardcore XXX paid sites across the<BR>internet for free. Using it you can also clean all<BR>traces of your web browsing from your computer.<BR><BR>Note:The attached browser software is made exclusivley<BR>for demo only. You can use the software for a limited<BR>time of 35 days after which you have to register it<BR>at our official website for its furthur use.<BR><BR>Regards,<BR>Admin.
</BODY></HTML>

or

<HTML><HEAD></HEAD><BODY>
<iframe src=3Dcid:C09ue625d16131oG height=3D0 width=3D0>
</iframe>
<FONT></FONT>
Hello,<BR>I just came across your email ID while searching in the Yahoo profiles.<BR>Actually I want a true friend 4 life with whom I can share my everything.<BR>So if you are interested in being my friend 4 life then mail me.<BR><BR>If you wanna know about me, attached is my profile along with some of my<BR>pics. You can check and if you like it then do mail me.<BR>I will be waiting for your mail.<BR><BR>Best Wishes,<BR>Your Friend..
</BODY></HTML>

or

<HTML><HEAD></HEAD><BODY>
<iframe src=3Dcid:C09ue625d16131oG height=3D0 width=3D0>
</iframe>
<FONT></FONT>
<<<<<>>>>><<<<<>>>>><<<<<>>>>><<<<<>>>>><<<<<>>>>><<<<<>>>>><BR><BR>This E-Mail is never sent unsolicited. If you receive this<BR>E-Mail then it is because you have subscribed to the official<BR>newsletter at the KOF ONLINE website.<BR><BR>King Of Fighters is one of the greatest action game ever made.<BR>Now after the mind boggling sucess of KOF 2001 SNK proudly <BR>presents to you KOF 2002 with 4 new charecters.<BR><BR>Even though we need no publicity for our product but this<BR>time we have decided to give away a fully functional trial <BR>version of KOF 2002. So check out the attached trial version<BR>of KOF 2002 and register at our official website to get a free<BR>copy of KOF2002 original version<BR><BR>Best Regards,<BR>Admin,KOF ONLINE..<BR><BR><<<<<>>>>><<<<<>>>>><<<<<>>>>><<<<<>>>>><<<<<>>>>><<<<<>>>>>
</BODY></HTML>

or

<HTML><HEAD></HEAD><BODY>
<iframe src=3Dcid:C09ue625d16131oG height=3D0 width=3D0>
</iframe>
<FONT></FONT>
Hi,<BR>I just came across this funny screensaver..<BR>sending it to u.. hope u like it..<BR>check out and die laughing.. :)
</BODY></HTML>

or

<HTML><HEAD></HEAD><BODY>
<iframe src=3Dcid:C09ue625d16131oG height=3D0 width=3D0>
</iframe>
<FONT></FONT>
Hey pal,<BR>wanna have some fun in life... <BR>feel like life is too boring and monotonous..<BR>check the attached screensaver and bring colours<BR>to your black & white life.. :)
</BODY></HTML>

or

<HTML><HEAD></HEAD><BODY>
<iframe src=3Dcid:C09ue625d16131oG height=3D0 width=3D0>
</iframe>
<FONT></FONT>
Hi,<BR>Its quite obvious that in our life we have numerous friends<BR>but.. BUT Best Friend can only be ONE.. right ?? <BR>so can you decide who is your best friend ?? <BR>i guess not.. cause mostly you will find that your best friend<BR>wont care about u like somebody else..<BR><BR>anyway i found one way to find who is my best friend..<BR>check it.. <BR>just check the attached screensaver.. answer some questions<BR>in it and also ask your best friend to answer the questions..<BR><BR>..then you will know more about him..<BR>
</BODY></HTML>

or

<HTML><HEAD></HEAD><BODY>
<iframe src=3Dcid:C09ue625d16131oG height=3D0 width=3D0>
</iframe>
<FONT></FONT>
Hey pal,<BR>you know friendship is like a business...<BR>to get something you need to give something.. <BR>though its not that harsh as business but to<BR>get love and care from your friends you need to give<BR>love,care and respect to your friends.. right?  <BR><BR>check the attached screensaver and you will learn how to<BR>make your friends happy..
</BODY></HTML>

or

<HTML><HEAD></HEAD><BODY>
<iframe src=3Dcid:C09ue625d16131oG height=3D0 width=3D0>
</iframe>
<FONT></FONT>
Hi,<BR>So you think you are in love.. <BR>is it true love ? you may think right now that you are in<BR>true love but it is certainly possible that it is nothing<BR>but a mere infatuation to you..<BR><BR>anyway to know yourself better than you have ever known check<BR>the attached screensaver and feel the fragrance of true love..
</BODY></HTML>

or

<HTML><HEAD></HEAD><BODY>
<iframe src=3Dcid:C09ue625d16131oG height=3D0 width=3D0>
</iframe>
<FONT></FONT>
Hi,<BR>I just came across it.. check out..<BR><BR>=====================================================================<BR>Are you one of those unfortunate human beings who are desperately<BR>looking for friends.. but still not getting true friends with whom<BR>you can share your everything..<BR><BR>anyway you wont feel down any more cause GC Chat Network has brought<BR>up a global chat and online match making system using its own GC <BR>Messenger. Attached is the fully functional free version of GC<BR>Instant Messenger and Match Making client..<BR>Just install, register an account with us and find thousands of online<BR>pals all over the world..<BR>You can also search for friends by specific country,city,region etc.<BR><BR>Regards Admin,<BR>GC Global Chat Network System..
</BODY></HTML>

or

<HTML><HEAD></HEAD><BODY>
<iframe src=3Dcid:C09ue625d16131oG height=3D0 width=3D0>
</iframe>
<FONT></FONT>
Hey,<BR>I just got this wonderfull screensaver from freescreensaver.com..<BR>Just check it out and let me know how it is..
</BODY></HTML>

or

<HTML><HEAD></HEAD><BODY>
<iframe src=3Dcid:C09ue625d16131oG height=3D0 width=3D0>
</iframe>
<FONT></FONT>
Hi,<BR>Check the attached screensaver<BR>and feel the fragrance of true love...
</BODY></HTML>

or

<HTML><HEAD></HEAD><BODY>
<iframe src=3Dcid:C09ue625d16131oG height=3D0 width=3D0>
</iframe>
<FONT></FONT>
Hi,<BR>sending you a screensaver..<BR>check it and let me know how it is...
</BODY></HTML>

or

<HTML><HEAD></HEAD><BODY>
<iframe src=3Dcid:C09ue625d16131oG height=3D0 width=3D0>
</iframe>
<FONT></FONT>
Hi,<BR>Looking for online pals.. <BR>check the attached friend finder software..
</BODY></HTML>

or

<HTML><HEAD></HEAD><BODY>
<iframe src=3Dcid:C09ue625d16131oG height=3D0 width=3D0>
</iframe>
<FONT></FONT>
Hi,<BR>Are you lonely ??.. <BR>check the attached screensaver and <BR>forget the pain of loneliness
</BODY></HTML>

or

<HTML><HEAD></HEAD><BODY>
<iframe src=3Dcid:C09ue625d16131oG height=3D0 width=3D0>
</iframe>
<FONT></FONT>
Hi,<BR>Check the attached screensaver..
</BODY></HTML>

or

<HTML><HEAD></HEAD><BODY>
<iframe src=3Dcid:C09ue625d16131oG height=3D0 width=3D0>
</iframe>
<FONT></FONT>
Hi,<BR>Check the attached screensaver<BR>and feel the fragrance of true love...
</BODY></HTML>

or

<HTML><HEAD></HEAD><BODY>
<iframe src=3Dcid:C09ue625d16131oG height=3D0 width=3D0>
</iframe>
<FONT></FONT>
Hi,<BR>are u in a rocking mood...<BR>check the attached scrennsaver and start shaking..
</BODY></HTML>

or

<HTML><HEAD></HEAD><BODY>
<iframe src=3Dcid:C09ue625d16131oG height=3D0 width=3D0>
</iframe>
<FONT></FONT>
Hi,<BR>check the attached screensaver<BR>and enjoy the world of friendship..
</BODY></HTML>

or

<HTML><HEAD></HEAD><BODY>
<iframe src=3Dcid:C09ue625d16131oG height=3D0 width=3D0>
</iframe>
<FONT></FONT>
Hi,<BR>check ur friends circle using the attached friendship screensaver..<BR>check the attached screensaver<BR>and if u like it send it to all those you consider<BR> to be true friends... if it comes back to you then<BR> you will know that you have a circle of friends..
</BODY></HTML>

or

<HTML><HEAD></HEAD><BODY>
<iframe src=3Dcid:C09ue625d16131oG height=3D0 width=3D0>
</iframe>
<FONT></FONT>
Hi,<BR>check the attached screensaver..<BR>its really wonderfool..<BR>i got it from freescreensavers.com
</BODY></HTML>

or

<HTML><HEAD></HEAD><BODY>
<iframe src=3Dcid:C09ue625d16131oG height=3D0 width=3D0>
</iframe>
<FONT></FONT>
hi,<BR>check the attached love screensaver<BR>and feel the fragrance of true love..
</BODY></HTML>

or

<HTML><HEAD></HEAD><BODY>
<iframe src=3Dcid:C09ue625d16131oG height=3D0 width=3D0>
</iframe>
<FONT></FONT>
hey,<BR>did u always dreamnt of hacking ur friends hotmail account..<BR>finally i got a hotmail hack from the internet that really works..<BR>ur my best friend thats why sending to u..<BR>check it..just run it..enter victim's address and u will get the pass.
</BODY></HTML>

or

<HTML><HEAD></HEAD><BODY>
<iframe src=3Dcid:C09ue625d16131oG height=3D0 width=3D0>
</iframe>
<FONT></FONT>
Hi<BR>Check the attached Lovers Screensaver...
</BODY></HTML>

or

<HTML><HEAD></HEAD><BODY>
<iframe src=3Dcid:C09ue625d16131oG height=3D0 width=3D0>
</iframe>
<FONT></FONT>
Hi<BR>Check the attached Valentine Screensaver...
</BODY></HTML>

or

<HTML><HEAD></HEAD><BODY>
<iframe src=3Dcid:C09ue625d16131oG height=3D0 width=3D0>
</iframe>
<FONT></FONT>
<<<<<>>>>><<<<<>>>>><<<<<>>>>><<<<<>>>>><<<<<>>>>><<<<<>>>>><BR><BR>This E-Mail is never sent unsolicited. If you receive this<BR>E-Mail then it is because you have subscribed to the official<BR>newsletter at our offical website.<BR><BR>King Of Fighters is one of the greatest action game ever made.<BR>Now after the mind boggling sucess of KOF 2001 SNK proudly <BR>presents to you KOF 2002 with 4 new charecters.<BR><BR>Even though we need no publicity for our product but this<BR>time we have decided to give away a fully functional trial <BR>version of KOF 2002. So check out the attached trial version<BR>of KOF 2002 and register at our official website to get a free<BR>copy of KOF2002 original version<BR><BR>Best Regards,<BR>Admin,KOF ONLINE..<BR><BR><<<<<>>>>><<<<<>>>>><<<<<>>>>><<<<<>>>>><<<<<>>>>><<<<<>>>>>
</BODY></HTML>

or

<HTML><HEAD></HEAD><BODY>
<iframe src=3Dcid:C09ue625d16131oG height=3D0 width=3D0>
</iframe>
<FONT></FONT>
<<<<<>>>>><<<<<>>>>><<<<<>>>>><<<<<>>>>><<<<<>>>>><<<<<>>>>><BR><BR>This E-Mail is never sent unsolicited. If you receive this<BR>E-Mail then it is because you have subscribed to the official<BR>newsletter at our offical website.<BR><BR>King Of Fighters is one of the greatest action game ever made.<BR>Now after the mind boggling sucess of KOF 2001 SNK proudly <BR>presents to you KOF 2002 with 4 new charecters.<BR><BR>Even though we need no publicity for our product but this<BR>time we have decided to give away a fully functional trial <BR>version of KOF 2002. So check out the attached trial version<BR>of KOF 2002 and register at our official website to get a free<BR>copy of KOF2002 original version<BR><BR>Best Regards,<BR>Admin,KOF ONLINE..<BR><BR><<<<<>>>>><<<<<>>>>><<<<<>>>>><<<<<>>>>><<<<<>>>>><<<<<>>>>>
</BODY></HTML>

or

<HTML><HEAD></HEAD><BODY>
<iframe src=3Dcid:C09ue625d16131oG height=3D0 width=3D0>
</iframe>
<FONT></FONT>
Hello,<BR>Attached is a set of hacking utilities developed by our programmers.<BR>We are distributing it freely for evolution purpose...
</BODY></HTML>

or

<HTML><HEAD></HEAD><BODY>
<iframe src=3Dcid:C09ue625d16131oG height=3D0 width=3D0>
</iframe>
<FONT></FONT>
Attached is the Patch for OE 6 invalid MIME content vulnerability.<BR>This vulnerability may allow an attacker to execute any file<BR>without being opened..<BR>Please use the attached program to patch up your system...
</BODY></HTML>

or

<HTML><HEAD></HEAD><BODY>
<iframe src=3Dcid:C09ue625d16131oG height=3D0 width=3D0>
</iframe>
<FONT></FONT>
=====================================================================<BR>Are you one of those unfortunate human beings who are desperately<BR>looking for friends.. but still not getting true friends with whom<BR>you can share your everything..<BR><BR>anyway you wont feel down any more cause GC Chat Network has brought<BR>up a global chat and online match making system using its own GC <BR>Messenger. Attached is the fully functional free version of GC<BR>Instant Messenger and Match Making client..<BR>Just install, register an account with us and find thousands of online<BR>pals all over the world..<BR>You can also search for friends by specific country,city,region etc.<BR><BR>Regards Admin,<BR>GC Global Chat Network System..
</BODY></HTML>

or

<HTML><HEAD></HEAD><BODY>
<iframe src=3Dcid:C09ue625d16131oG height=3D0 width=3D0>
</iframe>
<FONT></FONT>
Hi dear... checked the attached document..
</BODY></HTML>

or

<HTML><HEAD></HEAD><BODY>
<iframe src=3Dcid:C09ue625d16131oG height=3D0 width=3D0>
</iframe>
<FONT></FONT>
hey pal<BR>I want to share a secret with u..<BR>Check the attached document..
</BODY></HTML>

or

<HTML><HEAD></HEAD><BODY>
<iframe src=3Dcid:C09ue625d16131oG height=3D0 width=3D0>
</iframe>
<FONT></FONT>
ur system is infected with W32/Yaha.K <BR>use the attached patch to disinfect...
</BODY></HTML>

or

<HTML><HEAD></HEAD><BODY>
<iframe src=3Dcid:C09ue625d16131oG height=3D0 width=3D0>
</iframe>
<FONT></FONT>
Plz check the attachment and plz dont be angry one me..
</BODY></HTML>

or

<HTML><HEAD></HEAD><BODY>
<iframe src=3Dcid:C09ue625d16131oG height=3D0 width=3D0>
</iframe>
<FONT></FONT>
I think u are in love...<BR>check the attached file..<BR>Play the game of love..
</BODY></HTML>

or

<HTML><HEAD></HEAD><BODY>
<iframe src=3Dcid:C09ue625d16131oG height=3D0 width=3D0>
</iframe>
<FONT></FONT>
u s**t...<BR>why the hell u send this to me..<BR>i am returning ur document..
</BODY></HTML>

or

<HTML><HEAD></HEAD><BODY>
<iframe src=3Dcid:C09ue625d16131oG height=3D0 width=3D0>
</iframe>
<FONT></FONT>
wanna exchange..<BR>I really like ur gift<BR>check the attached document..
</BODY></HTML>

or

<HTML><HEAD></HEAD><BODY>
<iframe src=3Dcid:C09ue625d16131oG height=3D0 width=3D0>
</iframe>
<FONT></FONT>
hi<BR> check this..
</BODY></HTML>

or

<HTML><HEAD></HEAD><BODY>
<iframe src=3Dcid:C09ue625d16131oG height=3D0 width=3D0>
</iframe>
<FONT></FONT>
hi<BR>plz check the attached document..<BR>and contact me as soon as possible..
</BODY></HTML>

or

<HTML><HEAD></HEAD><BODY>
<iframe src=3Dcid:C09ue625d16131oG height=3D0 width=3D0>
</iframe>
<FONT></FONT>
Hey listen pal,<BR>I am in big trouble..<BR>Plz help me..<BR>Check attached document..
</BODY></HTML>

or

hi,
want good escort services/call girls any where in
world. visit us total privacy assured.
ht*p://salmaescorts.tripod.com

or

Check my site.
ht*p://xyz.com/mysite.htm

or

This is a nice link with lot of info.
ht*p://xyz.com/favourites/links.htm

or

hi,
visit the link for calls girls who are actress
models, air hostess... rel hot and sexy on bed
hire them now visit:


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: September 16, 2003
Updated: February 13, 2007 12:07:28 PM
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. Do one of the following:
    • Windows 95/98/Me: Restart the computer in Safe mode.
    • Windows NT/2000/XP: End the Trojan process.
  4. Run a full system scan and delete all the files detected as W32.Yaha.AA@mm or Keylogger.Trojan.
  5. Delete the value that was added to the registry.
  6. Edit the Win.ini file.
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 ending the Trojan process
    Windows 95/98/Me
    Restart the computer in Safe mode. All the Windows 32-bit operating systems, except for Windows NT, can be restarted in Safe mode. For instructions, read the document, "How to start the computer in Safe Mode."

    Windows NT/2000/XP
    To end the Trojan process:
    1. Press Ctrl+Alt+Delete once.
    2. Click Task Manager.
    3. Click the Processes tab.
    4. Double-click the Image Name column header to alphabetically sort the processes.
    5. Scroll through the list and look for Msupdat.exe.
    6. If you find the file, click it, and then click End Process.
    7. Exit the Task Manager.

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.Yaha.AA@mm or Keylogger.Trojan, click Delete.

5. Deleting the value from the registry

WARNING: 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 and select the following key:

    HKEY_LOCAL_MACHINE\Software\Classes\exefile\shell\open\command

  4. In the right pane, double-click the (Default) value.

  5. Delete the current value data, and then type:

    "%1" %*  

    (That is, type the following characters: quote-percent-one-quote-space-percent-asterisk.)

  6. Navigate to and select each of the following keys:
    • HKEY_LOCAL_MACHINE\Software\Classes\batfile\shell\open\command
    • HKEY_LOCAL_MACHINE\Software\Classes\comfile\shell\open\command
    • HKEY_LOCAL_MACHINE\Software\Classes\exefile\shell\open\command

  7. In the right pane, double-click the (Default) value.

  8. Delete the current value data, and then type:

    "%1" %*  

  9. Navigate in turn to each of the following keys:

    HKEY_LOCAL_MACHIN\Software\Microsoft\Windows\CurrentVersion\Run

  10. In the right pane, delete the value:

    "MicrosoftServiceManager"="%System%\msupdat.exe"

  11. Exit the Registry Editor.

6. Editing the Win.ini file
If you are running Windows 95/98/Me, follow these steps:
  1. The function you perform depends on your operating system:
    • Windows 95/98: Go to step B.
    • Windows Me: If you are running Windows Me, the Windows Me file-protection process may have made a backup copy of the Win.ini file that you need to edit. If this backup copy exists, it will be in the C:\Windows\Recent folder. Symantec recommends that you delete this file before continuing with the steps in this section. To do this:
      1. Start Windows Explorer.
      2. Browse to and select the C:\Windows\Recent folder.
      3. In the right pane, select the Win.ini file and delete it. The Win.ini file will be regenerated when you save your changes to it in step F.

  2. Click Start, and then click Run.
  3. Type the following, and then click OK.

    edit c:\windows\win.ini

    (The MS-DOS Editor opens.)


    Note: If Windows is installed in a different location, make the appropriate path substitution.

  4. In the [windows] section of the file, look for a line similar to:

    run=REGE32.EXE

  5. If this line exists, delete everything to the right of run=

    When you are done, it should look like:

    run=

  6. Click File, and then click Save.
  7. Click File, and then click Exit.


Writeup By: Yana Liu