W32.Yaha.AB@mm

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Discovered: September 17, 2003
Updated: February 13, 2007 12:07:24 PM
Also Known As: I-Worm.Lentin.q[KAV], W32/Lentin.S@mm[F-Prot]
Type: Worm
Systems Affected: Windows 2000, Windows 95, Windows 98, Windows Me, Windows NT, Windows Server 2003, Windows XP


W32.Yaha.AB@mm:

  • Is a worm that is a variant of W32.Yaha.T@mm.
  • 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, which may be triggered if the system timezone is GMT+5.
  • Performs a Denial of Service (DoS) attack to some specified hosts 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 C++ language and is compressed with FSG.

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: Robert X Wang

Discovered: September 17, 2003
Updated: February 13, 2007 12:07:24 PM
Also Known As: I-Worm.Lentin.q[KAV], W32/Lentin.S@mm[F-Prot]
Type: Worm
Systems Affected: Windows 2000, Windows 95, Windows 98, Windows Me, Windows NT, Windows Server 2003, Windows XP


When W32.Yaha.AB@mm is executed, it performs the following actions:

  1. Copies itself as the following files and sets the file attributes to Hidden:
    • %System%\EXPLORERE.EXE
    • %System%\EXELD32.EXE


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

  2. May copy itself to the %Windows% 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. Set the (default) of the registry key:

    HKEY_CLASSES_ROOT\exefile\shell\open\command

    to:

    "%System%\EXELD32.EXE""%1"%*

  4. Adds the value:

    "MicrosoftServiceManager"="%System%\EXPLORERE.EXE"

    to the following registry keys:

    HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run
    HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\RunServices

  5. Enumerates the active processes, and if the name of the process contains any of the following strings, the worm will attempt to terminate that 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

  6. Enumerates the active windows, and if the name of the window contains any of the following strings, the worm will attempt to terminate the process:
    • Windows Task Manager
    • System Configuration Utility
    • Registry Editor
    • Process Viewer

  7. 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

  8. Deletes the values:

    WinServices
    syshelp
    WinGate initialize
    Module Call initialize
    WindowsMGM

    From the registry key:

    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run

  9. Deletes the value: WinServices

    From the registry key:

    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\RunServices

  10. Deletes the value: WindowsMGM

    From the registry key:

    HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Run

  11. 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>

  12. Scans all the fixed/remote disks and all the shared folders and attempts to do the following:
    • Copy itself as "REGE32.EXE" to the following folders
      • \WINDOWS
      • \WIN98
      • \WIN95
      • \WINNT
      • \WIN
      • \WINME
      • \WINXP

        And 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\MSRegScanner.exe"

  13. Inserts the following files:
    • %Cookies%\anyuser@yahoo.com.txt malicous keylogger, detected as Keylogger.Trojan
    • %Cookies%\cookie.dat data file, please delete manually
    • %System%\TASKMGR32.DLL data file, please delete manually


      Note: %Cookies% is a variable. The worm locates the Cookies folder and inserts Keylogger.Trojan to that location.

  14. Installs a keyboard hook and emails the log to "keylogs20003@yahoo.com."

  15. Performs a DoS attack to some specifed hosts and random hosts on ports 80, 135, 139, and 445.

  16. If the timezone is GMT+5, a destructive may be triggered, it may overwrite the hard disk.

Email Routine Details
The worm 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. It attempts to use the default SMTP server of the infected computer to send mail. If the worm cannot find this information, then it will use one of the many SMTP server addresses, which 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 shit
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 shit...<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.
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or

Check my site.
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This is a nice link with lot of info.
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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: Robert X Wang

Discovered: September 17, 2003
Updated: February 13, 2007 12:07:24 PM
Also Known As: I-Worm.Lentin.q[KAV], W32/Lentin.S@mm[F-Prot]
Type: Worm
Systems Affected: Windows 2000, Windows 95, Windows 98, Windows Me, Windows NT, Windows Server 2003, Windows XP



NOTE: If the worm has not run, and your Symantec antivirus product detects W32.Yaha.AB@mm either in an email message or when the worm attempts to run, delete it.

If the worm has run, do the following:

  1. Download the updated virus definitions using the Intelligent Updater, but do not install them.
  2. Restart the computer in Safe mode.
  3. Copy the Regedit.exe file to Regedit.com.
  4. Edit the registry and reverse the changes that the worm made.
  5. Restart the computer in Normal mode.
  6. Start your Symantec antivirus software. If it does not properly start or function, re-install it.
  7. Install the Intelligent Updater virus definitions that you downloaded earlier.
  8. Run a full system scan and delete the files that are detected as W32.Yaha.AB@mm and Keylogger.Trojan.

1. Downloading the updated virus definitions
2. Restarting the computer in Safe mode
    1. Do not skip this step: Shut down the computer and turn off the power. Wait 30 seconds.
    2. You can start all the Windows 32-bit operating systems, except for Windows NT, in Safe mode. For instructions, read the document, "How to start the computer in Safe mode."

3. Copying Regedit.exe to Regedit.com
    Because the worm modified the registry so that you cannot run the .exe files, first make a copy of the Registry Editor as a file with the .com extension, and then run the file.
    1. Do one of the following, depending on which operating system you are running:
      • Windows 95/98 users: Click Start, point to Programs, and then click MS-DOS Prompt. This opens a DOS window at the C:\Windows prompt. Proceed to step B of this section.
      • Windows Me users: Click Start, point to Programs, point to Accessories, and then click MS-DOS Prompt. This opens a DOS window at the C:\Windows prompt. Proceed to step B of this section.
      • Windows NT/2000 users:
        1. Click Start, and then click Run.
        2. Type the following:

          command

          and then press Enter. (A DOS window opens.)

        3. Type the following:

          cd \winnt

          and then press Enter.

        4. Proceed to step B of this section.

      • Windows XP:
        1. Click Start, and then click Run.
        2. Type the following:

          command

          and then press Enter. (A DOS window opens.)

        3. Type the following lines, pressing Enter after typing each one:

          cd\
          cd \windows

        4. Proceed to step B of this section.

    2. Type the following:

      copy regedit.exe regedit.com

      and then press Enter.

    3. Type the following:

      start regedit.com

      and then press Enter.

      The Registry Editor opens in front of the DOS window. After you finish editing the registry, exit the Registry Editor, and then exit the DOS window.

    4. Proceed to the next section, "Editing the registry and reversing the changes," only after you have completed the previous steps.


4. Editing the registry and reversing the changes

    CAUTION: Symantec strongly recommends that you back up the registry before making any changes to it. Incorrect changes to the registry can result in permanent data loss or corrupted files. Modify the specified keys only. Read the document, "How to make a backup of the Windows registry," for instructions.
    1. Navigate to and select the following key:

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

      CAUTION: The HKEY_LOCAL_MACHINE\Software\Classes key contains many subkey entries that refer to other file extensions. One of these file extensions is .exe. Changing this extension can prevent any files ending with a .exe extension from running. Make sure that you browse all the way along this path until you reach the \command subkey.

      Modify the HKEY_LOCAL_MACHINE\Software\Classes\exefile\shell\open\command subkey shown below:

      <<=== NOTE: Modify this key.

    2. In the right pane, double-click the (Default) value.
    3. Delete the current value data, and then type: "%1" %* (That is, type the following characters: quote-percent-one-quote-space-percent-asterisk.)

      NOTES:
      • On Windows 95/98/Me and Windows NT systems, the Registry Editor automatically encloses the value within quotation marks. When you click OK, the (Default) value should look exactly like this:

        ""%1" %*"  
      • On Windows 2000/XP systems, the additional quotation marks will not appear. When you click OK, the (Default) value should look exactly like this:

        "%1" %*
      • Make sure that you completely delete all the value data in the command key before typing the correct data. If you leave a space at the beginning of the entry, any attempt to run the program files will result in the error message, "Windows cannot find .exe." If you see this error message, start over from the beginning of this document and make sure that you completely remove the current value data.

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

      HKEY_LOCAL_MACHIN\Software\Microsoft\Windows\CurrentVersion\Run
      HKEY_LOCAL_MACHIN\Software\Microsoft\Windows\CurrentVersion\RunServices

      NOTE: The RunServices key may not exist on all the systems.

    5. In the right pane, delete the value:

      "MicrosoftServiceManager"="%System%\EXPLORERE.EXE"

    6. Exit the Registry Editor.

5. Restarting the computer in Normal mode
    Shut down the computer and wait 30 seconds. Restart the computer as you normally would, allowing it to go into Normal mode.

6. Starting your Symantec antivirus software
    Start your Symantec antivirus program either from the shortcut icon on your Windows desktop or from the Start menu. If it does not start, or if you have any problems when running the scan in step 8, re-install the software from your installation files or CD.

7. Installing the Intelligent Updater virus definitions
    Double-click the file that you downloaded in Step 1. Click Yes or OK if prompted.

8. Scanning for and deleting the infected files

Writeup By: Robert X Wang