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Trojan.DownLoader9.64332
Added to the Dr.Web virus database:
2013-08-09
Virus description added:
2014-04-29
Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
[<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce] 'GrpConv' = 'grpconv -o'
[<HKLM>\SOFTWARE\Classes\MSProgramGroup\Shell\Open\Command] '' = '<SYSTEM32>\grpconv.exe %1'
[<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce] '' = ''
[<HKLM>\SOFTWARE\Classes\comfile\shell\open\command] '' = '"%1" %*'
[<HKLM>\SOFTWARE\Classes\exefile\shell\open\command] '' = '"%1" %*'
Malicious functions:
To complicate detection of its presence in the operating system,
blocks the following features:
Creates and executes the following:
'C:\<Virus name>\grep.cfexe' -q "0C$"
'<SYSTEM32>\CF260.exe' /S /D /c" echo.0409"
'C:\<Virus name>\mtee.cfexe' NlsLang
'C:\<Virus name>\grep.cfexe' -q "0B$"
'C:\<Virus name>\grep.cfexe' -q "07$"
'C:\<Virus name>\grep.cfexe' -q "13$"
'C:\<Virus name>\grep.cfexe' -qi ".CFEXE;"
'<SYSTEM32>\CF260.exe' /S /D /c" SET pathext 2>nul"
'C:\<Virus name>\grep.cfexe' -qi "\.CFEXE;"
'C:\<Virus name>\swreg.cfexe' query "hklm\system\currentcontrolset\control\nls\language" /v installlanguage
'C:\<Virus name>\sed.cfexe' "/.*\t/!d; s///"
'C:\<Virus name>\swreg.cfexe' query "hklm\system\currentcontrolset\control\nls\codepage" /v acp
'C:\<Virus name>\grep.cfexe' -q "16$"
'C:\<Virus name>\sed.cfexe' -r "/-/!d;s/.* ([0-9]{4})-([0-9][0-9])-([0-9][0-9]) .*/(\1*365+\2*30+\3)/;s/\+0/\+/g"
'C:\<Virus name>\vfind.cfexe' -ltf kmd.dat c.bat
'C:\<Virus name>\grep.cfexe' -isq "\/u" sfx.cmd
'C:\<Virus name>\nircmd.com' qboxcom "There's a newer version of ComboFix available.~n~nWould you like to update ComboFix?" "Update" returnval 1
'C:\<Virus name>\ComboFix-Download.exe' http://www.fo###pyware.com/sUBs/version.txt .\ /delete
'<SYSTEM32>\CF260.exe' /S /D /c" ( echo.367 http://do######.bleepingcomputer.com/sUBs/ & echo.2608 http://su##.#eekstogo.com/ & echo.22969 http://www.fo###pyware.com/sUBs/ )"
'C:\<Virus name>\grep.cfexe' -q "0A$"
'C:\<Virus name>\grep.cfexe' -q "10$"
'C:\<Virus name>\grep.cfexe' -q "04$"
'C:\<Virus name>\grep.cfexe' -sq \\ ForeignA.dat
'C:\<Virus name>\sed.cfexe' -r "1d; /\t$/!d; s/.*\t(.:\\.*)\t.*/\1/;"
'C:\<Virus name>\pv.cfexe' -m CF260.exe -q -e
'C:\327882R2FWJFW\swreg.exe' add "hklm\software\microsoft\windows\currentversion\app paths\combofix.exe" /ve /d "<Full path to virus>"
'C:\327882R2FWJFW\NirCmd.cfexe' win close ititle "ComboFix"
'C:\327882R2FWJFW\NirCmd.cfexe' win close class "#32770"
'C:\327882R2FWJFW\swxcacls.cfexe' "<SYSTEM32>\cmd.exe" /OA /Q
'C:\327882R2FWJFW\Attrib.cfexe' +r "C:\327882R2FWJFW\*.com"
'C:\327882R2FWJFW\Attrib.cfexe' +r "C:\327882R2FWJFW\*.cfexe"
'C:\327882R2FWJFW\swreg.exe' acl "hklm\software\microsoft\windows nt\currentversion\windows" /de:f /q
'C:\327882R2FWJFW\nircmd.com' exec hide 327882R2FWJFW\SWREG.exe acl "hklm\software\microsoft\windows nt\currentversion\windows" /de:f /q
'C:\327882R2FWJFW\nircmd.com' shexec install 327882R2FWJFW\nircmd.inf
'C:\327882R2FWJFW\sed.cfexe' "/\t.*\\nircmd\.inf$/!d; s///; s/./@pv -kfi &/"
'C:\327882R2FWJFW\pv.cfexe' -o"%i\t%l"
'C:\327882R2FWJFW\nircmd.com' exec hide 327882R2FWJFW\prep.cmd >Bug.txt
'C:\327882R2FWJFW\swxcacls.cfexe' "<SYSTEM32>\cmd.exe" /P /GA:F /GS:F /GP:X /GU:X /Q
'C:\327882R2FWJFW\NirCmd.cfexe' execmd del "\327882R2FWJFW\prep.cmd"
'<SYSTEM32>\CF260.exe' /f:off /d /c call Start_.cmd
'C:\327882R2FWJFW\NirCmd.cfexe' exec hide "<SYSTEM32>\CF260.exe" /f:off /d /c call Start_.cmd
'<SYSTEM32>\CF260.exe' /S /D /c" echo..cfexe;.COM;.EXE;.BAT;.CMD;.VBS;.VBE;.JS;.JSE;.WSF;.WSH"
'<SYSTEM32>\CF260.exe' /S /D /c" ver"
'<SYSTEM32>\CF260.exe' /k c.bat
'C:\327882R2FWJFW\swreg.cfexe' acl "hklm\software\microsoft\windows nt\currentversion\windows" /re:f /q
'<SYSTEM32>\CF260.exe' /S /D /c" DIR /ad/b C:\* "
'C:\327882R2FWJFW\grep.cfexe' -isqx "FileName=[-[:alnum:]@.]*" FileName
'C:\327882R2FWJFW\swreg.cfexe' acl "hklm\software\microsoft\windows nt\currentversion\windows" /de:f /q
'C:\327882R2FWJFW\swreg.cfexe' query "hklm\software\microsoft\windows nt\currentversion\windows"
'C:\327882R2FWJFW\grep.cfexe' -sq "currentversion.* 6.0" osVer00
Executes the following:
'<SYSTEM32>\chcp.com' 1251
'<SYSTEM32>\findstr.exe' -LIXC:"<Virus name>" dirname00
'<SYSTEM32>\findstr.exe' -IVX ComboFix
'<SYSTEM32>\sort.exe'
'<SYSTEM32>\ping.exe' -n 2 google.com
'<SYSTEM32>\findstr.exe' -IV "\\detoured\.dll"
'<SYSTEM32>\find.exe' "Windows XP"
'<SYSTEM32>\cmd.exe' /c 327882R2FWJFW\prep.cmd >Bug.txt
'<SYSTEM32>\rundll32.exe' setupapi,InstallHinfSection DefaultInstall 132 C:\327882R2FWJFW\nircmd.inf
'%WINDIR%\regedit.exe' /s 327882R2FWJFW\EXE.reg
'<SYSTEM32>\grpconv.exe' -o
'<SYSTEM32>\find.exe' "Microsoft Windows [Version 5.2.3790]"
'<SYSTEM32>\runonce.exe' -r
Modifies file system :
Creates the following files:
Deletes the following files:
C:\<Virus name>\lang00
C:\<Virus name>\Lang01
C:\<Virus name>\temp00
C:\Start_.cmd
C:\327882R2FWJFW\NirCmd.inf
C:\327882R2FWJFW\FileName
C:\327882R2FWJFW\dirname00
Moves the following files:
Network activity:
Connects to:
TCP:
HTTP GET requests:
www.fo###pyware.com/sUBs/version.txt
UDP:
DNS ASK www.fo###pyware.com
DNS ASK google.com
Miscellaneous:
Searches for the following windows:
ClassName: 'RegEdit_RegEdit' WindowName: '(null)'
ClassName: 'Shell_TrayWnd' WindowName: '(null)'
ClassName: 'EDIT' WindowName: '(null)'
Curing recommendations
Windows
macOS
Linux
Android
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 .
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.
Use Dr.Web Anti-virus for macOS to run a full scan of your Mac.
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.
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
Descargue Dr.Web para Android
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