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\cfexefile\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\wuauserv] 'Start' = '00000002'
Malicious functions:
To complicate detection of its presence in the operating system,
forces the system hide from view:
- hidden files
Creates and executes the following:
- C:\ComboFix\swreg.cfexe save "hku\.default\software\microsoft\windows\currentversion\explorer\shell folders" temp00.hiv
- 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 temp00.hiv runs.cf
- C:\ComboFix\setpath.cfexe
- C:\ComboFix\swreg.cfexe query hkcr\clsid\{9f143c3a-1457-6cca-03a7-7aa23b61e40f}\inprocserver32 /ve
- C:\ComboFix\swreg.cfexe delete "hkcu\software\microsoft\windows\currentversion\policies\system" /v "disableregistrytools"
- C:\ComboFix\regt.cfexe /s creg.cf
- C:\ComboFix\sed.cfexe "/:\\/!d;s/.*\t//;"
- C:\ComboFix\sed.cfexe -n "s/.*> *//;s/ .*//p;"
- C:\ComboFix\nircmd.cfexe sysrefresh intl
- C:\ComboFix\regt.cfexe /s region.cf
- C:\ComboFix\swreg.cfexe query hklm\software\swearware
- C:\ComboFix\nircmd.cfexe sysrefresh
- C:\ComboFix\swreg.cfexe copy "hku\.default\control panel\international" "hku\.default\control panel\international_combofixbackup" /s
- C:\ComboFix\nircmd.cfexe killprocess regt.cfexe
- C:\ComboFix\vfind.cfexe -mrtd *
- C:\ComboFix\swreg.cfexe copy "hkcu\control panel\international" "hkcu\control panel\international_combofixbackup" /s
- C:\ComboFix\swreg.cfexe query "hkcu\control panel\international_combofixbackup"
- C:\ComboFix\swreg.cfexe query "hklm\system\currentcontrolset\control\session manager\environment" /v comspec
- C:\ComboFix\swreg.exe add hkcr\cf_auto_file\defaulticon /ve /d shell32.dll,-154
- C:\ComboFix\swreg.exe add hkcr\cfexefile\defaulticon /ve /d explorer.exe,-111
- C:\ComboFix\nircmd.cfexe killprocess bryato.exe
- C:\ComboFix\nircmd.cfexe killprocess thguard.exe
- C:\ComboFix\swreg.exe copy hkcr\exefile hkcr\cfexefile /s
- C:\ComboFix\nircmd.exe win close ititle "ComboFix"
- C:\ComboFix\nircmd.exe regdelval "hkcu\software\policies\microsoft\windows\system" "disablecmd"
- C:\ComboFix\swreg.exe add hkcr\.cfexe /ve /d cfexefile
- C:\ComboFix\swreg.exe query hklm\system\currentcontrolset\enum\root\system
- C:\ComboFix\nircmd.cfexe killprocess conime.exe
- C:\ComboFix\swreg.cfexe query "hklm\system\currentcontrolset\control\session manager\environment" /v path
- C:\ComboFix\nircmd.cfexe killprocess verclsid.dat
- C:\ComboFix\swreg.cfexe add "hklm\system\currentcontrolset\control\session manager\environment" /v path /t reg_expand_sz /d "<SYSTEM32>;%WINDIR%;<SYSTEM32>\wbem;%SystemRoot%\system32;%SystemRoot%;%SystemRoot%\System32\Wbem"
- C:\ComboFix\sed.cfexe "/.*\t/!d; s/\x22//g"
- C:\ComboFix\nircmd.cfexe killprocess OSO.EXE
- C:\ComboFix\nircmd.cfexe killprocess severe.exe
- C:\ComboFix\nircmd.cfexe killprocess fubcwj.exe
- C:\ComboFix\nircmd.cfexe killprocess rundl132.exe
- C:\ComboFix\nircmd.cfexe killprocess logo1_.exe
Executes the following:
- <SYSTEM32>\find.exe "\"
- <SYSTEM32>\find.exe "Windows 2000"
- <SYSTEM32>\find.exe "\\"
- <SYSTEM32>\find.exe "%USERNAME%"
- <SYSTEM32>\find.exe /i "combofix"
- <SYSTEM32>\chcp.com 437
- <SYSTEM32>\findstr.exe . 3rr
- <SYSTEM32>\findstr.exe /i /r "ComboFix-Do CFScript"
- <SYSTEM32>\find.exe "FAT"
- <SYSTEM32>\findstr.exe /i /l "<SYSTEM32>;%WINDIR%;<SYSTEM32>\wbem" ~
- <SYSTEM32>\find.exe /i "reg_expand_sz"
- <SYSTEM32>\find.exe "Windows XP"
- <SYSTEM32>\findstr.exe /i reg_expand_sz ~
- <SYSTEM32>\chcp.com
- <SYSTEM32>\chkdsk.exe /l
- <SYSTEM32>\findstr.exe /i /l "%systemroot%\\system32\\cmd.exe C:\\WINDOWS\\system32\\cmd.exe" ~
- <SYSTEM32>\findstr.exe /m /i /f:/ update_load
Forces autoplay for removable media.
Sets a new unauthorized home page for Windows Internet Explorer.
Modifies file system :
Creates the following files:
- C:\ComboFix\findcombo.vbs
- C:\ComboFix\FProps.vbs
- C:\ComboFix\ERUNT.LOC
- C:\ComboFix\ERDNTDOS.LOC
- C:\ComboFix\ERDNTWIN.LOC
- <SYSTEM32>\swxcacls.exe
- <SYSTEM32>\swsc.exe
- C:\ComboFix\nircmd.cfexe
- C:\ComboFix\ErrDbg.cf
- C:\ComboFix\swreg.cfexe
- C:\ComboFix\ERDNT.e_e
- C:\ComboFix\RestartIt.cfexe
- C:\ComboFix\sed.cfexe
- C:\ComboFix\Ntrights.cfexe
- C:\ComboFix\moveex.cfexe
- C:\ComboFix\mtee.cfexe
- C:\ComboFix\swxcacls.cfexe
- C:\ComboFix\vfind.cfexe
- C:\ComboFix\swsc.cfexe
- C:\ComboFix\setpath.cfexe
- C:\ComboFix\SF.cfexe
- <SYSTEM32>\vfind.exe
- C:\ComboFix\attr.cf
- C:\ComboFix\Cfiles.cf
- C:\ComboFix\miscfile.cf
- C:\ComboFix\dll_whitelist.cf
- C:\ComboFix\whitedir.cf
- C:\ComboFix\vundonames.cf
- C:\ComboFix\zhsvc.cf
- C:\ComboFix\borlander_folder.cf
- C:\ComboFix\Cfolders.cf
- C:\ComboFix\borlander_file.cf
- C:\ComboFix\dnd.cf
- C:\ComboFix\~
- C:\ComboFix\regt.cfexe
- %WINDIR%\nircmd.exe
- <SYSTEM32>\swreg.exe
- %WINDIR%\catchme.exe
- C:\ComboFix\appdatafolders.cf
- C:\ComboFix\active_setup.cf
- C:\ComboFix\runs.cf
- C:\ComboFix\setpath.bat
- C:\ComboFix\temp00.hiv
- C:\ComboFix\nircmd.exe
- C:\ComboFix\ntp.exe
- C:\ComboFix\Sys.bat
- C:\ComboFix\NTP.bat
- C:\ComboFix\Qoo.bat
- C:\ComboFix\bad_netsvc.cf
- C:\ComboFix\Creg.cf
- C:\ComboFix\ComboFix.sys
- C:\ComboFix\NTPBack.exe
- C:\ComboFix\swreg.exe
- C:\ComboFix\MoveIt.bat
- C:\ComboFix\Combobatch.bat
- C:\ComboFix\ComboFix.bat
- C:\ComboFix\CFCleanUp.bat
- C:\ComboFix\Boot.bat
- C:\ComboFix\CF_anti-viking.bat
- C:\ComboFix\List-C.bat
- C:\ComboFix\Look2Me.bat
- C:\ComboFix\history.bat
- C:\ComboFix\FIND3M.bat
- C:\ComboFix\FIXLSP.bat
- C:\ComboFix\def_safeboot.cf
- C:\ComboFix\WhiteLegacy.cf
- C:\ComboFix\winlogondef.cf
- C:\ComboFix\whitedirB.cf
- C:\ComboFix\system_ini.cf
- C:\ComboFix\v_combofix.cf
- C:\ComboFix\ERUNT.cfexe
- C:\ComboFix\handle.cfexe
- C:\ComboFix\dumphive.cfexe
- C:\ComboFix\catchme.cfexe
- C:\ComboFix\dd.cfexe
- C:\ComboFix\svc_wht.cf
- C:\ComboFix\Look.cf
- C:\ComboFix\ndis_combofix.cf
- C:\ComboFix\L2M_combofix.cf
- C:\ComboFix\erunt.cf
- C:\ComboFix\executables.cf
- C:\ComboFix\rogues.cf
- C:\ComboFix\safeboot.cf
- C:\ComboFix\region.cf
- C:\ComboFix\net_svc.cf
- C:\ComboFix\notifykeys.cf
Deletes the following files:
- C:\ComboFix\temp00.hiv
- C:\ComboFix\runs.cf
- C:\ComboFix\~
- C:\ComboFix\CF_anti-viking.bat
Miscellaneous:
Searches for the following windows:
- ClassName: 'RegEdit_RegEdit' WindowName: ''
- ClassName: 'Shell_TrayWnd' WindowName: ''
- ClassName: 'EDIT' WindowName: ''