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Trojan.DownLoader36.34350

Added to the Dr.Web virus database: 2021-01-11

Virus description added:

Technical Information

To ensure autorun and distribution
Modifies the following registry keys
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'STARTUP' = 'C:\GatonFiles\Scirpts\Actualizador.vbs'
Modifies file system
Creates the following files
  • C:\gatonfiles\scirpts\regedit.vbs
  • C:\temp\files\cmc.bat
  • C:\temp\files\despiertador.bat
  • C:\temp\files\despiertador.vbs
  • C:\temp\files\files.vbs
  • C:\temp\files\messagesender.vbs
  • C:\temp\files\regedit.vbs
  • C:\temp\files\wifi.bat
  • C:\gatonfiles\scirpts\despiertador.bat
  • C:\temp\files\despiertadorrapido.vbs
  • C:\temp\files\despiertadorrapido.bat
  • C:\temp\files\despiertadespiertador.vbs
  • C:\temp\files\despiertadespiertador.bat
  • C:\temp\files\actualizador.vbs
  • C:\temp\files\link.exe
  • C:\gatonfiles\scirpts\mortu.bat
  • C:\gatonfiles\scirpts\morto.bat
  • C:\gatonfiles\scirpts\actualizador.vbs
  • C:\gatonfiles\scirpts\uploader.vbs
  • C:\gatonfiles\scirpts\despiertadespiertador.vbs
  • C:\gatonfiles\scirpts\despiertadespiertador.bat
  • C:\gatonfiles\scirpts\despiertadorrapido.vbs
  • C:\gatonfiles\scirpts\despiertador.vbs
  • C:\gatonfiles\scirpts\cmc.bat
  • C:\temp\files\userdata.bat
  • C:\gatonfiles\scirpts\wifi.bat
  • C:\gatonfiles\scirpts\link.exe
  • C:\gatonfiles\scirpts\files.vbs
  • C:\gatonfiles\scirpts\despiertadorrapido.bat
  • C:\gatonfiles\scirpts\userdata.bat
  • C:\gatonfiles\scirpts\messagesender.vbs
  • C:\gatonfiles\scirpts\uploader.bat
  • C:\temp\files\uploader.bat
  • C:\temp\files\uploader.vbs
Sets the 'hidden' attribute to the following files
  • C:\gatonfiles\scirpts\regedit.vbs
  • C:\gatonfiles\scirpts\actualizador.vbs
  • C:\gatonfiles\scirpts\uploader.vbs
  • C:\gatonfiles\scirpts\despiertadespiertador.vbs
  • C:\gatonfiles\scirpts\despiertadespiertador.bat
  • C:\gatonfiles\scirpts\despiertadorrapido.vbs
  • C:\gatonfiles\scirpts\despiertador.vbs
  • C:\gatonfiles\scirpts\cmc.bat
  • C:\gatonfiles\scirpts\despiertador.bat
  • C:\gatonfiles\scirpts\wifi.bat
  • C:\gatonfiles\scirpts\link.exe
  • C:\gatonfiles\scirpts\files.vbs
  • C:\gatonfiles\scirpts\despiertadorrapido.bat
  • C:\gatonfiles\scirpts\userdata.bat
  • C:\gatonfiles\scirpts\messagesender.vbs
  • C:\gatonfiles\scirpts\uploader.bat
  • C:\gatonfiles\scirpts\morto.bat
  • C:\gatonfiles\scirpts\mortu.bat
Network activity
TCP
HTTP GET requests
  • http://www.microsoft.com/pki/certs/MicRooCerAut_2010-06-23.crt
  • 'cd#.##scordapp.com':443
  • UDP
    • DNS ASK cd#.##scordapp.com
    • DNS ASK microsoft.com
    Miscellaneous
    Creates and executes the following
    • '<SYSTEM32>\wscript.exe' "C:\GatonFiles\Scirpts\DespiertadorRapido.vbs"
    • '<SYSTEM32>\wscript.exe' "C:\GatonFiles\Scirpts\Files.vbs"
    • '<SYSTEM32>\wscript.exe' "C:\GatonFiles\Scirpts\Messagesender.vbs"
    • '<SYSTEM32>\wscript.exe' "C:\GatonFiles\Scirpts\Regedit.vbs"
    • '<SYSTEM32>\wscript.exe' "C:\GatonFiles\Scirpts\DespiertaDespiertador.vbs"
    • '<SYSTEM32>\wscript.exe' "C:\GatonFiles\Scirpts\Despiertador.vbs" param1
    • '<SYSTEM32>\cmd.exe' /c ""C:\GatonFiles\Scirpts\cmc.bat" "' (with hidden window)
    • '<SYSTEM32>\cmd.exe' /c ""C:\GatonFiles\Scirpts\DespiertaDespiertador.bat" "' (with hidden window)
    • '<SYSTEM32>\reg.exe' delete HKCU\Software\Microsoft\Windows\CurrentVersion\Run /v reco /f"' (with hidden window)
    • '<SYSTEM32>\cmd.exe' /c ""C:\GatonFiles\Scirpts\UserData.bat" "' (with hidden window)
    • '<SYSTEM32>\cmd.exe' /c ""C:\GatonFiles\Scirpts\Uploader.bat" "' (with hidden window)
    • '<SYSTEM32>\reg.exe' delete HKCU\Software\Microsoft\Windows\CurrentVersion\Run /v fea /f"' (with hidden window)
    • '<SYSTEM32>\reg.exe' delete HKCU\Software\Microsoft\Windows\CurrentVersion\Run /v nes /f"' (with hidden window)
    • '<SYSTEM32>\ping.exe' -n 1 -w 300 1.1.1.1' (with hidden window)
    • '<SYSTEM32>\cmd.exe' /c ""C:\GatonFiles\Scirpts\DespiertadorRapido.bat" "' (with hidden window)
    • '<SYSTEM32>\reg.exe' add HKCU\Software\Microsoft\Windows\CurrentVersion\Run /v STARTUP /d "C:\GatonFiles\Scirpts\Actualizador.vbs" /f"' (with hidden window)
    • '<SYSTEM32>\cmd.exe' /c ""C:\GatonFiles\Scirpts\Despiertador.bat" "' (with hidden window)
    Executes the following
    • '<SYSTEM32>\cmd.exe'
    • '<SYSTEM32>\cmd.exe' /c wmic cpu get NumberOfCores
    • '<SYSTEM32>\wbem\wmic.exe' process where 'CommandLine like "%C:\\GatonFiles\\Scirpts\\Files.vbs%" and not CommandLine like "%RuntimeBroker%"' get CommandLine,ProcessId /format:value
    • '<SYSTEM32>\wbem\wmic.exe' cpu get NumberOfCores
    • '<SYSTEM32>\timeout.exe' /t 5 /NOBREAK
    • '<SYSTEM32>\timeout.exe' /t 3 /Nobreak
    • '<SYSTEM32>\cmd.exe' /c wmic path win32_VideoController get name
    • '<SYSTEM32>\wbem\wmic.exe' path win32_VideoController get name
    • '<SYSTEM32>\cmd.exe' /c wmic path win32_VideoController get CurrentRefreshRate
    • '<SYSTEM32>\wbem\wmic.exe' path win32_VideoController get CurrentRefreshRate
    • '<SYSTEM32>\cmd.exe' /c wmic path win32_VideoController get DriverVersion
    • '<SYSTEM32>\wbem\wmic.exe' process where 'CommandLine like "%C:\\GatonFiles\\Scirpts\\Messagesender.vbs%" and not CommandLine like "%RuntimeBroker%"' get CommandLine,ProcessId /format:value
    • '<SYSTEM32>\cmd.exe' /c wmic process where 'CommandLine like "%C:\\GatonFiles\\Scirpts\\Files.vbs%" and not CommandLine like "%RuntimeBroker%"' get CommandLine,ProcessId /format:value
    • '<SYSTEM32>\timeout.exe' 5
    • '<SYSTEM32>\wbem\wmic.exe' path win32_VideoController get VideoModeDescription
    • '<SYSTEM32>\cmd.exe' /c wmic baseboard get product
    • '<SYSTEM32>\wbem\wmic.exe' baseboard get product
    • '<SYSTEM32>\cmd.exe' /c wmic OS GET Caption
    • '<SYSTEM32>\wbem\wmic.exe' OS GET Caption
    • '<SYSTEM32>\cmd.exe' /c wmic OS GET CSName
    • '<SYSTEM32>\wbem\wmic.exe' OS GET CSName
    • '<SYSTEM32>\timeout.exe' /t 10 /NOBREAK
    • '<SYSTEM32>\cmd.exe' /c wmic OS GET Version
    • '<SYSTEM32>\wbem\wmic.exe' OS GET Version
    • '<SYSTEM32>\wbem\wmic.exe' path win32_VideoController get DriverVersion
    • '<SYSTEM32>\cmd.exe' /c wmic path win32_VideoController get VideoModeDescription
    • '<SYSTEM32>\cmd.exe' /c wmic process where 'CommandLine like "%C:\\GatonFiles\\Scirpts\\Messagesender.vbs%" and not CommandLine like "%RuntimeBroker%"' get CommandLine,ProcessId /format:value
    • '<SYSTEM32>\wbem\wmic.exe' cpu get CurrentClockSpeed
    • '<SYSTEM32>\cmd.exe' /c wmic cpu get CurrentClockSpeed
    • '<SYSTEM32>\cmd.exe' /c wmic process where "name='wscript.exe'" get ParentProcessID
    • '<SYSTEM32>\wbem\wmic.exe' process where "name='wscript.exe'" get ParentProcessID
    • '<SYSTEM32>\timeout.exe' 1 /nobreak
    • '<SYSTEM32>\ping.exe' -n 1 -w 300 1.1.1.1
    • '<SYSTEM32>\cmd.exe' /c ""C:\GatonFiles\Scirpts\Uploader.bat" "
    • '<SYSTEM32>\timeout.exe' 3 /nobreak
    • '<SYSTEM32>\reg.exe' delete HKCU\Software\Microsoft\Windows\CurrentVersion\Run /v fea /f"
    • '<SYSTEM32>\reg.exe' delete HKCU\Software\Microsoft\Windows\CurrentVersion\Run /v nes /f"
    • '<SYSTEM32>\reg.exe' delete HKCU\Software\Microsoft\Windows\CurrentVersion\Run /v reco /f"
    • '<SYSTEM32>\cmd.exe' /c ""C:\GatonFiles\Scirpts\UserData.bat" "
    • '<SYSTEM32>\timeout.exe' 1
    • '<SYSTEM32>\cmd.exe' /c ""C:\GatonFiles\Scirpts\DespiertadorRapido.bat" "
    • '<SYSTEM32>\reg.exe' add HKCU\Software\Microsoft\Windows\CurrentVersion\Run /v STARTUP /d "C:\GatonFiles\Scirpts\Actualizador.vbs" /f"
    • '<SYSTEM32>\cmd.exe' /c ""C:\GatonFiles\Scirpts\DespiertaDespiertador.bat" "
    • '<SYSTEM32>\cmd.exe' /c ""C:\GatonFiles\Scirpts\cmc.bat" "
    • '<SYSTEM32>\cmd.exe' /c wmic process where 'CommandLine like "%C:\\GatonFiles\\Scirpts\\Despiertador.bat%" and not CommandLine like "%RuntimeBroker%"' get CommandLine , ProcessId / format:value
    • '<SYSTEM32>\wbem\wmic.exe' process where 'CommandLine like "%C:\\GatonFiles\\Scirpts\\Despiertador.bat%" and not CommandLine like "%RuntimeBroker%"' get CommandLine , ProcessId / format:value
    • '<SYSTEM32>\netsh.exe' wlan show profiles
    • '<SYSTEM32>\findstr.exe' /R /C:"[ ]:[ ]"
    • '<SYSTEM32>\cmd.exe' /c wmic cpu get name
    • '<SYSTEM32>\wbem\wmic.exe' cpu get name
    • '<SYSTEM32>\cmd.exe' /c ""C:\GatonFiles\Scirpts\Despiertador.bat" "
    • '<SYSTEM32>\cmd.exe' /c wmic process where 'CommandLine like "%C:\\GatonFiles\\Scirpts\\Regedit.vbs%" and not CommandLine like "%RuntimeBroker%"' get CommandLine , ProcessId / format:value
    • '<SYSTEM32>\wbem\wmic.exe' process where 'CommandLine like "%C:\\GatonFiles\\Scirpts\\Regedit.vbs%" and not CommandLine like "%RuntimeBroker%"' get CommandLine , ProcessId / format:value
    • '<SYSTEM32>\cmd.exe' /c curl "https://myexternalip.com/raw"
    • '<SYSTEM32>\cmd.exe' /c wmic OS GET OSArchitecture
    • '<SYSTEM32>\wbem\wmic.exe' OS GET OSArchitecture

    Curing recommendations

    1. 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.
    2. 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.
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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:
      • 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.

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