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Trojan.KillProc.31024

Added to the Dr.Web virus database: 2014-02-22

Virus description added:

Technical Information

To ensure autorun and distribution:
Modifies the following registry keys:
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'Monitor.exe' = '<Current directory>\Monitor.exe'
Malicious functions:
To complicate detection of its presence in the operating system,
blocks execution of the following system utilities:
  • Windows Task Manager (Taskmgr)
Terminates or attempts to terminate
the following system processes:
  • <SYSTEM32>\cscript.exe
  • <SYSTEM32>\cmd.exe
  • <SYSTEM32>\ctfmon.exe
a large number of user processes.
Modifies settings of Windows Explorer:
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer] 'NoLogoff' = '00000001'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer] 'NoRun' = '00000001'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer] 'NoClose' = '00000001'
Modifies file system :
Creates the following files:
  • <Current directory>\senha.txt
Miscellaneous:
Searches for the following windows:
  • ClassName: '(null)' WindowName: 'Propriedades do sistema'
  • ClassName: '(null)' WindowName: 'Lixeira'
  • ClassName: '(null)' WindowName: 'Propriedades de V?deo'
  • ClassName: '(null)' WindowName: 'Ambiente de Rede'
  • ClassName: '(null)' WindowName: 'Propriedade de teclado'
  • ClassName: '(null)' WindowName: 'Editor do Registro'
  • ClassName: '(null)' WindowName: 'Prompt de commando'
  • ClassName: '(null)' WindowName: 'Prompt do Ms-Dos'
  • ClassName: '(null)' WindowName: '(C:)'
  • ClassName: '(null)' WindowName: 'Gerenciador de Tarefas do Windows'
  • ClassName: '(null)' WindowName: 'Propriedade de Sons'
  • ClassName: '(null)' WindowName: 'Editor de Registro'
  • ClassName: 'ExploreWClass' WindowName: '(null)'
  • ClassName: '(null)' WindowName: 'Configurar p?gina'
  • ClassName: 'CabinetWClass' WindowName: '(null)'
  • ClassName: '(null)' WindowName: 'Salvar p?gina da Web'
  • ClassName: '(null)' WindowName: 'Salvar Como'
  • ClassName: '(null)' WindowName: 'Imprimir'
  • ClassName: '(null)' WindowName: 'Executar'
  • ClassName: '(null)' WindowName: 'Utilit?rio de configura??o do sistema'
  • ClassName: '(null)' WindowName: 'Op??es da Internet'
  • ClassName: '(null)' WindowName: 'Download de Arquivo - Aviso de Seguran?a'
  • ClassName: '(null)' WindowName: 'Download de arquivo'
  • ClassName: '(null)' WindowName: 'Gerenciamento do computador'
  • ClassName: '(null)' WindowName: 'Tarefas agendadas'
  • ClassName: '(null)' WindowName: 'Prompt de comando'
  • ClassName: '(null)' WindowName: 'Propriedades de Lixeira'
  • ClassName: '(null)' WindowName: 'Confirm Shortcut Delete'
  • ClassName: '(null)' WindowName: 'Informa??es sobre o sistema'
  • ClassName: 'Shell_TrayWnd' WindowName: '(null)'
  • ClassName: 'IEFrame' WindowName: '(null)'
  • ClassName: '(null)' WindowName: 'Program Manager'
  • ClassName: '(null)' WindowName: 'Barra de Endere?os'
  • ClassName: '(null)' WindowName: 'dWinlock trial version'
  • ClassName: '(null)' WindowName: 'Confirm Folder Delete'
  • ClassName: '(null)' WindowName: 'Propriedade de Data e hora'
  • ClassName: '(null)' WindowName: 'Propriedades de Barra de tarefas e menu iniciar'
  • ClassName: '(null)' WindowName: 'Painel de controle'
  • ClassName: '(null)' WindowName: 'Arquivos de Programas'
  • ClassName: '(null)' WindowName: 'Meus locais de Rede'
  • ClassName: '(null)' WindowName: 'Confirmar exclus?o'
  • ClassName: '(null)' WindowName: 'Confirmar exclus?o de v?rios arquivos'
  • ClassName: '(null)' WindowName: 'Confirm File Delete'
  • ClassName: '(null)' WindowName: 'Confirmar exclus?o de atalho'
  • ClassName: '(null)' WindowName: 'Confirmar exclus?o de arquivo'
  • ClassName: '(null)' WindowName: 'Confirmar exclus?o de pasta'

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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Use Dr.Web Anti-virus for macOS to run a full scan of your Mac.

After booting up, run a full scan of all disk partitions with Dr.Web Anti-virus for Linux.

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Download by serial number

  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.

Find out more about Dr.Web for Android