Tool.NirCmd.1

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\PROCEXP90] 'ImagePath' = '<DRIVERS>\PROCEXP90.SYS'
[<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' /pid=3912
'C:\ComboFix\swreg.cfexe' -td "<SYSTEM32>\baiso*"
'C:\ComboFix\swreg.cfexe' /pid=3944
'C:\ComboFix\vfind.cfexe' -td "%APPDATA%\macromedia\*www.in####focus.cn*" "%APPDATA%\macromedia\*www.br####aster.com*"
'C:\ComboFix\swreg.cfexe' /pid=3500
'C:\ComboFix\dumphive.cfexe' "%WINDIR%\Downloaded Program Files\cns*.*" /s
'C:\ComboFix\sed.cfexe' /pid=3676
'C:\ComboFix\vfind.cfexe' -rtd "C:\sys*" "%WINDIR%\sys*"
'C:\ComboFix\sed.cfexe' "/system32/Id;/[0-9]/!d;"
'C:\ComboFix\vfind.cfexe' -rtf "%WINDIR%\ad[0-9][0-9][0-9][0-9].exe" "<SYSTEM32>\ad[0-9][0-9][0-9][0-9].exe"
'C:\ComboFix\vfind.cfexe' -rtd %WINDIR%\inet20*
'C:\ComboFix\regt.cfexe' -rtd "%WINDIR%\Downloaded Program Files\*"
'C:\ComboFix\nircmd.cfexe' /pid=3980
'C:\ComboFix\vfind.cfexe' -mrtd "%CommonProgramFiles%\{*"
'C:\ComboFix\dumphive.cfexe' "<Non-existant Process> pid:"
'C:\ComboFix\nircmd.cfexe' /pid=3152
'C:\ComboFix\nircmd.cfexe' /c list-c.bat
'C:\ComboFix\swreg.cfexe' win close ititle "Project"
'C:\ComboFix\nircmd.cfexe' /pid=3052
'C:\ComboFix\swreg.exe' "/setpath/I!d;s/.\{26\}//;s/ .*//;"
'C:\ComboFix\nircmd.cfexe' /pid=3068
'C:\ComboFix\nircmd.cfexe' /pid=3084
'C:\ComboFix\setpath.cfexe' /pid=3392
'C:\ComboFix\sed.cfexe' /c handle |find.exe "<Non-existant Process> pid:"
'C:\ComboFix\swreg.cfexe'
'C:\ComboFix\swreg.cfexe' /pid=3384
'C:\ComboFix\swreg.cfexe' killprocess wscript.exe
'C:\ComboFix\swreg.cfexe' /pid=3340
'C:\ComboFix\nircmd.cfexe' killprocess temp2.exe
'C:\ComboFix\regt.cfexe' /m /i /s rggzs.com "%WINDIR%\system\*"
'C:\ComboFix\vfind.cfexe' /m /i /s qq\.com\/ "%PROGRAM_FILES%\internet explorer\*"
'C:\ComboFix\vfind.cfexe' /pid=2856
'C:\ComboFix\swreg.cfexe' /pid=3884
'C:\ComboFix\sed.cfexe' /m /i wm.krutahuli.info "<SYSTEM32>\dllcache\mswsock.dll"
'C:\ComboFix\dumphive.cfexe' /pid=3500
'C:\ComboFix\vfind.cfexe' /m /f:/ 'ClickerEx.EXE'
'C:\ComboFix\vfind.cfexe' -rtf -s-1000 "<SYSTEM32>\????????.dat"
'C:\ComboFix\vfind.cfexe' -rtf "<SYSTEM32>\auto[0-9][0-9]*.exe"
'C:\ComboFix\vfind.cfexe' -rtf "<SYSTEM32>\[az][oy][0-9][0-9][0-9].exe"
'C:\ComboFix\vfind.cfexe' -rtf -s-5000 "<SYSTEM32>\???????.dll"
'C:\ComboFix\vfind.cfexe' -rtf -s-12000 "%WINDIR%\????????*.dll"
'C:\ComboFix\vfind.cfexe' -rtf "%WINDIR%\Debug\UserMode\*.exe" "%WINDIR%\Debug\UserMode\*.dll"
'C:\ComboFix\vfind.cfexe' -rtf -s+520000 "<SYSTEM32>\????????????*.dll"
'C:\ComboFix\dumphive.cfexe' /pid=3548
'C:\ComboFix\SF.cfexe' /pid=1408
'C:\ComboFix\SF.cfexe' /c vfind -tf "%ALLUSERSPROFILE%\Application Data\microsoft\iehelper*"|mtee /+ d-delA.cf
'C:\ComboFix\mtee.cfexe' /+ d-delA.cf
'C:\ComboFix\sed.cfexe' /pid=2032
'C:\ComboFix\vfind.cfexe' -rtf -s-1000 -d+2013-03-28 "<DRIVERS>\ms*.sys" "<SYSTEM32>\ms*.sys"
'C:\ComboFix\vfind.cfexe' -rtf "<SYSTEM32>\ipv6mon?.dll"
'C:\ComboFix\swreg.cfexe' /pid=3692
'C:\ComboFix\nircmd.cfexe' /pid=3104
'C:\ComboFix\nircmd.cfexe' /pid=3048
'C:\ComboFix\nircmd.cfexe' /pid=3328
'C:\ComboFix\nircmd.cfexe' /pid=3088
'C:\ComboFix\sed.cfexe' /pid=2624
'C:\ComboFix\vfind.cfexe' /pid=2736
'C:\ComboFix\swreg.exe' /v /i [a-z].*\.
'C:\ComboFix\swreg.exe' -lrtf setpath.bat
'C:\ComboFix\swreg.cfexe' query hkcr\clsid\{9f143c3a-1457-6cca-03a7-7aa23b61e40f}\inprocserver32 /ve
'C:\ComboFix\sed.cfexe' "/:\\/!d;s/.*\t//;"
'C:\ComboFix\regt.cfexe' /s creg.cf
'C:\ComboFix\swreg.cfexe' delete "hkcu\software\microsoft\windows\currentversion\policies\system" /v "disableregistrytools"
'C:\ComboFix\nircmd.cfexe' killprocess verclsid.dat
'C:\ComboFix\swreg.cfexe' query "hklm\system\currentcontrolset\control\session manager\environment" /v path
'C:\ComboFix\swreg.cfexe' query "hklm\system\currentcontrolset\control\session manager\environment" /v comspec
'C:\ComboFix\swreg.cfexe' save "hklm\software\microsoft\windows\currentversion\internet settings\activex cache" temp00.hiv
'C:\ComboFix\sed.cfexe' -n "s/.*> *//;s/ .*//p;"
'C:\ComboFix\vfind.cfexe' -mrtd *
'C:\ComboFix\dumphive.cfexe' temp00.hiv runs.cf
'C:\ComboFix\setpath.cfexe'
'C:\ComboFix\sed.cfexe' "s/.*$/@&/;"
'C:\ComboFix\swreg.cfexe' save "hku\.default\software\microsoft\windows\currentversion\explorer\shell folders" temp00.hiv
'C:\ComboFix\nircmd.cfexe' killprocess OSO.EXE
'C:\ComboFix\swreg.exe' copy hkcr\exefile hkcr\cfexefile /s
'C:\ComboFix\swreg.exe' add hkcr\cfexefile\defaulticon /ve /d explorer.exe,-111
'C:\ComboFix\swreg.exe' add hkcr\cf_auto_file\defaulticon /ve /d shell32.dll,-154
'C:\ComboFix\swreg.exe' add hkcr\.cfexe /ve /d cfexefile
'C:\ComboFix\nircmd.exe' regdelval "hkcu\software\policies\microsoft\windows\system" "disablecmd"
'C:\ComboFix\nircmd.exe' win close ititle "ComboFix"
'C:\ComboFix\swreg.exe' query hklm\system\currentcontrolset\enum\root\system
'C:\ComboFix\nircmd.cfexe' killprocess severe.exe
'C:\ComboFix\nircmd.cfexe' killprocess logo1_.exe
'C:\ComboFix\nircmd.cfexe' killprocess rundl132.exe
'C:\ComboFix\nircmd.cfexe' killprocess fubcwj.exe
'C:\ComboFix\nircmd.cfexe' killprocess thguard.exe
'C:\ComboFix\nircmd.cfexe' killprocess bryato.exe
'C:\ComboFix\nircmd.cfexe' killprocess conime.exe
'C:\ComboFix\SF.cfexe' <SYSTEM32>
'C:\ComboFix\SF.cfexe' <SYSTEM32>\svchost.exe
'C:\ComboFix\swreg.cfexe' query "hklm\software\microsoft\windows nt\currentversion\winlogon\notify"
'C:\ComboFix\sed.cfexe' "s/.*/ Error: &/;"
'C:\ComboFix\swreg.cfexe' add "hklm\system\currentcontrolset\services\xpdt" /v mieke
'C:\ComboFix\swreg.cfexe' delete "hklm\system\currentcontrolset\services\xpdt" /f
'C:\ComboFix\swreg.cfexe' query "hklm\software\microsoft\windows nt\currentversion"
'C:\ComboFix\nircmd.exe' /pid=2800
'C:\ComboFix\nircmd.exe' /pid=2824
'C:\ComboFix\vfind.cfexe' -lrtf setpath.bat
'C:\ComboFix\sed.cfexe' "/setpath/I!d;s/.\{26\}//;s/ .*//;"
'C:\ComboFix\sed.cfexe' "/HKEY.*notify\\/!d;s///;"
'C:\ComboFix\vfind.cfexe' -lrtf -s-256000 "<SYSTEM32>\*.dll" "<SYSTEM32>\*.tmp"
'C:\ComboFix\sed.cfexe' "/2[1-5].,/!d;s/.\{47\}//;"
'C:\ComboFix\swreg.cfexe' delete "hklm\system\currentcontrolset\services\huy32" /f
'C:\ComboFix\regt.cfexe' /s region.cf
'C:\ComboFix\nircmd.cfexe' sysrefresh intl
'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\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\swreg.cfexe' add "hklm\system\currentcontrolset\services\lzx32" /v mieke
'C:\ComboFix\swreg.cfexe' delete "hklm\system\currentcontrolset\services\lzx32" /f
'C:\ComboFix\swreg.cfexe' add "hklm\system\currentcontrolset\services\huy32" /v mieke
'C:\ComboFix\swreg.cfexe' delete "hklm\system\currentcontrolset\services\msguard" /f
'C:\ComboFix\swreg.cfexe' add "hklm\system\currentcontrolset\services\pe386" /v mieke
'C:\ComboFix\swreg.cfexe' delete "hklm\system\currentcontrolset\services\pe386" /f
'C:\ComboFix\swreg.cfexe' add "hklm\system\currentcontrolset\services\msguard" /v mieke

Executes the following:

'<SYSTEM32>\find.exe' -rtf -d+2013-03-28 "<SYSTEM32>\setup[0-9]*.exe"
'<SYSTEM32>\attrib.exe' /m /i /f:/ www.fe##in.org
'<SYSTEM32>\findstr.exe' /pid=3296
'<SYSTEM32>\findstr.exe' /m /i \/autorun "<SYSTEM32>\mmc.exe"
'<SYSTEM32>\find.exe' /pid=3632
'<SYSTEM32>\chkdsk.exe' /pid=3728
'<SYSTEM32>\findstr.exe' /m /i /f:/ "PECompact2 BrowserHelper.dll"
'<SYSTEM32>\attrib.exe' /pid=3676
'<SYSTEM32>\find.exe' -rtf -d+2013-03-28 "<SYSTEM32>\driver?.*"
'<SYSTEM32>\findstr.exe' /S /D /c" dir /a-d/b "%WINDIR%\*.dll" "%WINDIR%\*.exe" 2>nul"
'<SYSTEM32>\findstr.exe' /i /v "\\conflict \\webex"
'<SYSTEM32>\find.exe' -rtf "<SYSTEM32>\windev-????-?*.sys"
'<SYSTEM32>\findstr.exe' /pid=3884
'<SYSTEM32>\findstr.exe' -rtd "%PROGRAM_FILES%\{12a1584b-2123-473d-8752-e82e74e3cb1b}"
'<SYSTEM32>\findstr.exe' -rtf -s2 "<SYSTEM32>\wns*.exe"
'<SYSTEM32>\findstr.exe' [0-9]
'<SYSTEM32>\findstr.exe' /v /i [a-z].*\.
'<SYSTEM32>\findstr.exe' /pid=1068
'<SYSTEM32>\findstr.exe' /pid=764
'<SYSTEM32>\findstr.exe' /m /f:/ _WinlogonStartupEvent@16
'<SYSTEM32>\findstr.exe' /m /i /f:/ JumpHookOn
'<SYSTEM32>\findstr.exe' /m PECompact2 "%WINDIR%\media\*.mid"
'<SYSTEM32>\findstr.exe' /m /i /c:"your computer is in danger" "%APPDATA%\microsoft\internet explorer\desktop.htt"
'<SYSTEM32>\findstr.exe' /i /m /f:/ popfiles.ini
'<SYSTEM32>\findstr.exe' /m /i /f:/ autoprt.sys
'<SYSTEM32>\findstr.exe' /m /i /f:/ autolive.dll
'<SYSTEM32>\findstr.exe' /m /i /f:/ WhAtTheFuck
'<SYSTEM32>\findstr.exe' /m /i /f:/ "kuaiso dodonew kuzhan"
'<SYSTEM32>\findstr.exe' /m /i autolive.dll "%WINDIR%\?????.exe"
'<SYSTEM32>\find.exe' /pid=3792
'<SYSTEM32>\findstr.exe' /pid=3980
'<SYSTEM32>\find.exe' /pid=4020
'<SYSTEM32>\find.exe' /m /i ZwQuerySystemInformation <DRIVERS>\ip6fw.sys
'<SYSTEM32>\findstr.exe' /m /i /l http://sh#e "<SYSTEM32>\????.dll"
'<SYSTEM32>\findstr.exe' /m /i /c:"nsis error" "%ALLUSERSPROFILE%\Application Data\adobe\*"
'<SYSTEM32>\findstr.exe' /m /i www.16#.com "%CommonProgramFiles%\microsoft shared\msinfo\*"
'<SYSTEM32>\findstr.exe' /m /i /f:/ p.cnn
'<SYSTEM32>\findstr.exe' /m /i sursen "%ALLUSERSPROFILE%\Application Data\adobe\*" "%WINDIR%\installer\*.msi"
'<SYSTEM32>\find.exe' "%USERNAME%"
'<SYSTEM32>\find.exe' "\"
'<SYSTEM32>\find.exe' "FAT"
'<SYSTEM32>\find.exe' "\\"
'<SYSTEM32>\find.exe' "Windows 2000"
'<SYSTEM32>\find.exe' /i "csdversion"
'<SYSTEM32>\findstr.exe' /m :::: dll_whitelist.cf whitedir.cf net_svc.cf miscfile.cf attr.cf Cfiles.cf Cfolders.cf borlander_file.cf borlander_folder.cf vundonames.cf zhsvc.cf
'<SYSTEM32>\findstr.exe' . 3rr
'<SYSTEM32>\findstr.exe' /i ComboFix-Do
'<SYSTEM32>\chkdsk.exe' /l
'<SYSTEM32>\find.exe' /i "path"
'<SYSTEM32>\findstr.exe' /i reg_expand_sz ~
'<SYSTEM32>\cscript.exe' //nologo "C:\combo.vbs"
'<SYSTEM32>\find.exe' "Windows XP"
'<SYSTEM32>\findstr.exe' /i /l "%systemroot%\\system32;%systemroot%;%systemroot%\\system32\\wbem C:\\WINDOWS\\system32;C:\\WINDOWS;C:\\WINDOWS\\system32\\wbem" ~
'<SYSTEM32>\findstr.exe' /m /i /f:/ update_load
'<SYSTEM32>\chcp.com'
'<SYSTEM32>\find.exe' /i "reg_expand_sz"
'<SYSTEM32>\findstr.exe' /i /l "%systemroot%\\system32\\cmd.exe C:\\WINDOWS\\system32\\cmd.exe" ~
'<SYSTEM32>\find.exe' /pid=3528
'<SYSTEM32>\find.exe' /v "*"
'<SYSTEM32>\findstr.exe' killprocess temp1.exe
'<SYSTEM32>\findstr.exe' /c handle | findstr.exe /i "[0-9].*\..\.exe"
'<SYSTEM32>\attrib.exe' "%WINDIR%\system\078?985*" /s
'<SYSTEM32>\find.exe' /v ": "
'<SYSTEM32>\findstr.exe' /pid=3816
'<SYSTEM32>\attrib.exe' "%CommonProgramFiles%\microsoft shared\web folders\ibm0*" /s
'<SYSTEM32>\find.exe' /v "- C:"
'<SYSTEM32>\find.exe' /pid=3308
'<SYSTEM32>\findstr.exe' /v /i /l /g:dll_whitelist.cf
'<SYSTEM32>\findstr.exe' /m /i /f:/ "ad-w-a-r-e NicTech"
'<SYSTEM32>\findstr.exe' /i /b /e /v /g:notifykeys.cf
'<SYSTEM32>\findstr.exe' .
'<SYSTEM32>\findstr.exe' /m /i "\>Loadu.....\>Libru" <SYSTEM32>\winlogon.exe
'<SYSTEM32>\findstr.exe' win close title "kill"
'<SYSTEM32>\findstr.exe' /pid=3276
'<SYSTEM32>\cscript.exe' -lrtf setpath.bat
'<SYSTEM32>\find.exe' /pid=3244

Injects code into

the following system processes:

<SYSTEM32>\cmd.exe
<SYSTEM32>\find.exe
<SYSTEM32>\attrib.exe
<SYSTEM32>\cscript.exe
<SYSTEM32>\findstr.exe
<SYSTEM32>\chcp.com

Modifies settings of Windows Internet Explorer:

[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] '1601' = '00000001'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] '2102' = '00000003'

Sets a new unauthorized home page for Windows Internet Explorer.

Modifies file system :

Creates the following files:

C:\ComboFix\swreg.cfexe
C:\ComboFix\nircmd.cfexe
C:\ComboFix\findcombo.vbs
C:\ComboFix\ERDNTWIN.LOC
C:\ComboFix\ERUNT.LOC
<SYSTEM32>\swxcacls.exe
%WINDIR%\catchme.exe
<SYSTEM32>\swreg.exe
%WINDIR%\nircmd.exe
<SYSTEM32>\swsc.exe
<SYSTEM32>\vfind.exe
C:\ComboFix\sed.cfexe
C:\ComboFix\setpath.cfexe
C:\ComboFix\RestartIt.cfexe
C:\ComboFix\mtee.cfexe
C:\ComboFix\Ntrights.cfexe
C:\ComboFix\SF.cfexe
C:\ComboFix\ERDNT.e_e
C:\ComboFix\ERDNTDOS.LOC
C:\ComboFix\vfind.cfexe
C:\ComboFix\swsc.cfexe
C:\ComboFix\swxcacls.cfexe
C:\ComboFix\Cfolders.cf
C:\ComboFix\borlander_file.cf
C:\ComboFix\Cfiles.cf
C:\ComboFix\miscfile.cf
C:\ComboFix\attr.cf
C:\ComboFix\borlander_folder.cf
C:\ComboFix\WowErr.cf
<DRIVERS>\PROCEXP90.SYS
C:\ComboFix\ComboFix.txt
C:\ComboFix\vundonames.cf
C:\ComboFix\zhsvc.cf
C:\ComboFix\setpath.bat
C:\ComboFix\temp00.hiv
C:\ComboFix\ErrDbg.cf
C:\ComboFix\~
C:\ComboFix\regt.cfexe
C:\ComboFix\runs.cf
C:\ComboFix\dll_whitelist.cf
C:\ComboFix\whitedir.cf
C:\ComboFix\dnd.cf
C:\ComboFix\appdatafolders.cf
C:\ComboFix.txt.bat
C:\ComboFix\Sys.bat
C:\ComboFix\nircmd.exe
C:\ComboFix\Qoo.bat
C:\ComboFix\MoveIt.bat
C:\ComboFix\NTP.bat
C:\ComboFix\ntp.exe
C:\ComboFix\bad_netsvc.cf
C:\ComboFix\Creg.cf
C:\ComboFix\ComboFix.sys
C:\ComboFix\NTPBack.exe
C:\ComboFix\swreg.exe
C:\ComboFix\CFCleanUp.bat
C:\ComboFix\Combobatch.bat
C:\ComboFix\CF_anti-viking.bat
C:\combo.vbs
C:\ComboFix\Boot.bat
C:\ComboFix\ComboFix.bat
C:\ComboFix\List-C.bat
C:\ComboFix\Look2Me.bat
C:\ComboFix\history.bat
C:\ComboFix\FIND3M.bat
C:\ComboFix\FIXLSP.bat
C:\ComboFix\WhiteLegacy.cf
C:\ComboFix\winlogondef.cf
C:\ComboFix\whitedirB.cf
C:\ComboFix\svc_wht.cf
C:\ComboFix\v_combofix.cf
C:\ComboFix\catchme.cfexe
C:\ComboFix\handle.cfexe
C:\ComboFix\moveex.cfexe
C:\ComboFix\ERUNT.cfexe
C:\ComboFix\dd.cfexe
C:\ComboFix\dumphive.cfexe
C:\ComboFix\L2M_combofix.cf
C:\ComboFix\ndis_combofix.cf
C:\ComboFix\executables.cf
C:\ComboFix\def_safeboot.cf
C:\ComboFix\erunt.cf
C:\ComboFix\net_svc.cf
C:\ComboFix\Qoo2_combofix.cf
C:\ComboFix\region.cf
C:\ComboFix\Qoo_combofix.cf
C:\ComboFix\notifykeys.cf
C:\ComboFix\puritynames.cf

Deletes the following files:

C:\ComboFix\Ntrights.cfexe
C:\ComboFix\winlogondef.cf
C:\ComboFix\findcombo.vbs
<DRIVERS>\PROCEXP90.SYS
C:\ComboFix\vundonames.cf
C:\ComboFix\ndis_combofix.cf
C:\ComboFix\Look2Me.bat
C:\ComboFix\temp00.hiv
C:\ComboFix\CF_anti-viking.bat
C:\ComboFix\~
C:\ComboFix\L2M_combofix.cf
C:\combo.vbs
C:\ComboFix\runs.cf

Miscellaneous:

Searches for the following windows:

ClassName: 'RegEdit_RegEdit' WindowName: '(null)'
ClassName: 'Shell_TrayWnd' WindowName: '(null)'
ClassName: 'EDIT' WindowName: '(null)'

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