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Trojan.StartPage.44317

Added to the Dr.Web virus database: 2012-05-16

Virus description added:

Technical Information

To ensure autorun and distribution:
Modifies the following registry keys:
  • [<HKLM>\SOFTWARE\Classes\.exe] '' = 'exefile'
  • [<HKLM>\SOFTWARE\Classes\exefile\shell\open\command] '' = '"%1" %*'
  • [<HKLM>\SOFTWARE\Classes\dunfile\shell\open\command] '' = ''
  • [<HKLM>\SOFTWARE\Microsoft\Command Processor] 'AutoRun' = ''
  • [<HKLM>\SOFTWARE\Classes\telnet\shell\open\command] '' = 'rundll32.exe url.dll,TelnetProtocolHandler %l'
  • [<HKLM>\SOFTWARE\Classes\regedit\shell\open\command] '' = 'regedit.exe %1'
  • [<HKLM>\SOFTWARE\Classes\batfile\shell\open\command] '' = '"%1" %*'
  • [<HKLM>\SOFTWARE\Classes\crexefile\shell\open\command] '' = '"%1" %*'
  • [<HKLM>\SOFTWARE\Classes\regfile\shell\open\command] '' = 'regedit.exe "%1"'
  • [<HKLM>\SOFTWARE\Classes\comfile\shell\open\command] '' = '"%1" %*'
  • [<HKLM>\SOFTWARE\Classes\cmdfile\shell\open\command] '' = '"%1" %*'
Creates the following services:
  • [<HKLM>\SYSTEM\ControlSet001\Services\winmgmt] 'Start' = '00000002'
  • [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess] 'Start' = '00000002'
  • [<HKLM>\SYSTEM\ControlSet001\Services\wuauserv] 'Start' = '00000002'
  • [<HKLM>\SYSTEM\ControlSet001\Services\wscsvc] 'Start' = '00000002'
Malicious functions:
To complicate detection of its presence in the operating system,
forces the system hide from view:
  • hidden files
blocks the following features:
  • System Restore (SR)
Creates and executes the following:
  • C:\ComboFix\sed.cfexe "/ TEMPLATES\t.*\t/I!d;s///" shellfolders.cfu
  • C:\ComboFix\sed.cfexe "/ PERSONAL\t.*\t/I!d;s///" shellfolders.cfu
  • C:\ComboFix\sed.cfexe "/ APPDATA\t.*\t/I!d;s///" shellfolders.cfu
  • C:\ComboFix\sed.cfexe -n "G; s/\n/&&/; /^\([ -~]*\n\).*\n\1/d; s/\n//; h; P"
  • C:\ComboFix\sed.cfexe "/ LOCAL SETTINGS\t.*\t/I!d;s///" shellfolders.cfu
  • C:\ComboFix\sed.cfexe "/ START MENU\t.*\t/I!d;s///" shellfolders.cfu
  • C:\ComboFix\sed.cfexe "/ STARTUP\t.*\t/I!d;s///" shellfolders.cfu
  • C:\ComboFix\sed.cfexe "/ LOCAL APPDATA\t.*\t/I!d;s///" shellfolders.cfu
  • C:\ComboFix\sed.cfexe "/ PROGRAMS\t.*\t/I!d;s///" shellfolders.cfu
  • C:\ComboFix\sed.cfexe "/\\/I!d;/_Classes$/Id;"
  • C:\ComboFix\swreg.cfexe query "HKEY_USERS\.DEFAULT\software\microsoft\windows\currentversion\explorer\shell folders"
  • C:\ComboFix\swreg.cfexe load "hku\DEFAUL~1" "DEFAUL~1\ntuser.dat"
  • C:\ComboFix\swreg.cfexe query hku
  • C:\ComboFix\swreg.cfexe query "HKEY_USERS\defaul~1\software\microsoft\windows\currentversion\explorer\shell folders"
  • C:\ComboFix\swreg.cfexe query "HKEY_USERS\S-1-5-21-2052111302-484763869-725345543-1003\software\microsoft\windows\currentversion\explorer\shell folders"
  • C:\ComboFix\swreg.cfexe query "HKEY_USERS\S-1-5-18\software\microsoft\windows\currentversion\explorer\shell folders"
  • C:\ComboFix\swreg.cfexe query "HKEY_USERS\S-1-5-19\software\microsoft\windows\currentversion\explorer\shell folders"
  • C:\ComboFix\swreg.cfexe query "HKEY_USERS\S-1-5-20\software\microsoft\windows\currentversion\explorer\shell folders"
  • C:\ComboFix\sed.cfexe "/ CACHE\t.*\t/I!d;s///" shellfolders.cfu
  • C:\ComboFix\regt.cfexe /s region.cf
  • C:\ComboFix\nircmd.cfexe sysrefresh intl
  • C:\ComboFix\swreg.cfexe copy "hkcu\control panel\international" "hkcu\control panel\international_combofixbackup" /s
  • C:\ComboFix\swreg.cfexe copy "hku\.default\control panel\international" "hku\.default\control panel\international_combofixbackup" /s
  • C:\ComboFix\nircmd.cfexe service start winmgmt
  • C:\ComboFix\vfind.cfexe -rtf -d+2012-05-02 C:\ComboFix\ComboFix.bat
  • C:\ComboFix\nircmd.cfexe Infobox "Current date is 2012-05-12. This copy of ComboFix has expired.~n~nDelete this copy before downloading an updated copy" "ABORT - 07-08-30.1"
  • C:\ComboFix\vfind.cfexe -lrtf setpath.bat
  • C:\ComboFix\sed.cfexe "/setpath/I!d;s/.\{26\}//;s/ .*//;"
  • C:\ComboFix\sed.cfexe "/ MY PICTURES\t.*\t/I!d;s///" shellfolders.cfu
  • C:\ComboFix\swreg.cfexe unload "hku\DEFAUL~1"
  • C:\ComboFix\sed.cfexe "/ DESKTOP\t.*\t/I!d;s///" shellfolders.cfu
  • C:\ComboFix\sed.cfexe "/ FAVORITES\t.*\t/I!d;s///" shellfolders.cfu
  • C:\ComboFix\sed.cfexe "/common appdata=/I!d;s/\x22\|.*=//g" setpath.bat
  • C:\ComboFix\sed.cfexe "s/\x22\|[ ]*$//g;"
  • C:\ComboFix\swreg.cfexe query "hkcu\control panel\international_combofixbackup"
  • C:\ComboFix\nircmd.cfexe killprocess regt.cfexe
  • C:\ComboFix\sed.cfexe "s/.*/&\\ntuser.dat/;" profiles.folder.cf
  • C:\ComboFix\vfind.cfexe -mrtd "*"
  • C:\ComboFix\nircmd.cfexe killprocess OSO.EXE
  • C:\ComboFix\nircmd.cfexe killprocess verclsid.dat
  • C:\ComboFix\nircmd.cfexe killprocess logo1_.exe
  • C:\ComboFix\nircmd.cfexe killprocess rundl132.exe
  • C:\ComboFix\nircmd.cfexe killprocess vfind.cfexe
  • C:\ComboFix\nircmd.cfexe killprocess grep.cfexe
  • C:\ComboFix\swreg.cfexe query "hklm\system\currentcontrolset\control\session manager\environment" /v path
  • C:\ComboFix\nircmd.cfexe killprocess find.cfexe
  • C:\ComboFix\nircmd.cfexe killprocess findstr.cfexe
  • C:\ComboFix\swreg.exe query hklm\system\currentcontrolset\enum\root\system
  • C:\ComboFix\swreg.exe import cfexe.cf
  • C:\ComboFix\nircmd.exe regdelval "hkcu\software\policies\microsoft\windows\system" "disablecmd"
  • C:\ComboFix\nircmd.exe win close ititle "ComboFix"
  • C:\ComboFix\nircmd.cfexe killprocess thguard.exe
  • C:\ComboFix\nircmd.cfexe killprocess fubcwj.exe
  • C:\ComboFix\nircmd.cfexe killprocess severe.exe
  • C:\ComboFix\nircmd.cfexe killprocess bryato.exe
  • C:\ComboFix\nircmd.cfexe killprocess conime.exe
  • C:\ComboFix\sed.cfexe "/.*\t/!d;s///;s/;/\n/g"
  • C:\ComboFix\swreg.cfexe save "hku\.default\software\microsoft\windows\currentversion\explorer\shell folders" temp00.hiv
  • C:\ComboFix\dumphive.cfexe temp00.hiv runs.cf
  • C:\ComboFix\setpath.cfexe
  • C:\ComboFix\sed.cfexe "s/.*/@&/;"
  • C:\ComboFix\swreg.cfexe save "hklm\software\microsoft\windows\currentversion\internet settings\activex cache" temp00.hiv
  • C:\ComboFix\dumphive.cfexe -e temp00.hiv runs.cf
  • C:\ComboFix\sed.cfexe "/Tasksfolder/I!d;s/\x22$//;s/.*\x22//;s/\\\\/\\/g" runs.cf
  • C:\ComboFix\dumphive.cfexe temp00.hiv runs.cf
  • C:\ComboFix\swreg.cfexe save "hklm\software\microsoft\schedulingagent" temp00.hiv
  • C:\ComboFix\swreg.cfexe query "hklm\system\currentcontrolset\control\session manager\environment" /v comspec
  • C:\ComboFix\sed.cfexe "/reg_expand_sz/I!d;s/.*\t//"
  • C:\ComboFix\sed.cfexe -e :a -e "N;s/\n/;/g;ta;"
  • C:\ComboFix\sed.cfexe "$d;s/.*/%systemroot%\\system32;%systemroot%;%systemroot%\\system32\\wbem;&/;"
  • C:\ComboFix\swreg.cfexe delete "hkcu\software\microsoft\windows\currentversion\policies\system" /v "disableregistrytools"
  • C:\ComboFix\regt.cfexe /s creg.cf
  • C:\ComboFix\nircmd.cfexe service manual wmi
  • C:\ComboFix\swreg.cfexe query hkcr\clsid\{9f143c3a-1457-6cca-03a7-7aa23b61e40f}\inprocserver32 /ve
  • C:\ComboFix\sed.cfexe "/:\\/!d;s/.*\t//;"
Executes the following:
  • <SYSTEM32>\findstr.exe /m . "DEFAUL~1\ntuser.dat"
  • <SYSTEM32>\findstr.exe /m . "LOCALS~1\ntuser.dat"
  • <SYSTEM32>\find.exe "\\"
  • <SYSTEM32>\findstr.exe /m . "ALLUSE~1\ntuser.dat"
  • <SYSTEM32>\sort.exe
  • <SYSTEM32>\findstr.exe . 3rr
  • <SYSTEM32>\findstr.exe /m . "NETWOR~1\ntuser.dat"
  • <SYSTEM32>\findstr.exe /m . "%USERNAME%\ntuser.dat"
  • <SYSTEM32>\findstr.exe /v /x /i "%systemroot% %systemroot%\system32 %systemroot%\system32\wbem %WINDIR% <SYSTEM32> <SYSTEM32>\wbem"
  • <SYSTEM32>\findstr.exe /i /l /x %systemroot%\system32\cmd.exe
  • <SYSTEM32>\find.exe "Windows XP"
  • <SYSTEM32>\find.exe "Version 6.0.6000"
  • <SYSTEM32>\chkdsk.exe /l
  • <SYSTEM32>\find.exe "FAT"
  • <SYSTEM32>\findstr.exe /m /i /f:/ update_load
  • <SYSTEM32>\chcp.com
Forces autoplay for removable media.
Sets a new unauthorized home page for Windows Internet Explorer.
Modifies file system :
Creates the following files:
  • <SYSTEM32>\swreg.exe
  • <SYSTEM32>\moveex.exe
  • %WINDIR%\nircmd.exe
  • %WINDIR%\catchme.exe
  • <SYSTEM32>\swxcacls.exe
  • C:\ComboFix\nircmd.cfexe
  • <SYSTEM32>\vfind.exe
  • <SYSTEM32>\swsc.exe
  • C:\ComboFix\regt.cfexe
  • C:\ComboFix\shellfolders.cfu
  • C:\ComboFix\hiveloads.cfu
  • C:\ComboFix\APPDATA.folder.cf
  • C:\ComboFix\APPDATAB.cfu
  • C:\ComboFix\temp00.hiv
  • C:\ComboFix\setpath.bat
  • C:\ComboFix\profiles.folder.cf
  • C:\ComboFix\runs.cf
  • C:\ComboFix\ERDNTDOS.LOC
  • C:\ComboFix\ERDNT.e_e
  • C:\ComboFix\ERUNT.LOC
  • C:\ComboFix\ERDNTWIN.LOC
  • C:\ComboFix\swxcacls.cfexe
  • C:\ComboFix\swsc.cfexe
  • C:\ComboFix\zip.cfexe
  • C:\ComboFix\vfind.cfexe
  • C:\ComboFix\findcombo.vbs
  • C:\ComboFix\SvcDrv.vbs
  • C:\ComboFix\restore_pt.vbs
  • C:\ComboFix\swreg.cfexe
  • C:\ComboFix\errdbg.cf
  • C:\ComboFix\lnkread.vbs
  • C:\ComboFix\FProps.vbs
  • C:\ComboFix\OSid.vbs
  • C:\ComboFix\LocalDrive.vbs
  • C:\Documents and Settings\Default User\ntuser.dat.LOG
  • C:\ComboFix\MY PICTURES.folder.cf
  • C:\ComboFix\dll_whitelist.cf
  • C:\ComboFix\dnd.cf
  • C:\ComboFix\FAVORITESB.cfu
  • C:\ComboFix\DESKTOP.folder.cf
  • C:\ComboFix\MY PICTURESB.cfu
  • C:\ComboFix\FAVORITES.folder.cf
  • C:\ComboFix\whitedir.cf
  • C:\ComboFix\borlander_file.cf
  • C:\ComboFix\Cfolders.cf
  • C:\ComboFix\vundonames.cf
  • C:\ComboFix\borlander_folder.cf
  • C:\ComboFix\miscfile.cf
  • C:\ComboFix\whitedirCreated.cf
  • C:\ComboFix\Cfiles.cf
  • C:\ComboFix\attr.cf
  • C:\ComboFix\LOCAL SETTINGS.folder.cf
  • C:\ComboFix\LOCAL SETTINGSB.cfu
  • C:\ComboFix\LOCAL APPDATA.folder.cf
  • C:\ComboFix\LOCAL APPDATAB.cfu
  • C:\ComboFix\TEMPLATES.folder.cf
  • C:\ComboFix\TEMPLATESB.cfu
  • C:\ComboFix\PERSONAL.folder.cf
  • C:\ComboFix\PERSONALB.cfu
  • C:\ComboFix\PROGRAMSB.cfu
  • C:\ComboFix\CACHEB.cfu
  • C:\ComboFix\STARTUP.folder.cf
  • C:\ComboFix\DESKTOPB.cfu
  • C:\ComboFix\CACHE.folder.cf
  • C:\ComboFix\START MENUB.cfu
  • C:\ComboFix\PROGRAMS.folder.cf
  • C:\ComboFix\STARTUPB.cfu
  • C:\ComboFix\START MENU.folder.cf
  • C:\ComboFix\023v.cf
  • C:\ComboFix\023.cf
  • C:\ComboFix\clsid.cf
  • C:\ComboFix\cfexe.cf
  • C:\ComboFix\NTPBack.exe
  • C:\ComboFix\ntp.exe
  • C:\ComboFix\ComboFix.sys
  • C:\ComboFix\swreg.exe
  • C:\ComboFix\Creg.cf
  • C:\ComboFix\LocalSystemNetworkRestricted.cf
  • C:\ComboFix\LocalServiceNetworkRestricted.cf
  • C:\ComboFix\ndis_combofix.cf
  • C:\ComboFix\Look.cf
  • C:\ComboFix\executables.cf
  • C:\ComboFix\erunt.cf
  • C:\ComboFix\LocalService.cf
  • C:\ComboFix\L2M_combofix.cf
  • C:\ComboFix\DelClsid.bat
  • C:\ComboFix\ComboFix.bat
  • C:\ComboFix\FIXLSP.bat
  • C:\ComboFix\FIND3M.bat
  • C:\ComboFix\CF_anti-viking.bat
  • C:\ComboFix\Boot.bat
  • C:\ComboFix\Combobatch.bat
  • C:\ComboFix\CFCleanUp.bat
  • C:\ComboFix\history.bat
  • C:\ComboFix\Sys.bat
  • C:\ComboFix\Qoo.bat
  • C:\ComboFix\nircmd.exe
  • C:\ComboFix\upload.bat
  • C:\ComboFix\Look2Me.bat
  • C:\ComboFix\List-C.bat
  • C:\ComboFix\NTP.bat
  • C:\ComboFix\MoveIt.bat
  • C:\ComboFix\dd.cfexe
  • C:\ComboFix\catchme.cfexe
  • C:\ComboFix\ERUNT.cfexe
  • C:\ComboFix\dumphive.cfexe
  • C:\ComboFix\WhiteLegacy.cf
  • C:\ComboFix\whitedirB.cf
  • C:\ComboFix\zhsvc.cf
  • C:\ComboFix\winlogondef.cf
  • C:\ComboFix\grep.cfexe
  • C:\ComboFix\sed.cfexe
  • C:\ComboFix\RestartIt.cfexe
  • C:\ComboFix\SF.cfexe
  • C:\ComboFix\setpath.cfexe
  • C:\ComboFix\moveex.cfexe
  • C:\ComboFix\handle.cfexe
  • C:\ComboFix\Ntrights.cfexe
  • C:\ComboFix\mtee.cfexe
  • C:\ComboFix\notifykeys.cf
  • C:\ComboFix\NetworkService.cf
  • C:\ComboFix\region.cf
  • C:\ComboFix\Policies.cf
  • C:\ComboFix\netsvc.cf
  • C:\ComboFix\netsvc.bad.cf
  • C:\ComboFix\netsvc.xp.cf
  • C:\ComboFix\netsvc.vista.cf
  • C:\ComboFix\rogues.cf
  • C:\ComboFix\svchost.vista.cf
  • C:\ComboFix\svchost.cf
  • C:\ComboFix\v_combofix.cf
  • C:\ComboFix\system_ini.cf
  • C:\ComboFix\safeboot.def.cf
  • C:\ComboFix\safeboot.cf
  • C:\ComboFix\svc_wht.cf
  • C:\ComboFix\safeboot.def.vista.cf
Deletes the following files:
  • C:\ComboFix\MY PICTURESB.cfu
  • C:\ComboFix\PERSONALB.cfu
  • C:\ComboFix\LOCAL SETTINGSB.cfu
  • C:\ComboFix\hiveloads.cfu
  • C:\ComboFix\LOCAL APPDATAB.cfu
  • C:\ComboFix\STARTUPB.cfu
  • C:\ComboFix\TEMPLATESB.cfu
  • C:\ComboFix\START MENUB.cfu
  • C:\ComboFix\PROGRAMSB.cfu
  • C:\ComboFix\shellfolders.cfu
  • C:\ComboFix\CF_anti-viking.bat
  • C:\ComboFix\temp00.hiv
  • C:\ComboFix\cfexe.cf
  • C:\ComboFix\netsvc.vista.cf
  • C:\ComboFix\svchost.vista.cf
  • C:\ComboFix\DESKTOPB.cfu
  • C:\ComboFix\FAVORITESB.cfu
  • C:\ComboFix\CACHEB.cfu
  • C:\ComboFix\runs.cf
  • C:\ComboFix\APPDATAB.cfu
Miscellaneous:
Searches for the following windows:
  • ClassName: 'RegEdit_RegEdit' WindowName: ''
  • ClassName: 'Shell_TrayWnd' WindowName: ''
  • ClassName: 'EDIT' WindowName: ''

Curing recommendations

  1. If the operating system (OS) can be loaded (either normally or in safe mode), download Dr.Web Security Space and run a full scan of your computer and removable media you use. More about Dr.Web Security Space.
  2. If you cannot boot the OS, change the BIOS settings to boot your system from a CD or USB drive. Download the image of the emergency system repair disk Dr.Web® LiveDisk , mount it on a USB drive or burn it to a CD/DVD. After booting up with this media, run a full scan and cure all the detected threats.
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Download by serial number

Use Dr.Web Anti-virus for macOS to run a full scan of your Mac.

After booting up, run a full scan of all disk partitions with Dr.Web Anti-virus for Linux.

Download Dr.Web

Download by serial number

  1. If the mobile device is operating normally, download and install Dr.Web for Android. Run a full system scan and follow recommendations to neutralize the detected threats.
  2. If the mobile device has been locked by Android.Locker ransomware (the message on the screen tells you that you have broken some law or demands a set ransom amount; or you will see some other announcement that prevents you from using the handheld normally), do the following:
    • Load your smartphone or tablet in the safe mode (depending on the operating system version and specifications of the particular mobile device involved, this procedure can be performed in various ways; seek clarification from the user guide that was shipped with the device, or contact its manufacturer);
    • Once you have activated safe mode, install the Dr.Web for Android onto the infected handheld and run a full scan of the system; follow the steps recommended for neutralizing the threats that have been detected;
    • Switch off your device and turn it on as normal.

Find out more about Dr.Web for Android