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Trojan.Hosts.51300
Added to the Dr.Web virus database:
2023-06-30
Virus description added:
2024-03-30
Technical Information
To ensure autorun and distribution
Creates or modifies the following files
<SYSTEM32>\tasks\microsoft\windows\windowsbackup\realtekcheck
<SYSTEM32>\tasks\microsoft\windows\windowsbackup\winlogoncheck
<SYSTEM32>\tasks\microsoft\windows\windowsbackup\onlogoncheck
<SYSTEM32>\tasks\microsoft\windows\windowsbackup\taskcheck
Malicious functions
Creates and executes a large number of processes from analysed file.
Searches for windows to
detect analytical utilities:
ClassName: 'FilemonClass', WindowName: ''
ClassName: 'PROCMON_WINDOW_CLASS', WindowName: ''
ClassName: 'RegmonClass', WindowName: ''
Modifies file system
Creates the following files
%TEMP%\aut6892.tmp
%TEMP%\autb0c9.tmp
%ALLUSERSPROFILE%\microsoft\temp\h.bat
%CommonProgramFiles%\system\iediagcmd.exe
Deletes the following files
%TEMP%\aut6892.tmp
%TEMP%\autb0c9.tmp
Modifies the HOSTS file.
Miscellaneous
Searches for the following windows
ClassName: 'File Monitor - Sysinternals: www.sysinternals.com' WindowName: ''
ClassName: 'Process Monitor - Sysinternals: www.sysinternals.com' WindowName: ''
ClassName: 'Registry Monitor - Sysinternals: www.sysinternals.com' WindowName: ''
ClassName: '18467-41' WindowName: ''
Creates and executes the following
'<SYSTEM32>\schtasks.exe' /create /TN "Microsoft\Windows\WindowsBackup\RealtekCheck" /TR "%ALLUSERSPROFILE%\RealtekHD\taskhost.exe" /SC MINUTE /MO 1 /RL HIGHEST' (with hidden window)
'<SYSTEM32>\cmd.exe' /c icacls "%ProgramFiles%\Loaris Trojan Remover" /deny %username%:(OI)(CI)(F)' (with hidden window)
'<SYSTEM32>\cmd.exe' /c icacls "%ProgramFiles%\Rainmeter" /deny %username%:(OI)(CI)(F)' (with hidden window)
'<SYSTEM32>\cmd.exe' /c icacls "%CommonProgramFiles%\McAfee" /deny %username%:(OI)(CI)(F)' (with hidden window)
'<SYSTEM32>\cmd.exe' /c icacls "%ALLUSERSPROFILE%\McAfee" /deny %username%:(OI)(CI)(F)' (with hidden window)
'<SYSTEM32>\cmd.exe' /c icacls "%ProgramFiles%\Cezurity" /deny %username%:(OI)(CI)(F)' (with hidden window)
'<SYSTEM32>\cmd.exe' /c icacls "%ProgramFiles(x86)%\Cezurity" /deny %username%:(OI)(CI)(F)' (with hidden window)
'<SYSTEM32>\cmd.exe' /c icacls "%ALLUSERSPROFILE%\grizzly" /deny %username%:(OI)(CI)(F)' (with hidden window)
'<SYSTEM32>\cmd.exe' /c icacls "%ALLUSERSPROFILE%\Doctor Web" /deny %username%:(OI)(CI)(F)' (with hidden window)
'<SYSTEM32>\cmd.exe' /c icacls "%CommonProgramFiles%\AV" /deny system:(OI)(CI)(F)' (with hidden window)
'<SYSTEM32>\cmd.exe' /c icacls "%CommonProgramFiles%\Doctor Web" /deny system:(OI)(CI)(F)' (with hidden window)
'<SYSTEM32>\cmd.exe' /c icacls "%ProgramFiles(x86)%\GRIZZLY Antivirus" /deny %username%:(OI)(CI)(F)' (with hidden window)
'<SYSTEM32>\cmd.exe' /c icacls "%CommonProgramFiles%\Doctor Web" /deny %username%:(OI)(CI)(F)' (with hidden window)
'<SYSTEM32>\cmd.exe' /c icacls "%ProgramFiles%\DrWeb" /deny system:(OI)(CI)(F)' (with hidden window)
'<SYSTEM32>\cmd.exe' /c icacls "%ProgramFiles%\DrWeb" /deny %username%:(OI)(CI)(F)' (with hidden window)
'<SYSTEM32>\cmd.exe' /c icacls "%ProgramFiles%\Bitdefender Agent" /deny system:(OI)(CI)(F)' (with hidden window)
'<SYSTEM32>\cmd.exe' /c icacls "%ProgramFiles%\Bitdefender Agent" /deny %username%:(OI)(CI)(F)' (with hidden window)
'<SYSTEM32>\cmd.exe' /c icacls "%ProgramFiles(x86)%\Kaspersky Lab" /deny system:(OI)(CI)(F)' (with hidden window)
'<SYSTEM32>\cmd.exe' /c icacls "%ProgramFiles(x86)%\Kaspersky Lab" /deny %username%:(OI)(CI)(F)' (with hidden window)
'<SYSTEM32>\cmd.exe' /c icacls "%ProgramFiles%\Kaspersky Lab" /deny system:(OI)(CI)(F)' (with hidden window)
'<SYSTEM32>\cmd.exe' /c icacls "%CommonProgramFiles%\AV" /deny %username%:(OI)(CI)(F)' (with hidden window)
'<SYSTEM32>\cmd.exe' /c icacls "%ProgramFiles%\Malwarebytes" /deny %username%:(OI)(CI)(F)' (with hidden window)
'<SYSTEM32>\cmd.exe' /c icacls "%ProgramFiles%\ESET" /deny %username%:(OI)(CI)(F)' (with hidden window)
'<SYSTEM32>\cmd.exe' /c icacls "%ProgramFiles(x86)%\IObit\Advanced SystemCare" /deny %username%:(OI)(CI)(F)' (with hidden window)
'<SYSTEM32>\cmd.exe' /c icacls "%ProgramFiles(x86)%\Panda Security" /deny %username%:(OI)(CI)(F)' (with hidden window)
'<SYSTEM32>\cmd.exe' /c icacls "%ALLUSERSPROFILE%\BookManager" /deny system:(OI)(CI)(F)' (with hidden window)
'<SYSTEM32>\cmd.exe' /c icacls "%ALLUSERSPROFILE%\BookManager" /deny %username%:(OI)(CI)(F)' (with hidden window)
'<SYSTEM32>\cmd.exe' /c icacls "%ALLUSERSPROFILE%\FingerPrint" /deny system:(OI)(CI)(F)' (with hidden window)
'<SYSTEM32>\cmd.exe' /c icacls "%ALLUSERSPROFILE%\FingerPrint" /deny %username%:(OI)(CI)(F)' (with hidden window)
'<SYSTEM32>\cmd.exe' /c icacls "%ALLUSERSPROFILE%\ESET" /deny system:(OI)(CI)(F)' (with hidden window)
'<SYSTEM32>\cmd.exe' /c icacls "%ALLUSERSPROFILE%\ESET" /deny %username%:(OI)(CI)(F)' (with hidden window)
'<SYSTEM32>\cmd.exe' /c icacls "%ALLUSERSPROFILE%\PuzzleMedia" /deny system:(OI)(CI)(F)' (with hidden window)
'<SYSTEM32>\cmd.exe' /c icacls "%ProgramFiles%\Kaspersky Lab" /deny %username%:(OI)(CI)(F)' (with hidden window)
'<SYSTEM32>\cmd.exe' /c icacls "%ALLUSERSPROFILE%\Avira" /deny %username%:(OI)(CI)(F)' (with hidden window)
'<SYSTEM32>\cmd.exe' /c icacls "%ALLUSERSPROFILE%\RobotDemo" /deny %username%:(OI)(CI)(F)' (with hidden window)
'<SYSTEM32>\cmd.exe' /c icacls "%ALLUSERSPROFILE%\WavePad" /deny system:(OI)(CI)(F)' (with hidden window)
'<SYSTEM32>\cmd.exe' /c icacls "%ALLUSERSPROFILE%\WavePad" /deny %username%:(OI)(CI)(F)' (with hidden window)
'<SYSTEM32>\cmd.exe' /c icacls "%ALLUSERSPROFILE%\Evernote" /deny system:(OI)(CI)(F)' (with hidden window)
'<SYSTEM32>\cmd.exe' /c icacls "%ALLUSERSPROFILE%\Evernote" /deny %username%:(OI)(CI)(F)' (with hidden window)
'<SYSTEM32>\cmd.exe' /c icacls "%ProgramFiles%\Ravantivirus" /deny system:(OI)(CI)(F)' (with hidden window)
'<SYSTEM32>\cmd.exe' /c icacls "%ProgramFiles%\Ravantivirus" /deny %username%:(OI)(CI)(F)' (with hidden window)
'<SYSTEM32>\cmd.exe' /c icacls "%ProgramFiles%\Process Lasso" /deny system:(OI)(CI)(F)' (with hidden window)
'<SYSTEM32>\cmd.exe' /c icacls "%ProgramFiles%\Process Lasso" /deny %username%:(OI)(CI)(F)' (with hidden window)
'<SYSTEM32>\cmd.exe' /c icacls "%ALLUSERSPROFILE%\RobotDemo" /deny system:(OI)(CI)(F)' (with hidden window)
'<SYSTEM32>\cmd.exe' /c icacls "%ProgramFiles%\ESET" /deny system:(OI)(CI)(F)' (with hidden window)
'<SYSTEM32>\cmd.exe' /c icacls "%ALLUSERSPROFILE%\Kaspersky Lab" /deny system:(OI)(CI)(F)' (with hidden window)
'<SYSTEM32>\cmd.exe' /c icacls "%ALLUSERSPROFILE%\Kaspersky Lab" /deny %username%:(OI)(CI)(F)' (with hidden window)
'<SYSTEM32>\cmd.exe' /c icacls "%ALLUSERSPROFILE%\Kaspersky Lab Setup Files" /deny system:(OI)(CI)(F)' (with hidden window)
'<SYSTEM32>\cmd.exe' /c icacls "%ALLUSERSPROFILE%\microsoft\clr_optimization_v4.0.30318_64" /deny System:(OI)(CI)(F)' (with hidden window)
'<SYSTEM32>\cmd.exe' /c icacls %ALLUSERSPROFILE%\MB3Install /deny %username%:(F)' (with hidden window)
'<SYSTEM32>\cmd.exe' /c icacls %ALLUSERSPROFILE%\Malwarebytes /deny System:(F)' (with hidden window)
'<SYSTEM32>\cmd.exe' /c icacls %WINDIR%\speechstracing /deny system:(OI)(CI)(F)' (with hidden window)
'<SYSTEM32>\cmd.exe' /c icacls %ALLUSERSPROFILE%\Malwarebytes /deny %username%:(F)' (with hidden window)
'<SYSTEM32>\cmd.exe' /c icacls %WINDIR%\speechstracing /deny %username%:(OI)(CI)(F)' (with hidden window)
'<SYSTEM32>\cmd.exe' /c icacls "%ProgramFiles%\Internet Explorer\bin" /deny %username%:(OI)(CI)(F)' (with hidden window)
'<SYSTEM32>\cmd.exe' /c icacls "%ProgramFiles%\Internet Explorer\bin" /deny system:(OI)(CI)(F)' (with hidden window)
'<SYSTEM32>\cmd.exe' /c icacls "%WINDIR%\Fonts\Mysql" /deny System:(OI)(CI)(F)' (with hidden window)
'<SYSTEM32>\cmd.exe' /c icacls "%ProgramFiles(x86)%\IObit\IObit Malware Fighter" /deny %username%:(OI)(CI)(F)' (with hidden window)
'<SYSTEM32>\cmd.exe' /c icacls %ALLUSERSPROFILE%\Indus /deny %username%:(OI)(CI)(F)' (with hidden window)
'<SYSTEM32>\cmd.exe' /c icacls "%ALLUSERSPROFILE%\microsoft\clr_optimization_v4.0.30318_64" /deny %username%:(OI)(CI)(F)' (with hidden window)
'<SYSTEM32>\cmd.exe' /c icacls "%CommonProgramFiles%\System\iediagcmd.exe" /deny %username%:(OI)(CI)(F)' (with hidden window)
'<SYSTEM32>\cmd.exe' /c icacls "%CommonProgramFiles%\System\iediagcmd.exe" /deny System:(OI)(CI)(F)' (with hidden window)
'<SYSTEM32>\cmd.exe' /c icacls "%ProgramFiles(x86)%\Microsoft JDX" /deny System:(OI)(CI)(F)' (with hidden window)
'<SYSTEM32>\cmd.exe' /c icacls "%ProgramFiles(x86)%\Microsoft JDX" /deny %username%:(OI)(CI)(F)' (with hidden window)
'<SYSTEM32>\cmd.exe' /c %ALLUSERSPROFILE%\Microsoft\temp\H.bat' (with hidden window)
'<SYSTEM32>\schtasks.exe' /create /TN "Microsoft\Windows\WindowsBackup\TaskCheck" /TR "%ALLUSERSPROFILE%\RealtekHD\taskhostw.exe" /SC MINUTE /MO 2 /RL HIGHEST' (with hidden window)
'<SYSTEM32>\schtasks.exe' /create /TN "Microsoft\Windows\WindowsBackup\OnlogonCheck" /TR "%ALLUSERSPROFILE%\RealtekHD\taskhostw.exe" /SC ONLOGON /RL HIGHEST' (with hidden window)
'<SYSTEM32>\schtasks.exe' /create /TN "Microsoft\Windows\WindowsBackup\WinlogonCheck" /TR "%ALLUSERSPROFILE%\RealtekHD\taskhost.exe" /SC ONLOGON /RL HIGHEST' (with hidden window)
'<SYSTEM32>\cmd.exe' /c icacls "%WINDIR%\Fonts\Mysql" /deny %username%:(OI)(CI)(F)' (with hidden window)
'<SYSTEM32>\cmd.exe' /c icacls "%ALLUSERSPROFILE%\PuzzleMedia" /deny %username%:(OI)(CI)(F)' (with hidden window)
'<SYSTEM32>\cmd.exe' /c icacls %ALLUSERSPROFILE%\Indus /deny System:(OI)(CI)(F)' (with hidden window)
'<SYSTEM32>\cmd.exe' /c icacls C:\KVRT_Data /deny %username%:(OI)(CI)(F)' (with hidden window)
'<SYSTEM32>\cmd.exe' /c icacls C:\AdwCleaner /deny %username%:(OI)(CI)(F)' (with hidden window)
'<SYSTEM32>\cmd.exe' /c icacls "%ALLUSERSPROFILE%\Kaspersky Lab Setup Files" /deny %username%:(OI)(CI)(F)' (with hidden window)
'<SYSTEM32>\cmd.exe' /c icacls "%ALLUSERSPROFILE%\Norton" /deny %username%:(OI)(CI)(F)' (with hidden window)
'<SYSTEM32>\cmd.exe' /c icacls "%ProgramFiles(x86)%\AVG" /deny %username%:(OI)(CI)(F)' (with hidden window)
'<SYSTEM32>\cmd.exe' /c icacls "%ProgramFiles%\AVG" /deny %username%:(OI)(CI)(F)' (with hidden window)
'<SYSTEM32>\cmd.exe' /c icacls "%ALLUSERSPROFILE%\AVAST Software" /deny %username%:(OI)(CI)(F)' (with hidden window)
'<SYSTEM32>\cmd.exe' /c icacls "%ProgramFiles(x86)%\AVAST Software" /deny %username%:(OI)(CI)(F)' (with hidden window)
'<SYSTEM32>\cmd.exe' /c icacls "%ProgramFiles%\AVAST Software" /deny %username%:(OI)(CI)(F)' (with hidden window)
'<SYSTEM32>\cmd.exe' /c icacls "%ProgramFiles%\SpyHunter" /deny %username%:(OI)(CI)(F)' (with hidden window)
'<SYSTEM32>\cmd.exe' /c icacls "%ProgramFiles%\ByteFence" /deny %username%:(OI)(CI)(F)' (with hidden window)
'<SYSTEM32>\cmd.exe' /c icacls "%ProgramFiles%\Enigma Software Group" /deny %username%:(OI)(CI)(F)' (with hidden window)
'<SYSTEM32>\cmd.exe' /c icacls %ALLUSERSPROFILE%\MB3Install /deny System:(F)' (with hidden window)
'<SYSTEM32>\cmd.exe' /c icacls "%ProgramFiles(x86)%\SpyHunter" /deny %username%:(OI)(CI)(F)' (with hidden window)
'<SYSTEM32>\cmd.exe' /c icacls "%ALLUSERSPROFILE%\360safe" /deny %username%:(OI)(CI)(F)' (with hidden window)
'<SYSTEM32>\cmd.exe' /c icacls "%ProgramFiles(x86)%\360" /deny %username%:(OI)(CI)(F)' (with hidden window)
'<SYSTEM32>\cmd.exe' /c icacls C:\FRST /deny system:(OI)(CI)(F)' (with hidden window)
'<SYSTEM32>\cmd.exe' /c icacls C:\FRST /deny %username%:(OI)(CI)(F)' (with hidden window)
'<SYSTEM32>\cmd.exe' /c icacls C:\KVRT2020_Data /deny system:(OI)(CI)(F)' (with hidden window)
'<SYSTEM32>\cmd.exe' /c icacls C:\KVRT2020_Data /deny %username%:(OI)(CI)(F)' (with hidden window)
'<SYSTEM32>\cmd.exe' /c icacls C:\KVRT_Data /deny system:(OI)(CI)(F)' (with hidden window)
'<SYSTEM32>\cmd.exe' /c icacls "%ProgramFiles%\COMODO" /deny %username%:(OI)(CI)(F)' (with hidden window)
'<SYSTEM32>\cmd.exe' /c icacls "%ProgramFiles(x86)%\Transmission" /deny %username%:(OI)(CI)(F)' (with hidden window)
Executes the following
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
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