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Trojan.KeyLogger.25331

Added to the Dr.Web virus database: 2014-06-28

Virus description added:

Technical Information

To ensure autorun and distribution:
Modifies the following registry keys:
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'Netcafe Client' = '%PROGRAM_FILES%\Netcafe Client\\NetcafeClient.exe'
Malicious functions:
To bypass firewall, removes or modifies the following registry keys:
  • [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '%PROGRAM_FILES%\Netcafe Client\updater.exe' = '%PROGRAM_FILES%\Netcafe Client\updater.exe:*:Enabled:Netcafe Client Update'
  • [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '%PROGRAM_FILES%\Netcafe Client\rclient.exe' = '%PROGRAM_FILES%\Netcafe Client\rclient.exe:*:Enabled:Netcafe Remote'
  • [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '%PROGRAM_FILES%\Netcafe Client\NetcafeClient.exe' = '%PROGRAM_FILES%\Netcafe Client\NetcafeClient.exe:*:Enabled:NetcafeClient'
  • [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '%PROGRAM_FILES%\Netcafe Client\NcGame\NcGameClient.exe' = '%PROGRAM_FILES%\Netcafe Client\NcGame\NcGameClient.exe:*:Enabled:Netcafe games update'
To complicate detection of its presence in the operating system,
blocks execution of the following system utilities:
  • Windows Task Manager (Taskmgr)
  • Registry Editor (RegEdit)
Creates and executes the following:
  • '%PROGRAM_FILES%\Netcafe Client\NetcafeClient.exe'
Executes the following:
  • '%WINDIR%\Microsoft.NET\Framework\v4.0.30319\mscorsvw.exe' -UseCLSID {6770507D-6472-40B3-B647-8CF581538B56} -Comment "NGen Worker Process"
  • '%WINDIR%\Microsoft.NET\Framework\v4.0.30319\ngen.exe' install "%PROGRAM_FILES%\Netcafe Client\NetcafeClient.exe" /ExeConfig:"%PROGRAM_FILES%\Netcafe Client\NetcafeClient.exe"
  • '<SYSTEM32>\msiexec.exe' -Embedding F8C227CF85B28EDBA5D7549A71854203 M Global\MSI0000
  • '%WINDIR%\Microsoft.NET\Framework\v4.0.30319\mscorsvw.exe' -UseCLSID {CE238E5F-C990-4ECF-8BB2-C996264CAAB7} -Comment "NGen Worker Process"
  • '%WINDIR%\Microsoft.NET\Framework\v4.0.30319\mscorsvw.exe' -UseCLSID {B6C67236-E55E-460E-A05C-D009DBFAD3B4} -Comment "NGen Worker Process"
  • '%WINDIR%\Microsoft.NET\Framework\v4.0.30319\mscorsvw.exe' -UseCLSID {F010076E-7F37-4180-A8FD-71F4470D7F2C} -Comment "NGen Worker Process"
  • '%WINDIR%\Microsoft.NET\Framework\v4.0.30319\ngen.exe' install "%PROGRAM_FILES%\Netcafe Client\NcGame\NcGameClient.exe" /ExeConfig:"%PROGRAM_FILES%\Netcafe Client\NcGame\NcGameClient.exe"
  • '<SYSTEM32>\msiexec.exe' -Embedding 63F5B63CDC6E6FA129760EA481179F17
  • '<SYSTEM32>\msiexec.exe' /V
  • '<SYSTEM32>\msiexec.exe'
  • '<SYSTEM32>\msiexec.exe' /Y "<SYSTEM32>\bsFileClient.dll"
  • '<SYSTEM32>\msiexec.exe' /Y "<SYSTEM32>\flash10\Flash10h.ocx"
  • '<SYSTEM32>\msiexec.exe' /Y "<SYSTEM32>\bsFileServer.dll"
  • '<SYSTEM32>\msiexec.exe' /Y "<SYSTEM32>\AutoItX3.dll"
Injects code into
the following system processes:
  • <SYSTEM32>\winlogon.exe
Installs hooks to intercept notifications
on keystrokes:
  • Handler for all processes: %PROGRAM_FILES%\Netcafe Client\WinLockDll.dll
Modifies settings of Windows Explorer:
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer] 'DisAllowRun' = '00000001'
Sets a new unauthorized home page for Windows Internet Explorer.
Modifies file system :
Creates the following files:
  • %WINDIR%\assembly\tmp\KE35UR6A\Interop.bsFileClientSDK.dll
  • %WINDIR%\assembly\tmp\1SWCVG07\Interop.SHDocVw.dll
  • %WINDIR%\assembly\tmp\O1QOGSO0\ICSharpCode.SharpZipLib.dll
  • %WINDIR%\assembly\tmp\UYTA0ZJG\AxInterop.ShockwaveFlashObjects.dll
  • %PROGRAM_FILES%\Netcafe Client\DFM.exe
  • %WINDIR%\assembly\tmp\YCPDEADO\Interop.ShockwaveFlashObjects.dll
  • %PROGRAM_FILES%\Netcafe Client\WinLockDll.dll
  • <SYSTEM32>\bsFileClient.dll
  • %PROGRAM_FILES%\Netcafe Client\UpdateTool.exe
  • %PROGRAM_FILES%\Netcafe Client\NcKall.exe
  • %PROGRAM_FILES%\Netcafe Client\rclient.exe
  • %WINDIR%\assembly\tmp\UC27GI1J\AxInterop.Microsoft.Vbe.Interop.Forms.dll
  • C:\System Volume Information\_restore{E7F0F64C-F7E5-4319-8757-E9A20C1C4E14}\RP16\snapshot\Repository\FS\MAPPING2.MAP
  • C:\System Volume Information\_restore{E7F0F64C-F7E5-4319-8757-E9A20C1C4E14}\RP16\snapshot\Repository\FS\OBJECTS.DATA
  • %WINDIR%\Installer\MSI2.tmp
  • C:\System Volume Information\_restore{E7F0F64C-F7E5-4319-8757-E9A20C1C4E14}\RP16\snapshot\Repository\FS\MAPPING.VER
  • C:\System Volume Information\_restore{E7F0F64C-F7E5-4319-8757-E9A20C1C4E14}\RP16\snapshot\Repository\FS\MAPPING1.MAP
  • %WINDIR%\Installer\MSI3.tmp
  • C:\Config.Msi\2d9a0.rbs
  • %PROGRAM_FILES%\Netcafe Client\NetcafeClient.exe
  • %WINDIR%\Installer\MSI4.tmp
  • C:\System Volume Information\_restore{E7F0F64C-F7E5-4319-8757-E9A20C1C4E14}\RP16\snapshot\Repository\FS\OBJECTS.MAP
  • C:\System Volume Information\_restore{E7F0F64C-F7E5-4319-8757-E9A20C1C4E14}\RP16\RestorePointSize
  • %WINDIR%\assembly\NativeImages_v2.0.50727_32\Temp\ZAPA.tmp\NetcafeClient.exe
  • %TEMP%\tmpB.tmp
  • %TEMP%\tmp9.tmp
  • %WINDIR%\Installer\MSI7.tmp
  • %WINDIR%\Installer\MSI8.tmp
  • %WINDIR%\assembly\NativeImages_v2.0.50727_32\Temp\ZAPC.tmp\NcGameClient.exe
  • %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\U98D4X8H\middle9[1].php
  • %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\2VAZY7AN\top9[1].php
  • %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\KHMHGZ4F\intro[1].swf
  • %PROGRAM_FILES%\Netcafe Client\Update.exe
  • %APPDATA%\Macromedia\Flash Player\macromedia.com\support\flashplayer\sys\settings.sxx
  • %WINDIR%\Installer\MSI6.tmp
  • %PROGRAM_FILES%\Netcafe Client\updater.exe
  • %WINDIR%\assembly\tmp\O1QW0B24\Interop.bsFileServerSDK.dll
  • <SYSTEM32>\bsFileServer.dll
  • %WINDIR%\assembly\tmp\GQ11WS7H\Interop.AutoItX3Lib.dll
  • <SYSTEM32>\AutoItX3.dll
  • %WINDIR%\assembly\tmp\RY00ZFYC\Interop.IWshRuntimeLibrary.dll
  • %ALLUSERSPROFILE%\Desktop\Netcafe Client.lnk
  • %PROGRAM_FILES%\Netcafe Client\updater.ini
  • %ALLUSERSPROFILE%\Start Menu\Programs\Netcafe Client\Netcafe Client.lnk
  • %PROGRAM_FILES%\Netcafe Client\NcGame\NcGameClient.exe
  • <SYSTEM32>\flash10\Flash10h.ocx
  • C:\System Volume Information\_restore{E7F0F64C-F7E5-4319-8757-E9A20C1C4E14}\RP16\snapshot\Repository\FS\INDEX.MAP
  • %APPDATA%\24h\Netcafe Client\install\C06C568\Interop.AutoItX3Lib.dll
  • %APPDATA%\24h\Netcafe Client\install\C06C568\Interop.bsFileClientSDK.dll
  • %APPDATA%\24h\Netcafe Client\install\C06C568\ICSharpCode.SharpZipLib.dll
  • %APPDATA%\24h\Netcafe Client\install\C06C568\WindowsFolder\System32\bsFileClient.dll
  • %APPDATA%\24h\Netcafe Client\install\C06C568\WindowsFolder\System32\bsFileServer.dll
  • %APPDATA%\24h\Netcafe Client\install\C06C568\NcGame\Interop.bsFileServerSDK.dll
  • %APPDATA%\24h\Netcafe Client\install\C06C568\WinLockDll.dll
  • %APPDATA%\24h\Netcafe Client\install\C06C568\WindowsFolder\System32\flash10\Flash10h.ocx
  • %APPDATA%\24h\Netcafe Client\install\C06C568\Interop.ShockwaveFlashObjects.dll
  • %APPDATA%\24h\Netcafe Client\install\C06C568\NcGame\Interop.IWshRuntimeLibrary.dll
  • %APPDATA%\24h\Netcafe Client\install\C06C568\Interop.SHDocVw.dll
  • %APPDATA%\24h\Netcafe Client\install\C06C568\AxInterop.ShockwaveFlashObjects.dll
  • %APPDATA%\24h\Netcafe Client\install\C06C568\NcGame\NcGameClient.exe
  • %APPDATA%\24h\Netcafe Client\install\C06C568\NcKall.exe
  • %APPDATA%\24h\Netcafe Client\install\C06C568\DFM.exe
  • %APPDATA%\24h\Netcafe Client\install\decoder.dll
  • %APPDATA%\24h\Netcafe Client\install\C06C568\WindowsFolder\System32\drivers\etc\hosts
  • %APPDATA%\24h\Netcafe Client\install\C06C568\NetcafeClient.exe
  • %APPDATA%\24h\Netcafe Client\install\C06C568\WindowsFolder\System32\AutoItX3.dll
  • %APPDATA%\24h\Netcafe Client\install\C06C568\AxInterop.Microsoft.Vbe.Interop.Forms.dll
  • %APPDATA%\24h\Netcafe Client\install\C06C568\UpdateTool.exe
  • %APPDATA%\24h\Netcafe Client\install\C06C568\rclient.exe
  • %APPDATA%\24h\Netcafe Client\install\C06C568\updater.exe
  • C:\System Volume Information\_restore{E7F0F64C-F7E5-4319-8757-E9A20C1C4E14}\RP16\snapshot\_REGISTRY_MACHINE_SYSTEM
  • C:\System Volume Information\_restore{E7F0F64C-F7E5-4319-8757-E9A20C1C4E14}\RP16\snapshot\_REGISTRY_MACHINE_SAM
  • C:\System Volume Information\_restore{E7F0F64C-F7E5-4319-8757-E9A20C1C4E14}\RP16\snapshot\_REGISTRY_MACHINE_SOFTWARE
  • C:\System Volume Information\_restore{E7F0F64C-F7E5-4319-8757-E9A20C1C4E14}\RP16\snapshot\_REGISTRY_USER_.DEFAULT
  • C:\System Volume Information\_restore{E7F0F64C-F7E5-4319-8757-E9A20C1C4E14}\RP16\snapshot\_REGISTRY_MACHINE_SECURITY
  • C:\System Volume Information\_restore{E7F0F64C-F7E5-4319-8757-E9A20C1C4E14}\RP16\snapshot\ComDb.Dat
  • C:\System Volume Information\_restore{E7F0F64C-F7E5-4319-8757-E9A20C1C4E14}\RP16\snapshot\Repository\$WinMgmt.CFG
  • C:\System Volume Information\_restore{E7F0F64C-F7E5-4319-8757-E9A20C1C4E14}\RP16\snapshot\Repository\FS\INDEX.BTR
  • C:\System Volume Information\_restore{E7F0F64C-F7E5-4319-8757-E9A20C1C4E14}\RP15\drivetable.txt
  • C:\System Volume Information\_restore{E7F0F64C-F7E5-4319-8757-E9A20C1C4E14}\RP16\snapshot\domain.txt
  • C:\System Volume Information\_restore{E7F0F64C-F7E5-4319-8757-E9A20C1C4E14}\drivetable.txt
  • C:\System Volume Information\_restore{E7F0F64C-F7E5-4319-8757-E9A20C1C4E14}\RP16\snapshot\_REGISTRY_USER_USRCLASS_S-1-5-21-2052111302-484763869-725345543-1003
  • %WINDIR%\Installer\MSI1.tmp
  • C:\System Volume Information\_restore{E7F0F64C-F7E5-4319-8757-E9A20C1C4E14}\RP16\rp.log
  • %WINDIR%\Installer\2d99d.msi
  • %APPDATA%\24h\Netcafe Client\install\C06C568\Netcafe Client Path 9 - cache.msi
  • %TEMP%\2c440.msi
  • C:\System Volume Information\_restore{E7F0F64C-F7E5-4319-8757-E9A20C1C4E14}\RP16\snapshot\_REGISTRY_USER_NTUSER_S-1-5-18
  • C:\System Volume Information\_restore{E7F0F64C-F7E5-4319-8757-E9A20C1C4E14}\RP16\snapshot\_REGISTRY_USER_USRCLASS_S-1-5-20
  • C:\System Volume Information\_restore{E7F0F64C-F7E5-4319-8757-E9A20C1C4E14}\RP16\snapshot\_REGISTRY_USER_NTUSER_S-1-5-21-2052111302-484763869-725345543-1003
  • C:\System Volume Information\_restore{E7F0F64C-F7E5-4319-8757-E9A20C1C4E14}\RP16\snapshot\_REGISTRY_USER_NTUSER_S-1-5-20
  • C:\System Volume Information\_restore{E7F0F64C-F7E5-4319-8757-E9A20C1C4E14}\RP16\snapshot\_REGISTRY_USER_NTUSER_S-1-5-19
  • C:\System Volume Information\_restore{E7F0F64C-F7E5-4319-8757-E9A20C1C4E14}\RP16\snapshot\_REGISTRY_USER_USRCLASS_S-1-5-19
Deletes the following files:
  • %APPDATA%\24h\Netcafe Client\install\C06C568\NcKall.exe
  • %APPDATA%\24h\Netcafe Client\install\C06C568\NcGame\NcGameClient.exe
  • %APPDATA%\24h\Netcafe Client\install\C06C568\rclient.exe
  • %APPDATA%\24h\Netcafe Client\install\C06C568\NetcafeClient.exe
  • %APPDATA%\24h\Netcafe Client\install\C06C568\NcGame\Interop.IWshRuntimeLibrary.dll
  • %APPDATA%\24h\Netcafe Client\install\C06C568\Interop.SHDocVw.dll
  • %APPDATA%\24h\Netcafe Client\install\C06C568\Interop.bsFileClientSDK.dll
  • %APPDATA%\24h\Netcafe Client\install\C06C568\NcGame\Interop.bsFileServerSDK.dll
  • %APPDATA%\24h\Netcafe Client\install\C06C568\Interop.ShockwaveFlashObjects.dll
  • %APPDATA%\24h\Netcafe Client\install\C06C568\updater.exe
  • %APPDATA%\24h\Netcafe Client\install\C06C568\WinLockDll.dll
  • %APPDATA%\24h\Netcafe Client\install\C06C568\WindowsFolder\System32\flash10\Flash10h.ocx
  • %APPDATA%\Macromedia\Flash Player\macromedia.com\support\flashplayer\sys\settings.sol
  • %PROGRAM_FILES%\Netcafe Client\UpdateTool.exe
  • %APPDATA%\24h\Netcafe Client\install\C06C568\WindowsFolder\System32\drivers\etc\hosts
  • %APPDATA%\24h\Netcafe Client\install\C06C568\WindowsFolder\System32\AutoItX3.dll
  • %APPDATA%\24h\Netcafe Client\install\C06C568\UpdateTool.exe
  • %APPDATA%\24h\Netcafe Client\install\C06C568\WindowsFolder\System32\bsFileServer.dll
  • %APPDATA%\24h\Netcafe Client\install\C06C568\WindowsFolder\System32\bsFileClient.dll
  • %APPDATA%\24h\Netcafe Client\install\C06C568\Interop.AutoItX3Lib.dll
  • %WINDIR%\assembly\NativeImages_v2.0.50727_32\indexa6.dat
  • %WINDIR%\assembly\NativeImages_v2.0.50727_32\indexa5.dat
  • %WINDIR%\Installer\MSI2.tmp
  • %WINDIR%\Installer\MSI8.tmp
  • %WINDIR%\Installer\MSI7.tmp
  • %WINDIR%\Installer\MSI3.tmp
  • %WINDIR%\Installer\MSI1.tmp
  • %WINDIR%\Installer\MSI6.tmp
  • %WINDIR%\Installer\MSI4.tmp
  • C:\Config.Msi\2d9a1.rbf
  • %APPDATA%\24h\Netcafe Client\install\C06C568\AxInterop.ShockwaveFlashObjects.dll
  • %APPDATA%\24h\Netcafe Client\install\C06C568\AxInterop.Microsoft.Vbe.Interop.Forms.dll
  • %APPDATA%\24h\Netcafe Client\install\C06C568\ICSharpCode.SharpZipLib.dll
  • %APPDATA%\24h\Netcafe Client\install\C06C568\DFM.exe
  • %APPDATA%\24h\Netcafe Client\install\C06C568\Netcafe Client Path 9 - cache.msi
  • %WINDIR%\Installer\2d99d.msi
  • C:\Config.Msi\2d9a0.rbs
  • %APPDATA%\24h\Netcafe Client\install\decoder.dll
  • %TEMP%\2c440.msi
Moves the following system files:
  • from <DRIVERS>\etc\hosts to C:\Config.Msi\2d9a1.rbf
Moves the following files:
  • from %APPDATA%\Macromedia\Flash Player\macromedia.com\support\flashplayer\sys\settings.sxx to %APPDATA%\Macromedia\Flash Player\macromedia.com\support\flashplayer\sys\settings.sol
  • from %WINDIR%\assembly\NativeImages_v2.0.50727_32\Temp\ZAPC.tmp\NcGameClient.exe to %WINDIR%\assembly\NativeImages_v2.0.50727_32\NcGameClient\b8a6151775ea92e70f8fd62f031c3854\NcGameClient.ni.exe
  • from %WINDIR%\assembly\NativeImages_v2.0.50727_32\Temp\ZAPA.tmp\NetcafeClient.exe to %WINDIR%\assembly\NativeImages_v2.0.50727_32\NetcafeClient\f1770a39d9ea3c954fba3175db6b8927\NetcafeClient.ni.exe
Substitutes the HOSTS file.
Network activity:
Connects to:
  • 'ne####e.24h.com.vn':80
  • 'ne####e7.24h.com.vn':80
  • '<Private IP address>':2223
  • 'localhost':1041
TCP:
HTTP GET requests:
  • ne####e7.24h.com.vn/Netcafe9/ads/top9.php
  • ne####e7.24h.com.vn/Netcafe9/ads/middle9.php
  • ne####e.24h.com.vn/netcafe/banner/intro.swf
UDP:
  • DNS ASK ne####e7.24h.com.vn
  • DNS ASK ne####e.24h.com.vn
Miscellaneous:
Searches for the following windows:
  • ClassName: 'MS_WebcheckMonitor' WindowName: '(null)'
  • ClassName: 'SAS Window class' WindowName: 'SAS window'
  • ClassName: 'MS_AutodialMonitor' WindowName: '(null)'
  • ClassName: 'Shell_TrayWnd' WindowName: '(null)'
  • ClassName: 'MS_WINHELP' WindowName: '(null)'

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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:
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