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Profil

Trojan.StartPage.48953

Added to the Dr.Web virus database: 2012-11-13

Virus description added:

Technical Information

To ensure autorun and distribution:
Modifies the following registry keys:
  • [<HKLM>\SOFTWARE\Classes\comfile\shell\open\command] '' = '"%1" %*'
  • [<HKLM>\SOFTWARE\Classes\cmdfile\shell\open\command] '' = '"%1" %*'
  • [<HKLM>\SOFTWARE\Classes\exefile\shell\open\command] '' = '"%1" %*'
  • [<HKLM>\SOFTWARE\Classes\regedit\shell\open\command] '' = 'regedit.exe %1'
  • [<HKLM>\SOFTWARE\Classes\regfile\shell\open\command] '' = 'regedit.exe "%1"'
  • [<HKLM>\SOFTWARE\Classes\dunfile\shell\open\command] '' = ''
  • [<HKLM>\SOFTWARE\Classes\.exe] '' = 'exefile'
  • [<HKLM>\SOFTWARE\Classes\batfile\shell\open\command] '' = '"%1" %*'
  • [<HKLM>\SOFTWARE\Classes\telnet\shell\open\command] '' = 'rundll32.exe url.dll,TelnetProtocolHandler %l'
Creates the following services:
  • [<HKLM>\SYSTEM\ControlSet001\Services\winmgmt] 'Start' = '00000002'
  • [<HKLM>\SYSTEM\ControlSet001\Services\wuauserv] 'Start' = '00000002'
  • [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess] '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)
  • System File Checker (SFC)
Creates and executes the following:
  • C:\ComboFix\grep.cfexe -Fixvf temp01
  • C:\ComboFix\sed.cfexe ":a; $!N; s/\n/\x3b/g; ta"
  • C:\ComboFix\swreg.cfexe query "hklm\system\currentcontrolset\control\session manager\environment" /v path
  • C:\ComboFix\sed.cfexe "/.*\t/!d; s///; s/\x3b/\n/g "
  • C:\ComboFix\swreg.cfexe query "hklm\system\currentcontrolset\control\session manager\environment" /v comspec
  • C:\ComboFix\grep.cfexe -q "Windows 2000"
  • C:\ComboFix\swreg.cfexe query "hklm\software\microsoft\windows nt\currentversion" /v currentversion
  • C:\ComboFix\grep.cfexe -iq "REG_EXPAND_SZ %systemroot%\\system32\\cmd.exe$"
  • C:\ComboFix\grep.cfexe -q "Windows XP"
  • C:\ComboFix\nircmd.cfexe killprocess verclsid.dat
  • C:\ComboFix\nircmd.cfexe killprocess flashy.exe
  • C:\ComboFix\nircmd.cfexe killprocess rundl132.exe
  • C:\ComboFix\nircmd.cfexe killprocess OSO.EXE
  • C:\ComboFix\nircmd.cfexe killprocess VFind.cfexe
  • C:\ComboFix\nircmd.cfexe killprocess ntvdm.exe
  • C:\ComboFix\swreg.cfexe add "hklm\software\microsoft\windows\currentversion\app paths\combofix.exe" /ve /d "<Full path to virus>"
  • C:\ComboFix\nircmd.cfexe killprocess grep.cfexe
  • C:\ComboFix\nircmd.cfexe killprocess sed.cfexe
  • C:\ComboFix\grep.cfexe -q "currentversion.* 6.0"
  • C:\ComboFix\nircmd.cfexe sysrefresh intl
  • C:\ComboFix\nircmd.cfexe service start winmgmt
  • C:\ComboFix\swreg.cfexe copy "hku\.default\control panel\international" "hku\.default\control panel\international_combofixbackup" /s
  • <SYSTEM32>\swreg.exe import region.dat
  • C:\ComboFix\vfind.cfexe -lrtf "datetest_"
  • C:\ComboFix\vfind.cfexe -rtf -d+2012-10-13 C:\ComboFix\ComboFix.bat
  • C:\ComboFix\nircmd.cfexe Infobox "Current date is 2012-10-23.~n~nThis copy of ComboFix has expired.~nPlease download an updated copy" "Expired - 07-12-07.3"
  • C:\ComboFix\sed.cfexe -r -e "/datetest_/I!d; s/.{26}//;s/ .*//"
  • C:\ComboFix\grep.cfexe -sq [0-9]
  • C:\ComboFix\sed.cfexe "/:\\/!d; s/.*\t//"
  • C:\ComboFix\swreg.cfexe delete "hkcu\software\microsoft\windows\currentversion\policies\system" /v "disableregistrytools"
  • C:\ComboFix\swreg.cfexe query hklm\system\currentcontrolset\enum\root\system
  • C:\ComboFix\swreg.cfexe query hkcr\clsid\{9f143c3a-1457-6cca-03a7-7aa23b61e40f}\inprocserver32 /ve
  • C:\ComboFix\regt.cfexe /s creg.dat
  • C:\ComboFix\swreg.cfexe query "hkcu\control panel\international_combofixbackup"
  • C:\ComboFix\swreg.cfexe copy "hkcu\control panel\international" "hkcu\control panel\international_combofixbackup" /s
  • C:\ComboFix\nircmd.cfexe service manual wmi
  • C:\ComboFix\swreg.cfexe query hklm\software\swearware /v combofix_wow
  • C:\ComboFix\nircmd.cfexe killprocess logo1_.exe
  • C:\ComboFix\sed.cfexe -r "/.* {14}/!d;s///"
  • C:\ComboFix\nircmd.exe killprocess nircmd.cfexe
  • C:\ComboFix\nircmd.cfexe cmdwait 2000 killprocess sed.cfexe
  • C:\ComboFix\ListDlls.cfexe cmd.exe
  • C:\ComboFix\grep.cfexe -Fsq \ Foreign.dat
  • C:\ComboFix\nircmd.cfexe abortshutdown
  • C:\ComboFix\swreg.cfexe query "hklm\system\currentcontrolset\control\nls\codepage" /v acp
  • C:\ComboFix\grep.cfexe -Fiq "/killall"
  • C:\ComboFix\grep.cfexe -Fiq /u
  • C:\ComboFix\nircmd.exe regdelval "hkcu\software\microsoft\command processor" "autorun"
  • C:\ComboFix\swxcacls.cfexe "<SYSTEM32>\cmd.exe" /p /ga:f /gs:f /gp:x /gu:x /q
  • C:\ComboFix\nircmd.exe exec hide swxcacls.cfexe "<SYSTEM32>\cmd.exe" /p /ga:f /gs:f /gp:x /gu:x /q
  • C:\ComboFix\nircmd.exe regdelval "hkcu\software\policies\microsoft\windows\system" "disablecmd"
  • C:\ComboFix\nircmd.exe regdelval "hklm\software\microsoft\command processor" "autorun"
  • C:\ComboFix\grep.cfexe -Fsqx "Microsoft Windows XP [Version 5.1.2600]"
  • C:\ComboFix\nircmd.cfexe cmdwait 2000 killprocess listdlls.cfexe
  • C:\ComboFix\nircmd.exe win close ititle "ComboFix"
  • C:\ComboFix\nircmd.exe win close ititle "pause"
  • C:\ComboFix\sed.cfexe "/.*\t/!d; s///"
  • C:\ComboFix\swreg.cfexe query "hklm\system\currentcontrolset\control\nls\codepage" /v oemcp
  • C:\ComboFix\grep.cfexe -Evxq "437|708|720|737|775|85[0257]|86[01234569]|874|93[26]|949|950|1258"
  • C:\ComboFix\grep.cfexe -q "10$"
  • C:\ComboFix\grep.cfexe -q "0A$"
  • 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\mtee.cfexe NlsLang
  • C:\ComboFix\grep.cfexe -q "0C$"
  • C:\ComboFix\swreg.cfexe add "hkcu\console\%systemroot%_system32_cmd.exe" /v CodePage /t reg_dword /d "1251"
  • C:\ComboFix\swreg.cfexe query "hklm\system\currentcontrolset\control\nls\language" /v installlanguage
  • C:\ComboFix\grep.cfexe -q "13$"
  • C:\ComboFix\grep.cfexe -q "16$"
  • C:\ComboFix\grep.cfexe -q "04$"
  • C:\ComboFix\grep.cfexe -q "07$"
  • C:\ComboFix\grep.cfexe -q "0B$"
Executes the following:
  • <SYSTEM32>\findstr.exe -MIF:/ update_load
  • <SYSTEM32>\chcp.com 1251
Injects code into
the following system processes:
  • <SYSTEM32>\cmd.exe
Modifies settings of Windows Internet Explorer:
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings] 'WarnonBadCertRecving' = '00000001'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings] 'WarnOnPost' = ''
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings] 'WarnOnPostRedirect' = '00000001'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings] 'WarnOnPostRedirect' = '00000000'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings] 'WarnOnZoneCrossing' = '00000001'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings] 'WarnonBadCertRecving' = '00000001'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings] 'WarnOnPost' = ''
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings] 'WarnOnPostRedirect' = '00000001'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings] 'WarnOnPostRedirect' = '00000000'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings] 'WarnOnZoneCrossing' = '00000001'
Forces autoplay for removable media.
Sets a new unauthorized home page for Windows Internet Explorer.
Modifies file system :
Creates the following files:
  • C:\ComboFix\safeboot.dat
  • C:\ComboFix\safeboot.def.dat
  • C:\ComboFix\rogues.dat
  • C:\ComboFix\Purity.dat
  • C:\ComboFix\region.dat
  • C:\ComboFix\safeboot.def.vista.dat
  • C:\ComboFix\system_ini.dat
  • C:\ComboFix\whitedirB.dat
  • C:\ComboFix\svchost.vista.dat
  • C:\ComboFix\svc_wht.dat
  • C:\ComboFix\svchost.dat
  • C:\ComboFix\Policies.dat
  • C:\ComboFix\LocalServiceNetworkRestricted.dat
  • C:\ComboFix\LocalSystemNetworkRestricted.dat
  • C:\ComboFix\LocalService.dat
  • C:\ComboFix\Creg.dat
  • C:\ComboFix\executables.dat
  • C:\ComboFix\ndis_combofix.dat
  • C:\ComboFix\netsvc.xp.dat
  • C:\ComboFix\NetworkService.dat
  • C:\ComboFix\netsvc.vista.dat
  • C:\ComboFix\netsvc.bad.dat
  • C:\ComboFix\netsvc.dat
  • C:\ComboFix\temp01
  • <SYSTEM32>\swxcacls.exe
  • C:\ComboFix\NlsLang
  • C:\ComboFix\erunt.dat
  • C:\ComboFix\errdbg.dat
  • <SYSTEM32>\swsc.exe
  • %WINDIR%\NirCmd.exe
  • C:\ComboFix\regt.cfexe
  • %WINDIR%\catchme.exe
  • <SYSTEM32>\VFind.exe
  • <SYSTEM32>\swreg.exe
  • C:\ComboFix\SvcDrv.vbs
  • C:\ComboFix\ERDNTDOS.LOC
  • C:\ComboFix\ERDNTWIN.LOC
  • C:\ComboFix\ERDNT.e_e
  • C:\ComboFix\WhiteLegacy.dat
  • C:\ComboFix\zhsvc.dat
  • C:\ComboFix\ERUNT.LOC
  • C:\ComboFix\OSid.vbs
  • C:\ComboFix\restore_pt.vbs
  • C:\ComboFix\LocalDrive.vbs
  • C:\ComboFix\FProps.vbs
  • C:\ComboFix\lnkread.vbs
  • C:\ComboFix\clsid.dat
  • C:\ComboFix\pid.bat
  • C:\ComboFix\Qoo.bat
  • C:\ComboFix\NTP.bat
  • C:\ComboFix\MoveIt.bat
  • C:\ComboFix\ND_.bat
  • C:\ComboFix\SetEnvmt.bat
  • C:\ComboFix\ntp.exe
  • C:\ComboFix\NTPBack.exe
  • C:\ComboFix\nircmd.exe
  • C:\ComboFix\Sys.bat
  • C:\ComboFix\upload.bat
  • C:\ComboFix\List-C.bat
  • C:\ComboFix\ComboFix.bat
  • C:\ComboFix\Comspec.bat
  • C:\ComboFix\Combobatch.bat
  • C:\ComboFix\Boot.bat
  • C:\ComboFix\CF_anti-viking.bat
  • C:\ComboFix\DelClsid.bat
  • C:\ComboFix\history.bat
  • C:\ComboFix\Lang.bat
  • C:\ComboFix\FIXLSP.bat
  • C:\ComboFix\Disclaimer.bat
  • C:\ComboFix\FIND3M.bat
  • C:\ComboFix\SF.cfexe
  • C:\ComboFix\swreg.cfexe
  • C:\ComboFix\setpath.cfexe
  • C:\ComboFix\RestartIt.cfexe
  • C:\ComboFix\sed.cfexe
  • C:\ComboFix\swsc.cfexe
  • C:\ComboFix\023.dat
  • C:\ComboFix\023v.dat
  • C:\ComboFix\zip.cfexe
  • C:\ComboFix\swxcacls.cfexe
  • C:\ComboFix\vfind.cfexe
  • C:\ComboFix\nircmd.cfexe
  • C:\ComboFix\dumphive.cfexe
  • C:\ComboFix\ERUNT.cfexe
  • C:\ComboFix\dd.cfexe
  • C:\ComboFix\ComboFix.sys
  • C:\ComboFix\catchme.cfexe
  • C:\ComboFix\grep.cfexe
  • C:\ComboFix\moveex.cfexe
  • C:\ComboFix\mtee.cfexe
  • C:\ComboFix\ListDlls.cfexe
  • C:\ComboFix\gsar.cfexe
  • C:\ComboFix\handle.cfexe
Deletes the following files:
  • C:\ComboFix\netsvc.vista.dat
  • C:\ComboFix\svchost.vista.dat
  • C:\ComboFix\CF_anti-viking.bat
  • C:\ComboFix\Comspec.bat
  • C:\ComboFix\nircmd.exe
  • C:\ComboFix\NlsLang
  • C:\ComboFix\temp01
Moves the following files:
  • from C:\ComboFix\netsvc.xp.dat to C:\ComboFix\netsvc.dat
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.

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