Discovered: January 26, 2006
Updated: February 13, 2007 12:50:48 PM
Also Known As: Win32/Glimbag.A [Computer Asso, TROJ_BAGLE.BU [Trend Micro], Troj/BagleDl-BJ [Sophos]
Type: Worm
Systems Affected: Windows



W32.Imav.A is a worm that spreads by sending ICQ messages that contain links to copies of the worm. The worm also disables security-related products. The worm may arrive as a .zip file downloaded from the Internet.

Note: Definitions prior to January 27th may detect this threat as W32.Lodav.A.

Antivirus Protection Dates

  • Initial Rapid Release version January 26, 2006
  • Latest Rapid Release version March 05, 2008 revision 053
  • Initial Daily Certified version January 26, 2006
  • Latest Daily Certified version March 05, 2008 revision 054
  • Initial Weekly Certified release date February 01, 2006

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

Writeup By: Jeong Mun

Discovered: January 26, 2006
Updated: February 13, 2007 12:50:48 PM
Also Known As: Win32/Glimbag.A [Computer Asso, TROJ_BAGLE.BU [Trend Micro], Troj/BagleDl-BJ [Sophos]
Type: Worm
Systems Affected: Windows


When W32.Imav.A is executed, it performs the following actions:

  1. Creates the following files:

    • %Temp%\~[RANDOM FILE NAME].exe (a copy of the worm that is 33,741 bytes in length)
    • %Temp%\~[RANDOM FILE NAME].jpg (a non-malicious image file that is 28,570 bytes in length)

      Note: %Temp% is a variable that refers to the Windows temporary folder. By default, this is C:\Windows\TEMP (Windows 95/98/Me/XP) or C:\WINNT\Temp (Windows NT/2000).

  2. Opens the image file %Temp%\~[RANDOM FILE NAME].jpg.

  3. Copies itself as the following:

    %System%\im_1.exe, 33,741 bytes

    Note: %System% is a variable that refers to the System folder. By default this is C:\Windows\System (Windows 95/98/Me), C:\Winnt\System32 (Windows NT/2000), or C:\Windows\System32 (Windows XP).

  4. Creates the following file:

    %System%\im_2.exe (17,886 bytes in length)

  5. Adds the value:

    "im_autorn" = "%System%\im_1.exe"

    to the registry subkey:

    HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Run

    so that it runs every time Windows starts.

  6. Adds the value:

    "FirstRun" = "1"

    to the registry subkey:

    HKEY_CURRENT_USER\SOFTWARE\Microsoft\IME

    as an infection marker.

  7. Disables the following services, some of which may be security-related:

    • Ahnlab task Scheduler
    • alerter
    • AlertManger
    • AntiVir Service
    • aswUpdSv
    • Ati HotKey Poller
    • avast! Antivirus
    • AVEService
    • AVExch32Service
    • avg7alrt
    • avg7updsvc
    • AvgCore
    • AvgFsh
    • AvgServ
    • AVIRAMailService
    • AVIRAService
    • avpcc
    • AVUPDService
    • AVWUpSrv
    • AvxIni
    • awhost32
    • backweb client - 4476822
    • BackWeb Client - 7681197
    • backweb client-4476822
    • bdss
    • BlackICE
    • CAISafe
    • ccEvtMgr
    • ccPwdSvc
    • ccSetMgr
    • ccSetMgr.exe
    • DefWatch
    • dvpapi
    • dvpinit
    • F-Secure Gatekeeper Handler Starter
    • fsbwsys
    • fsdfwd
    • FSMA
    • Guard NT
    • InoRpc
    • InoRT
    • InoTask
    • KAVMonitorService
    • kavsvc
    • KLBLMain
    • McAfee Firewall
    • McAfeeFramework
    • McShield
    • McTaskManager
    • mcupdmgr.exe
    • MCVSRte
    • MonSvcNT
    • navapsvc
    • Network Associates Log Service
    • nipsvc
    • NISSERV
    • NISUM
    • NOD32ControlCenter
    • NOD32Service
    • Norman NJeeves
    • Norman Type-R
    • Norman ZANDA
    • Norton Antivirus Server
    • NPFMntor
    • NProtectService
    • NSCTOP
    • nvcoas
    • NVCScheduler
    • nwclntc
    • nwclntd
    • nwclnte
    • nwclntf
    • nwclntg
    • nwclnth
    • NWService
    • Outbreak Manager
    • Outpost Firewall
    • OutpostFirewall
    • PASSRV
    • PAVFNSVR
    • Pavkre
    • PavProt
    • PavPrSrv
    • PAVSRV
    • PCCPFW
    • PersFW
    • PREVSRV
    • PSIMSVC
    • ravmon8
    • SAVFMSE
    • SAVScan
    • SBService
    • schscnt
    • SharedAccess
    • SmcService
    • SNDSrvc
    • SPBBCSvc
    • SpiderNT
    • SweepNet
    • SWEEPSRV.SYS
    • Symantec AntiVirus Client
    • Symantec Core LC
    • Tmntsrv
    • V3MonNT
    • V3MonSvc
    • Vba32ECM
    • Vba32ifs
    • Vba32Ldr
    • Vba32PP3
    • VexiraAntivirus
    • VisNetic AntiVirus Plug-in
    • vsmon
    • vsserv
    • wuauserv
    • xcomm

  8. Renames the following files, most of which are security related:

    • ashAvast.exe is renamed to 1ashAvast.exe
    • ashDisp.exe is renamed to 1ashDisp.exe
    • ashEnhcd.exe is renamed to 1ashEnhcd.exe
    • ashPopWz.exe is renamed to 1ashPopWz.exe
    • ashShA64.dll is renamed to 1ashShA64.dll
    • ashSimpl.exe is renamed to 1ashSimpl.exe
    • ashSkPck.exe is renamed to 1ashSkPck.exe
    • ashWebSv.exe is renamed to 1ashWebSv.exe
    • AUPDATE.EXE is renamed to 1AUPDATE.EXE
    • Avconsol.exe is renamed to 1Avconsol.exe
    • avgcc.exe is renamed to 1avgcc.exe
    • AVGCMSG.DLL is renamed to 1AVGCMSG.DLL
    • avgemc.exe is renamed to 1avgemc.exe
    • AVGNT.EXE is renamed to 1AVGNT.EXE
    • AVSCHED32.DLL is renamed to 1AVSCHED32.DLL
    • AVSCHED32.EXE is renamed to 1AVSCHED32.EXE
    • Avsynmgr.exe is renamed to 1Avsynmgr.exe
    • AVWUPD32.EXE is renamed to 1AVWUPD32.EXE
    • BCGCB59.dll is renamed to 1BCGCB59.dll
    • bdmcon.exe is renamed to 1bdmcon.exe
    • bdnews.exe is renamed to 1bdnews.exe
    • bdsubmit.exe is renamed to 1bdsubmit.exe
    • bdswitch.exe is renamed to 1bdswitch.exe
    • cafix.exe is renamed to 1cafix.exe
    • ccApp.exe is renamed to 1ccApp.exe
    • CCEVTMGR.EXE is renamed to 1CCEVTMGR.EXE
    • ccl30.dll is renamed to 1ccl30.dll
    • CCSETMGR.EXE is renamed to 1CCSETMGR.EXE
    • ccvrtrst.dll is renamed to 1ccvrtrst.dll
    • ClamTray.exe is renamed to 1ClamTray.exe
    • ClamWin.exe is renamed to 1ClamWin.exe
    • CMGrdian.exe is renamed to 1CMGrdian.exe
    • D2htls32.dll is renamed to 1D2htls32.dll
    • drwadins.exe is renamed to 1drwadins.exe
    • drweb32w.exe is renamed to 1drweb32w.exe
    • drwebscd.exe is renamed to 1drwebscd.exe
    • drwebupw.exe is renamed to 1drwebupw.exe
    • FFJMPWEB.DLL is renamed to 1FFJMPWEB.DLL
    • freshclam.exe is renamed to 1freshclam.exe
    • GUARDEVT.DLL is renamed to 1GUARDEVT.DLL
    • GUARDGUI.EXE is renamed to 1GUARDGUI.EXE
    • GUARDMSG.DLL is renamed to 1GUARDMSG.DLL
    • GuardNT.exe is renamed to 1GuardNT.exe
    • IksysT32.dll is renamed to 1IksysT32.dll
    • INETUPD.EXE is renamed to 1INETUPD.EXE
    • InocIT.exe is renamed to 1InocIT.exe
    • InoOEM.dll is renamed to 1InoOEM.dll
    • InoOption.dll is renamed to 1InoOption.dll
    • InoUpTNG.exe is renamed to 1InoUpTNG.exe
    • isafe.exe is renamed to 1isafe.exe
    • KAV.exe is renamed to 1KAV.exe
    • kavmm.exe is renamed to 1kavmm.exe
    • KAVPF.exe is renamed to 1KAVPF.exe
    • LUALL.EXE is renamed to 1LUALL.EXE
    • LUINSDLL.DLL is renamed to 1LUINSDLL.DLL
    • Luupdate.exe is renamed to 1Luupdate.exe
    • Mcshield.exe is renamed to 1Mcshield.exe
    • NAVAPSVC.EXE is renamed to 1NAVAPSVC.EXE
    • nod32.exe is renamed to 1nod32.exe
    • nod32api.dll is renamed to 1nod32api.dll
    • nod32kui.exe is renamed to 1nod32kui.exe
    • NPFMNTOR.EXE is renamed to 1NPFMNTOR.EXE
    • npfmsg.exe is renamed to 1npfmsg.exe
    • Nvccf0D.dll is renamed to 1Nvccf0D.dll
    • Nvcevlog.dll is renamed to 1Nvcevlog.dll
    • Nvcod.exe is renamed to 1Nvcod.exe
    • Nvcte.exe is renamed to 1Nvcte.exe
    • Nvcut.exe is renamed to 1Nvcut.exe
    • OCONNDLG.DLL is renamed to 1OCONNDLG.DLL
    • OCOOKDLG.DLL is renamed to 1OCOOKDLG.DLL
    • outpost.exe is renamed to 1outpost.exe
    • pccguide.exe is renamed to 1pccguide.exe
    • PcCtlCom.exe is renamed to 1PcCtlCom.exe
    • python23.dll is renamed to 1python23.dll
    • QHPF.EXE is renamed to 1QHPF.EXE
    • Realmon.exe is renamed to 1Realmon.exe
    • RuLaunch.exe is renamed to 1RuLaunch.exe
    • schface.dll is renamed to 1schface.dll
    • SNDSrvc.exe is renamed to S1NDSrvc.exe
    • SPBBCSvc.exe is renamed to S1PBBCSvc.exe
    • spiderml.exe is renamed to s1piderml.exe
    • symlcsvc.exe is renamed to s1ymlcsvc.exe
    • T2w32.dll is renamed to T12w32.dll
    • Tmntsrv.exe is renamed to T1mntsrv.exe
    • TmPfw.exe is renamed to Tm1Pfw.exe
    • tmproxy.exe is renamed to tm1proxy.exe
    • Up2Date.exe is renamed to U1p2Date.exe
    • upgrepl.exe is renamed to u1pgrepl.exe
    • Vba32ifs.exe is renamed to V1ba32ECM.exe
    • vba32ldr.exe is renamed to V1ba32ifs.exe
    • Vba32PP3.exe is renamed to v1ba32ldr.exe
    • vbaifps.dll is renamed to V1ba32PP3.exe
    • vetredir.dll is renamed to vb1aifps.dll
    • Vshwin32.exe is renamed to v1etredir.dll
    • VsStat.exe is renamed to Vs1hwin32.exe
    • vsvault.dll is renamed to Vs1Stat.exe
    • XT1922.dll is renamed to vs1vault.dll
    • Vba32ECM.exe is renamed to XT11922.dll
    • zatutor.exe is renamed to za1tutor.exe
    • zlavscan.dll is renamed to zla1vscan.dll
    • zlclient.exe is renamed to zl1client.exe
    • zonealarm.exe is renamed to zo1nealarm.exe

  9. Deletes the following files on all folders in all fixed drives on the compromised computer:

    • ashAvast.exe
    • ashDisp.exe
    • ashEnhcd.exe
    • ashPopWz.exe
    • ashShA64.dll
    • ashSimpl.exe
    • ashSkPck.exe
    • ashWebSv.exe
    • AUPDATE.EXE
    • Avconsol.exe
    • avgcc.exe
    • AVGCMSG.DLL
    • avgemc.exe
    • AVGNT.EXE
    • AVSCHED32.DLL
    • AVSCHED32.EXE
    • Avsynmgr.exe
    • AVWUPD32.EXE
    • BCGCB59.dll
    • bdmcon.exe
    • bdnews.exe
    • bdsubmit.exe
    • bdswitch.exe
    • cafix.exe
    • ccApp.exe
    • CCEVTMGR.EXE
    • ccl30.dll
    • CCSETMGR.EXE
    • ccvrtrst.dll
    • ClamTray.exe
    • ClamWin.exe
    • CMGrdian.exe
    • D2htls32.dll
    • drwadins.exe
    • drweb32w.exe
    • drwebscd.exe
    • drwebupw.exe
    • FFJMPWEB.DLL
    • freshclam.exe
    • GUARDEVT.DLL
    • GUARDGUI.EXE
    • GUARDMSG.DLL
    • GuardNT.exe
    • IksysT32.dll
    • INETUPD.EXE
    • InocIT.exe
    • InoOEM.dll
    • InoOption.dll
    • InoUpTNG.exe
    • isafe.exe
    • KAV.exe
    • kavmm.exe
    • KAVPF.exe
    • LUALL.EXE
    • LUINSDLL.DLL
    • Luupdate.exe
    • Mcshield.exe
    • NAVAPSVC.EXE
    • nod32.exe
    • nod32api.dll
    • nod32kui.exe
    • NPFMNTOR.EXE
    • npfmsg.exe
    • Nvccf0D.dll
    • Nvcevlog.dll
    • Nvcod.exe
    • Nvcte.exe
    • Nvcut.exe
    • OCONNDLG.DLL
    • OCOOKDLG.DLL
    • outpost.exe
    • pccguide.exe
    • PcCtlCom.exe
    • python23.dll
    • QHPF.EXE
    • Realmon.exe
    • RuLaunch.exe
    • schface.dll
    • SNDSrvc.exe
    • SPBBCSvc.exe
    • spiderml.exe
    • symlcsvc.exe
    • T2w32.dll
    • Tmntsrv.exe
    • TmPfw.exe
    • tmproxy.exe
    • Up2Date.exe
    • upgrepl.exe
    • Vba32ECM.exe
    • Vba32ifs.exe
    • vba32ldr.exe
    • Vba32PP3.exe
    • vbaifps.dll
    • vetredir.dll
    • Vshwin32.exe
    • VsStat.exe
    • vsvault.dll
    • XT1922.dll
    • zatutor.exe
    • zlavscan.dll
    • zlclient.exe
    • zonealarm.exe

  10. Lowers security settings by deleting the following registry subkeys:

    HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\McAfee.InstantUpdate.Monitor
    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Symantec NetDriver Monitor
    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ccApp
    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\NAV CfgWiz
    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SSC_UserPrompt
    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\McAfee Guardian
    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\APVXDWIN
    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\KAV50
    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\avg7_cc
    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\avg7_emc
    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Zone Labs Client
    HKEY_LOCAL_MACHINE\SOFTWARE\Symantec
    HKEY_LOCAL_MACHINE\SOFTWARE\McAfee
    HKEY_LOCAL_MACHINE\SOFTWARE\KasperskyLab
    HKEY_LOCAL_MACHINE\SOFTWARE\Agnitum
    HKEY_LOCAL_MACHINE\SOFTWARE\Panda Software
    HKEY_LOCAL_MACHINE\SOFTWARE\Zone Labs
    HKEY_LOCAL_MACHINE\SOFTWARE\Trend Micro

  11. Applies a filter to each IP adapter interface to block the access to the following Web sites, some of which are security-related:

    • ad.doubleclick.net
    • upgrade.bitdefender.com
    • report.bitdefender.com
    • ad.fastclick.net
    • ads.fastclick.net
    • ar.atwola.com
    • atdmt.com
    • avp.ch
    • avp.com
    • avp.ru
    • awaps.net
    • banner.fastclick.net
    • banners.fastclick.net
    • ca.com
    • www.ca.com
    • click.atdmt.com
    • clicks.atdmt.com
    • customer.symantec.com
    • dispatch.mcafee.com
    • download.mcafee.com
    • download.microsoft.com
    • downloads-eu1.kaspersky-labs.com
    • downloads-us1.kaspersky-labs.com
    • downloads-us2.kaspersky-labs.com
    • downloads-us3.kaspersky-labs.com
    • downloads.microsoft.com
    • downloads1.kaspersky-labs.com
    • downloads2.kaspersky-labs.com
    • downloads3.kaspersky-labs.com
    • downloads4.kaspersky-labs.com
    • engine.awaps.net
    • f-secure.com
    • fastclick.net
    • ftp.avp.ch
    • ftp.downloads2.kaspersky-labs.com
    • ftp.f-secure.com
    • ftp.kasperskylab.ru
    • ftp.sophos.com
    • go.microsoft.com
    • ids.kaspersky-labs.com
    • kaspersky-labs.com
    • kaspersky.com
    • liveupdate.symantec.com
    • liveupdate.symantecliveupdate.com
    • mast.mcafee.com
    • mcafee.com
    • media.fastclick.net
    • msdn.microsoft.com
    • my-etrust.com
    • nai.com
    • networkassociates.com
    • office.microsoft.com
    • phx.corporate-ir.net
    • rads.mcafee.com
    • secure.nai.com
    • securityresponse.symantec.com
    • service1.symantec.com
    • sophos.com
    • spd.atdmt.com
    • support.microsoft.com
    • symantec.com
    • trendmicro.com
    • update.symantec.com
    • updates.symantec.com
    • updates1.kaspersky-labs.com
    • updates2.kaspersky-labs.com
    • updates3.kaspersky-labs.com
    • updates4.kaspersky-labs.com
    • updates5.kaspersky-labs.com
    • us.mcafee.com
    • vil.nai.com
    • viruslist.com
    • viruslist.ru
    • windowsupdate.microsoft.com
    • www.avp.ch
    • www.avp.com
    • www.avp.ru
    • www.ca.com
    • www.f-secure.com
    • www.fastclick.net
    • www.grisoft.com
    • www.kaspersky-labs.com
    • www.kaspersky.com
    • www.kaspersky.ru
    • www.mcafee.com
    • www.my-etrust.com
    • www.nai.com
    • www.networkassociates.com
    • www.sophos.com
    • www.symantec.com
    • www.trendmicro.com
    • www.viruslist.com
    • www.viruslist.ru
    • www3.ca.com
    • avp.ch
    • avp.com
    • avp.ru
    • awaps.net
    • ca.com
    • ca.com
    • ca.com
    • ca.com
    • ca.com
    • ca.com
    • f-secure.com
    • fastclick.net
    • grisoft.com
    • kaspersky-labs.com
    • kaspersky.com
    • kaspersky.ru
    • mcafee.com
    • my-etrust.com
    • nai.com
    • networkassociates.com
    • sophos.com
    • symantec.com
    • trendmicro.com
    • viruslist.com
    • viruslist.ru
    • www3.ca.com
    • 84.53.142.6
    • 84.53.142.22
    • 63.210.193.12
    • 212.113.20.69
    • 216.200.68.152
    • update.symantec.com
    • ca.com
    • service1.symantec.com
    • www.antivir.de
    • antivir.de
    • drweb.com
    • ca.com
    • www.drweb.com
    • drweb.ru
    • www.ravantivirus.com
    • ravantivirus.com
    • bitdefender.com
    • www.bitdefender.com
    • ca.com
    • clamav.net
    • pandasoftware.com
    • www.pandasoftware.com
    • ftpav.ca.com
    • upgrade.bitdefender.com
    • www.bitdefender.ru
    • bitdefender.ru
    • open.by
    • vba32.de
    • www.open.by
    • sm12.avast.com
    • sm13.avast.com
    • rs18.avast.com
    • rs08.avast.com
    • sm17.avast.com
    • sm04.avast.com
    • sm09.avast.com
    • sm16.avast.com
    • rs03.avast.com
    • rs06.avast.com
    • sm21.avast.com
    • rs02.avast.com
    • rs10.avast.com
    • rs07.avast.com
    • sm25.avast.com
    • rs11.avast.com
    • sm22.avast.com
    • rs20.avast.com
    • sm23.avast.com
    • sm19.avast.com
    • sm05.avast.com
    • rs24.avast.com
    • sm15.avast.com
    • downloadhosting.core.ignum.cz
    • sm01.avast.com
    • sm14.avast.com
    • rs18.avast.com
    • download25.avast.com
    • www.avast.com
    • avast.com
    • avira.com
    • www.avira.com
    • zak.avira.com
    • downloads.avira.com
    • www.clamwin.com
    • clamwin.com
    • 213.219.245.4
    • files.referats.net
    • database.clamav.net
    • 213.248.60.121
    • gin.ba.euroweb.sk
    • www2.eset.com
    • esetsoftware.com
    • msk4.drweb.com
    • drweb.com
    • www.drweb.com
    • 62.146.66.181
    • www.hbedv.com
    • hbedv.com
    • www.hacksoft.com.pe
    • ikarus-software.at
    • download.ikarus.at
    • 193.69.114.12
    • niutwo.norman.no
    • www.anti-virus.by
    • anti-virus.by
    • www.vba32.de
    • ftpav.ca.com

      Note: This threat does not overwrite the hosts file to block access to the above Web sites.

  12. Downloads one of the following files as %Windir%\__dwn.exe and runs it:

    • [http://]www.cnsrvr.com/[REMOVED]/ddd.jpg
    • [http://]www.casinofunnights.com/[REMOVED]/ddd.jpg
    • [http://]www.ec.cox-wacotrib.com/[REMOVED]/ddd.jpg
    • [http://]www.crazyiron.ru/[REMOVED]/ddd.jpg
    • [http://]www.uni-esma.de/[REMOVED]/ddd.jpg
    • [http://]www.sorisem.net/[REMOVED]/ddd.jpg
    • [http://]www.varc.lv/[REMOVED]/ddd.jpg
    • [http://]www.belwue.de/[REMOVED]/ddd.jpg
    • [http://]www.thetildegroup.com/[REMOVED]/ddd.jpg
    • [http://]www.vybercz.cz/[REMOVED]/ddd.jpg
    • [http://]www.kyno.cz/[REMOVED]/ddd.jpg
    • [http://]www.forumgestionvilles.com/[REMOVED]/ddd.jpg
    • [http://]www.campus-and-more.com/[REMOVED]/ddd.jpg
    • [http://]www.capitalforex.com/[REMOVED]/ddd.jpg
    • [http://]www.capitalspreadspromo.com/[REMOVED]/ddd.jpg
    • [http://]www.prineus.de/[REMOVED]/ddd.jpg
    • [http://]www.databoots.de/[REMOVED]/ddd.jpg
    • [http://]www.steintrade.net/[REMOVED]/ddd.jpg
    • [http://]www.njzt.net/[REMOVED]/ddd.jpg
    • [http://]www.emarrynet.com/[REMOVED]/ddd.jpg
    • [http://]www.zebrachina.net/[REMOVED]/ddd.jpg
    • [http://]www.lxlight.com/[REMOVED]/ddd.jpg
    • [http://]www.yili-lighting.com/[REMOVED]/ddd.jpg
    • [http://]www.fachman.com/[REMOVED]/ddd.jpg
    • [http://]www.q-serwer.net/[REMOVED]/ddd.jpg
    • [http://]www.wellness-i.com/[REMOVED]/ddd.jpg
    • [http://]www.newportsystemsusa.com/[REMOVED]/ddd.jpg
    • [http://]www.westcoastcadd.com/[REMOVED]/ddd.jpg
    • [http://]www.wing49.cz/[REMOVED]/ddd.jpg
    • [http://]www.posteffects.com/[REMOVED]/ddd.jpg
    • [http://]www.provax.sk/[REMOVED]/ddd.jpg
    • [http://]www.casinobrillen.de/[REMOVED]/ddd.jpg
    • [http://]www.duodaydream.nl/[REMOVED]/ddd.jpg
    • [http://]www.finlaw.ru/[REMOVED]/ddd.jpg
    • [http://]www.fitdina.com/[REMOVED]/ddd.jpg
    • [http://]www.flashcardplayer.com/[REMOVED]/ddd.jpg
    • [http://]www.flox-avant.ru/[REMOVED]/ddd.jpg
    • [http://]www.lotslink.com/[REMOVED]/ddd.jpg
    • [http://]www.algor.com/[REMOVED]/ddd.jpg
    • [http://]www.gaspekas.com/[REMOVED]/ddd.jpg
    • [http://]www.ezybidz.com/[REMOVED]/ddd.jpg
    • [http://]www.genesisfinancialonline.com/[REMOVED]/ddd.jpg
    • [http://]www.georg-kuenzle.ch/[REMOVED]/ddd.jpg
    • [http://]www.girardelli.com/[REMOVED]/ddd.jpg
    • [http://]www.rodoslovia.ru/[REMOVED]/ddd.jpg
    • [http://]www.golden-gross.ru/[REMOVED]/ddd.jpg
    • [http://]www.gregoryolson.com/[REMOVED]/ddd.jpg
    • [http://]www.gtechna.com/[REMOVED]/ddd.jpg
    • [http://]www.lunardi.com/[REMOVED]/ddd.jpg
    • [http://]www.sgmisburg.de/[REMOVED]/ddd.jpg
    • [http://]www.harmony-farms.net/[REMOVED]/ddd.jpg
    • [http://]www.hftmusic.com/[REMOVED]/ddd.jpg
    • [http://]www.hiwmreport.com/[REMOVED]/ddd.jpg
    • [http://]www.horizonimagingllc.com/[REMOVED]/ddd.jpg
    • [http://]www.hotelbus.de/[REMOVED]/ddd.jpg
    • [http://]www.howiwinmoney.com/[REMOVED]/ddd.jpg
    • [http://]www.ietcn.com/[REMOVED]/ddd.jpg
    • [http://]www.import-world.com/[REMOVED]/ddd.jpg
    • [http://]www.houstonzoo.org/[REMOVED]/ddd.jpg
    • [http://]www.interorient.ru/[REMOVED]/ddd.jpg
    • [http://]www.internalcardreaders.com/[REMOVED]/ddd.jpg
    • [http://]www.interstrom.ru/[REMOVED]/ddd.jpg
    • [http://]www.iutoledo.org/[REMOVED]/ddd.jpg
    • [http://]www.wena.net/[REMOVED]/ddd.jpg
    • [http://]www.iesgrantarajal.org/[REMOVED]/ddd.jpg
    • [http://]www.alexandriaradiology.com/[REMOVED]/ddd.jpg
    • [http://]www.booksbyhunter.com/[REMOVED]/ddd.jpg
    • [http://]www.wxcsxy.com/[REMOVED]/ddd.jpg
    • [http://]www.coupdepinceau.com/[REMOVED]/ddd.jpg
    • [http://]www.erotologist.com/[REMOVED]/ddd.jpg
    • [http://]www.jackstitt.com/[REMOVED]/ddd.jpg
    • [http://]www.imspress.com/[REMOVED]/ddd.jpg
    • [http://]www.digitalefoto.net/[REMOVED]/ddd.jpg
    • [http://]www.josemarimuro.com/[REMOVED]/ddd.jpg
    • [http://]www.eversetic.com/[REMOVED]/ddd.jpg
    • [http://]www.curious.be/[REMOVED]/ddd.jpg
    • [http://]www.kameo-bijux.ru/[REMOVED]/ddd.jpg
    • [http://]www.karrad6000.ru/[REMOVED]/ddd.jpg
    • [http://]www.kaztransformator.kz/[REMOVED]/ddd.jpg
    • [http://]www.keywordthief.com/[REMOVED]/ddd.jpg

  13. Downloads one of the following files as %Windir%\__dwn_sp.exe:

    • [http://]www.cnsrvr.com/[REMOVED]/my_foto.zip
    • [http://]www.casinofunnights.com/[REMOVED]/my_foto.zip
    • [http://]www.ec.cox-wacotrib.com/[REMOVED]/my_foto.zip
    • [http://]www.crazyiron.ru/[REMOVED]/my_foto.zip
    • [http://]www.uni-esma.de/[REMOVED]/my_foto.zip
    • [http://]www.sorisem.net/[REMOVED]/my_foto.zip
    • [http://]www.varc.lv/[REMOVED]/my_foto.zip
    • [http://]www.belwue.de/[REMOVED]/my_foto.zip
    • [http://]www.thetildegroup.com/[REMOVED]/my_foto.zip
    • [http://]www.vybercz.cz/[REMOVED]/my_foto.zip
    • [http://]www.kyno.cz/[REMOVED]/my_foto.zip
    • [http://]www.forumgestionvilles.com/[REMOVED]/my_foto.zip
    • [http://]www.campus-and-more.com/[REMOVED]/my_foto.zip
    • [http://]www.capitalforex.com/[REMOVED]/my_foto.zip
    • [http://]www.capitalspreadspromo.com/[REMOVED]/my_foto.zip
    • [http://]www.prineus.de/[REMOVED]/my_foto.zip
    • [http://]www.databoots.de/[REMOVED]/my_foto.zip
    • [http://]www.steintrade.net/[REMOVED]/my_foto.zip
    • [http://]www.njzt.net/[REMOVED]/my_foto.zip
    • [http://]www.emarrynet.com/[REMOVED]/my_foto.zip
    • [http://]www.zebrachina.net/[REMOVED]/my_foto.zip
    • [http://]www.lxlight.com/[REMOVED]/my_foto.zip
    • [http://]www.yili-lighting.com/[REMOVED]/my_foto.zip
    • [http://]www.fachman.com/[REMOVED]/my_foto.zip
    • [http://]www.q-serwer.net/[REMOVED]/my_foto.zip
    • [http://]www.wellness-i.com/[REMOVED]/my_foto.zip
    • [http://]www.newportsystemsusa.com/[REMOVED]/my_foto.zip
    • [http://]www.westcoastcadd.com/[REMOVED]/my_foto.zip
    • [http://]www.wing49.cz/[REMOVED]/my_foto.zip
    • [http://]www.posteffects.com/[REMOVED]/my_foto.zip
    • [http://]www.provax.sk/[REMOVED]/my_foto.zip
    • [http://]www.casinobrillen.de/[REMOVED]/my_foto.zip
    • [http://]www.duodaydream.nl/[REMOVED]/my_foto.zip
    • [http://]www.finlaw.ru/[REMOVED]/my_foto.zip
    • [http://]www.fitdina.com/[REMOVED]/my_foto.zip
    • [http://]www.flashcardplayer.com/[REMOVED]/my_foto.zip
    • [http://]www.flox-avant.ru/[REMOVED]/my_foto.zip
    • [http://]www.lotslink.com/[REMOVED]/my_foto.zip
    • [http://]www.algor.com/[REMOVED]/my_foto.zip
    • [http://]www.gaspekas.com/[REMOVED]/my_foto.zip
    • [http://]www.ezybidz.com/[REMOVED]/my_foto.zip
    • [http://]www.genesisfinancialonline.com/[REMOVED]/my_foto.zip
    • [http://]www.georg-kuenzle.ch/[REMOVED]/my_foto.zip
    • [http://]www.girardelli.com/[REMOVED]/my_foto.zip
    • [http://]www.rodoslovia.ru/[REMOVED]/my_foto.zip
    • [http://]www.golden-gross.ru/[REMOVED]/my_foto.zip
    • [http://]www.gregoryolson.com/[REMOVED]/my_foto.zip
    • [http://]www.gtechna.com/[REMOVED]/my_foto.zip
    • [http://]www.lunardi.com/[REMOVED]/my_foto.zip
    • [http://]www.sgmisburg.de/[REMOVED]/my_foto.zip
    • [http://]www.harmony-farms.net/[REMOVED]/my_foto.zip
    • [http://]www.hftmusic.com/[REMOVED]/my_foto.zip
    • [http://]www.hiwmreport.com/[REMOVED]/my_foto.zip
    • [http://]www.horizonimagingllc.com/[REMOVED]/my_foto.zip
    • [http://]www.hotelbus.de/[REMOVED]/my_foto.zip
    • [http://]www.howiwinmoney.com/[REMOVED]/my_foto.zip
    • [http://]www.ietcn.com/[REMOVED]/my_foto.zip
    • [http://]www.import-world.com/[REMOVED]/my_foto.zip
    • [http://]www.houstonzoo.org/[REMOVED]/my_foto.zip
    • [http://]www.interorient.ru/[REMOVED]/my_foto.zip
    • [http://]www.internalcardreaders.com/[REMOVED]/my_foto.zip
    • [http://]www.interstrom.ru/[REMOVED]/my_foto.zip
    • [http://]www.iutoledo.org/[REMOVED]/my_foto.zip
    • [http://]www.wena.net/[REMOVED]/my_foto.zip
    • [http://]www.iesgrantarajal.org/[REMOVED]/my_foto.zip
    • [http://]www.alexandriaradiology.com/[REMOVED]/my_foto.zip
    • [http://]www.booksbyhunter.com/[REMOVED]/my_foto.zip
    • [http://]www.wxcsxy.com/[REMOVED]/my_foto.zip
    • [http://]www.coupdepinceau.com/[REMOVED]/my_foto.zip
    • [http://]www.erotologist.com/[REMOVED]/my_foto.zip
    • [http://]www.jackstitt.com/[REMOVED]/my_foto.zip
    • [http://]www.imspress.com/[REMOVED]/my_foto.zip
    • [http://]www.digitalefoto.net/[REMOVED]/my_foto.zip
    • [http://]www.josemarimuro.com/[REMOVED]/my_foto.zip
    • [http://]www.eversetic.com/[REMOVED]/my_foto.zip
    • [http://]www.curious.be/[REMOVED]/my_foto.zip
    • [http://]www.kameo-bijux.ru/[REMOVED]/my_foto.zip
    • [http://]www.karrad6000.ru/[REMOVED]/my_foto.zip
    • [http://]www.kaztransformator.kz/[REMOVED]/my_foto.zip
    • [http://]www.keywordthief.com/[REMOVED]/my_foto.zip

      Note: The downloaded file %Windir%\__dwn_sp.exe is a .zip file that contains the worm dropper.

  14. Establishes connection to login.icq.com on TCP port 17940 and sends out ICQ messages containing the text "my foto" and one of the above links to a copy of the worm. For example, if the worm successfully downloaded from [http://]www.keywordthief.com/[REMOVED]/my_foto.zip, it sends that link through ICQ Messenger.



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: Jeong Mun

Discovered: January 26, 2006
Updated: February 13, 2007 12:50:48 PM
Also Known As: Win32/Glimbag.A [Computer Asso, TROJ_BAGLE.BU [Trend Micro], Troj/BagleDl-BJ [Sophos]
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. Reinstall your Symantec antivirus program.
  3. Update the virus definitions.
  4. Run a full system scan and delete all the files detected.
  5. Delete any values added to the registry.
For specific details on each of these steps, read the following instructions.

1. To disable System Restore (Windows Me/XP)
If you are running Windows Me or Windows XP, we recommend that you temporarily turn off System Restore. Windows Me/XP uses this feature, which is enabled by default, to restore the files on your computer in case they become damaged. If a virus, worm, or Trojan infects a computer, System Restore may back up the virus, worm, or Trojan on the computer.

Windows prevents outside programs, including antivirus programs, from modifying System Restore. Therefore, antivirus programs or tools cannot remove threats in the System Restore folder. As a result, System Restore has the potential of restoring an infected file on your computer, even after you have cleaned the infected files from all the other locations.

Also, a virus scan may detect a threat in the System Restore folder even though you have removed the threat.

For instructions on how to turn off System Restore, read your Windows documentation, or one of the following articles:
Note:
When you are completely finished with the removal procedure and are satisfied that the threat has been removed, reenable System Restore by following the instructions in the aforementioned documents.

For additional information, and an alternative to disabling Windows Me System Restore, see the Microsoft Knowledge Base article: Antivirus Tools Cannot Clean Infected Files in the _Restore Folder (Article ID: Q263455).

2. To reinstall your Symantec antivirus program
As this risk attempts to remove the files and registry subkeys that your Symantec antivirus program uses, you may need to reinstall the program. If your Symantec antivirus program is not working properly, uninstall, and then reinstall it.

3. To update the virus definitions
Symantec Security Response fully tests all the virus definitions for quality assurance before they are posted to our servers. There are two ways to obtain the most recent virus definitions:
  • Running LiveUpdate, which is the easiest way to obtain virus definitions:
    • If you use Norton AntiVirus 2006, Symantec AntiVirus Corporate Edition 10.0, or newer products, LiveUpdate definitions are updated daily. These products include newer technology.
    • If you use Norton AntiVirus 2005, Symantec AntiVirus Corporate Edition 9.0, or earlier products, LiveUpdate definitions are updated weekly. The exception is major outbreaks, when definitions are updated more often.
  • Downloading the definitions using the Intelligent Updater: The Intelligent Updater virus definitions are posted daily. You should download the definitions from the Symantec Security Response Web site and manually install them. To determine whether definitions for this threat are available by the Intelligent Updater, refer to Virus Definitions (Intelligent Updater).

    The latest Intelligent Updater virus definitions can be obtained here: Intelligent Updater virus definitions. For detailed instructions read the document: How to update virus definition files using the Intelligent Updater.

4. To scan for and delete the infected files
  1. Start your Symantec antivirus program and make sure that it is configured to scan all the files.
  2. Run a full system scan.
  3. If any files are detected, click Delete.

Important: If you are unable to start your Symantec antivirus product or the product reports that it cannot delete a detected file, you may need to stop the risk from running in order to remove it. To do this, run the scan in Safe mode. For instructions, read the document, How to start the computer in Safe Mode . Once you have restarted in Safe mode, run the scan again.

After the files are deleted, restart the computer in Normal mode and proceed with the next section.

Warning messages may be displayed when the computer is restarted, since the threat may not be fully removed at this point. You can ignore these messages and click OK. These messages will not appear when the computer is restarted after the removal instructions have been fully completed. The messages displayed may be similar to the following:

Title: [FILE PATH]
Message body: Windows cannot find [FILE NAME]. Make sure you typed the name correctly, and then try again. To search for a file, click the Start button, and then click Search.


5. To delete the value from the registry
Important: Symantec strongly recommends that you back up the registry before making any changes to it. Incorrect changes to the registry can result in permanent data loss or corrupted files. Modify the specified subkeys only. For instructions refer to the document: How to make a backup of the Windows registry.
  1. Click Start > Run.
  2. Type regedit
  3. Click OK.

    Note: If the registry editor fails to open the threat may have modified the registry to prevent access to the registry editor. Security Response has developed a tool to resolve this problem. Download and run this tool, and then continue with the removal.

  4. Navigate to the subkey:

    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run

  5. In the right pane, delete the value:

    "im_autorn" = "%System%\im_1.exe"

  6. Navigate to the subkey:

    HKEY_CURRENT_USER\SOFTWARE\Microsoft\IME

  7. In the right pane, delete the value:

    "FirstRun" = "1"

  8. Exit the Registry Editor.




Writeup By: Jeong Mun