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Trojan.StartPage.48668

Added to the Dr.Web virus database: 2012-11-06

Virus description added:

Technical Information

To ensure autorun and distribution:
Modifies the following registry keys:
  • [<HKLM>\SOFTWARE\Classes\regedit\shell\open\command] '' = 'regedit.exe %1'
  • [<HKLM>\SOFTWARE\Classes\comfile\shell\open\command] '' = '"%1" %*'
  • [<HKLM>\SOFTWARE\Microsoft\Command Processor] 'AutoRun' = ''
  • [<HKLM>\SOFTWARE\Classes\exefile\shell\open\command] '' = '"%1" %*'
  • [<HKLM>\SOFTWARE\Classes\batfile\shell\open\command] '' = '"%1" %*'
  • [<HKLM>\SOFTWARE\Classes\crexefile\shell\open\command] '' = '"%1" %*'
  • [<HKLM>\SOFTWARE\Classes\cmdfile\shell\open\command] '' = '"%1" %*'
  • [<HKLM>\SOFTWARE\Classes\regfile\shell\open\command] '' = 'regedit.exe "%1"'
Creates the following services:
  • [<HKLM>\SYSTEM\ControlSet001\Services\winmgmt] 'Start' = '00000002'
  • [<HKLM>\SYSTEM\ControlSet001\Services\wuauserv] '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\swreg.cfexe save "hklm\software\microsoft\windows\currentversion\internet settings\activex cache" temp00.hiv
  • C:\ComboFix\dumphive.cfexe temp00.hiv runs.cf
  • C:\ComboFix\swreg.cfexe save "hklm\software\microsoft\schedulingagent" temp00.hiv
  • C:\ComboFix\sed.cfexe "/Tasksfolder/I!d;s/\x22$//;s/.*\x22//;s/\\\\/\\/g" runs.cf
  • C:\ComboFix\dumphive.cfexe -e temp00.hiv runs.cf
  • C:\ComboFix\swreg.cfexe save "hku\.default\software\microsoft\windows\currentversion\explorer\shell folders" temp00.hiv
  • C:\ComboFix\regt.cfexe /s creg.cf
  • C:\ComboFix\sed.cfexe "/:\\/!d;s/.*\t//;"
  • C:\ComboFix\nircmd.cfexe service manual wmi
  • C:\ComboFix\sed.cfexe "s/.*$/@&/;"
  • C:\ComboFix\setpath.cfexe
  • C:\ComboFix\sed.cfexe -n "s/.*> *//;s/ .*//p;"
  • C:\ComboFix\nircmd.cfexe service start winmgmt
  • C:\ComboFix\nircmd.cfexe sysrefresh intl
  • C:\ComboFix\swreg.cfexe query hklm\software\swearware
  • C:\ComboFix\nircmd.cfexe wait 1500
  • C:\ComboFix\swsc.cfexe query srservice
  • C:\ComboFix\regt.cfexe /s region.cf
  • C:\ComboFix\nircmd.cfexe killprocess regt.cfexe
  • C:\ComboFix\vfind.cfexe -mrtd *
  • C:\ComboFix\swreg.cfexe query "hkcu\control panel\international_combofixbackup"
  • C:\ComboFix\swreg.cfexe copy "hku\.default\control panel\international" "hku\.default\control panel\international_combofixbackup" /s
  • C:\ComboFix\swreg.cfexe copy "hkcu\control panel\international" "hkcu\control panel\international_combofixbackup" /s
  • C:\ComboFix\swreg.cfexe query hkcr\clsid\{9f143c3a-1457-6cca-03a7-7aa23b61e40f}\inprocserver32 /ve
  • C:\ComboFix\nircmd.cfexe killprocess fubcwj.exe
  • C:\ComboFix\nircmd.cfexe killprocess conime.exe
  • C:\ComboFix\nircmd.cfexe killprocess severe.exe
  • C:\ComboFix\nircmd.cfexe killprocess rundl132.exe
  • C:\ComboFix\nircmd.cfexe killprocess logo1_.exe
  • C:\ComboFix\nircmd.cfexe killprocess bryato.exe
  • C:\ComboFix\nircmd.exe win close ititle "ComboFix"
  • C:\ComboFix\nircmd.exe regdelval "hkcu\software\policies\microsoft\windows\system" "disablecmd"
  • C:\ComboFix\swreg.exe query hklm\system\currentcontrolset\enum\root\system
  • C:\ComboFix\nircmd.cfexe killprocess thguard.exe
  • C:\ComboFix\swreg.exe import cfexe.cf
  • C:\ComboFix\nircmd.cfexe killprocess OSO.EXE
  • C:\ComboFix\sed.cfexe "$d;s/.*/%systemroot%\\system32;%systemroot%;%systemroot%\\system32\\wbem;&/;"
  • C:\ComboFix\sed.cfexe -e :a -e "N;s/\n/;/g;ta;"
  • C:\ComboFix\swreg.cfexe query "hklm\system\currentcontrolset\control\session manager\environment" /v comspec
  • C:\ComboFix\swreg.cfexe delete "hkcu\software\microsoft\windows\currentversion\policies\system" /v "disableregistrytools"
  • C:\ComboFix\sed.cfexe "/\treg_expand_sz/I!d;s/.*\t//"
  • C:\ComboFix\sed.cfexe "/.*\t/!d;s///;s/;/\n/g"
  • C:\ComboFix\nircmd.cfexe killprocess vfind.cfexe
  • C:\ComboFix\nircmd.cfexe killprocess verclsid.dat
  • C:\ComboFix\nircmd.cfexe killprocess find.cfexe
  • C:\ComboFix\swreg.cfexe query "hklm\system\currentcontrolset\control\session manager\environment" /v path
  • C:\ComboFix\nircmd.cfexe killprocess findstr.cfexe
Executes the following:
  • <SYSTEM32>\findstr.exe . 3rr
  • <SYSTEM32>\findstr.exe /i CFScript
  • <SYSTEM32>\find.exe "%USERNAME%"
  • <SYSTEM32>\find.exe "\"
  • <SYSTEM32>\findstr.exe /i ":\\"
  • <SYSTEM32>\regsvr32.exe /s <SYSTEM32>\vbscript.dll
  • <SYSTEM32>\chcp.com 437
  • <SYSTEM32>\find.exe /i "combofix"
  • <SYSTEM32>\findstr.exe /i state.*RUNNING
  • <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>\findstr.exe /m /i /f:/ update_load
  • <SYSTEM32>\find.exe "FAT"
  • <SYSTEM32>\find.exe "\\"
  • <SYSTEM32>\chcp.com
  • <SYSTEM32>\chkdsk.exe /l
Forces autoplay for removable media.
Sets a new unauthorized home page for Windows Internet Explorer.
Modifies file system :
Creates the following files:
  • C:\ComboFix\vfind.cfexe
  • C:\ComboFix\zip.cfexe
  • C:\ComboFix\ERDNT.e_e
  • C:\ComboFix\SF.cfexe
  • C:\ComboFix\swsc.cfexe
  • C:\ComboFix\swxcacls.cfexe
  • C:\ComboFix\ERDNTDOS.LOC
  • C:\ComboFix\FProps.vbs
  • C:\ComboFix\lnkread.vbs
  • C:\ComboFix\LocalDrive.vbs
  • C:\ComboFix\ERDNTWIN.LOC
  • C:\ComboFix\ERUNT.LOC
  • C:\ComboFix\findcombo.vbs
  • C:\ComboFix\dd.cfexe
  • C:\ComboFix\dumphive.cfexe
  • C:\ComboFix\ERUNT.cfexe
  • C:\ComboFix\winlogondef.cf
  • C:\ComboFix\zhsvc.cf
  • C:\ComboFix\catchme.cfexe
  • C:\ComboFix\handle.cfexe
  • C:\ComboFix\RestartIt.cfexe
  • C:\ComboFix\sed.cfexe
  • C:\ComboFix\setpath.cfexe
  • C:\ComboFix\moveex.cfexe
  • C:\ComboFix\mtee.cfexe
  • C:\ComboFix\Ntrights.cfexe
  • C:\ComboFix\OSid.vbs
  • C:\ComboFix\dnd.cf
  • C:\ComboFix\dll_whitelist.cf
  • C:\ComboFix\whitedir.cf
  • C:\ComboFix\temp00.hiv
  • C:\ComboFix\runs.cf
  • C:\ComboFix\appdatafolders.cf
  • C:\ComboFix\miscfile.cf
  • C:\ComboFix\borlander_file.cf
  • C:\ComboFix\borlander_folder.cf
  • C:\ComboFix\vundonames.cf
  • C:\ComboFix\attr.cf
  • C:\ComboFix\Cfiles.cf
  • C:\ComboFix\Cfolders.cf
  • C:\ComboFix\swreg.cfexe
  • C:\ComboFix\nircmd.cfexe
  • <SYSTEM32>\swxcacls.exe
  • C:\ComboFix\restore_pt.vbs
  • C:\ComboFix\SvcDrv.vbs
  • C:\ComboFix\errdbg.cf
  • <SYSTEM32>\swsc.exe
  • %WINDIR%\nircmd.exe
  • C:\ComboFix\regt.cfexe
  • C:\ComboFix\setpath.bat
  • <SYSTEM32>\vfind.exe
  • <SYSTEM32>\swreg.exe
  • %WINDIR%\catchme.exe
  • C:\ComboFix\nircmd.exe
  • C:\ComboFix\ntp.exe
  • C:\ComboFix\NTPBack.exe
  • C:\ComboFix\Qoo.bat
  • C:\ComboFix\Sys.bat
  • C:\ComboFix\upload.bat
  • C:\ComboFix\swreg.exe
  • C:\ComboFix\cfexe.cf
  • C:\ComboFix\clsid.cf
  • C:\ComboFix\Creg.cf
  • C:\ComboFix\ComboFix.sys
  • C:\ComboFix\023.cf
  • C:\ComboFix\023v.cf
  • C:\ComboFix\Combobatch.bat
  • C:\ComboFix\ComboFix.bat
  • C:\ComboFix\DelClsid.bat
  • C:\ComboFix\Boot.bat
  • C:\ComboFix\CF_anti-viking.bat
  • C:\ComboFix\CFCleanUp.bat
  • C:\ComboFix\FIND3M.bat
  • C:\ComboFix\Look2Me.bat
  • C:\ComboFix\MoveIt.bat
  • C:\ComboFix\NTP.bat
  • C:\ComboFix\FIXLSP.bat
  • C:\ComboFix\history.bat
  • C:\ComboFix\List-C.bat
  • C:\ComboFix\erunt.cf
  • C:\ComboFix\safeboot.cf
  • C:\ComboFix\safeboot.def.cf
  • C:\ComboFix\safeboot.def.vista.cf
  • C:\ComboFix\Policies.cf
  • C:\ComboFix\region.cf
  • C:\ComboFix\rogues.cf
  • C:\ComboFix\svc_wht.cf
  • C:\ComboFix\v_combofix.cf
  • C:\ComboFix\whitedirB.cf
  • C:\ComboFix\WhiteLegacy.cf
  • C:\ComboFix\svchost.cf
  • C:\ComboFix\svchost.vista.cf
  • C:\ComboFix\system_ini.cf
  • C:\ComboFix\LocalServiceNetworkRestricted.cf
  • C:\ComboFix\LocalSystemNetworkRestricted.cf
  • C:\ComboFix\Look.cf
  • C:\ComboFix\executables.cf
  • C:\ComboFix\L2M_combofix.cf
  • C:\ComboFix\LocalService.cf
  • C:\ComboFix\ndis_combofix.cf
  • C:\ComboFix\netsvc.xp.cf
  • C:\ComboFix\NetworkService.cf
  • C:\ComboFix\notifykeys.cf
  • C:\ComboFix\netsvc.bad.cf
  • C:\ComboFix\netsvc.cf
  • C:\ComboFix\netsvc.vista.cf
Deletes the following files:
  • C:\ComboFix\CF_anti-viking.bat
  • C:\ComboFix\temp00.hiv
  • C:\ComboFix\runs.cf
  • C:\ComboFix\netsvc.vista.cf
  • C:\ComboFix\svchost.vista.cf
  • C:\ComboFix\cfexe.cf
Moves the following files:
  • from C:\ComboFix\netsvc.xp.cf to C:\ComboFix\netsvc.cf
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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  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

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