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Win32.HLLW.Autoruner2.22123

Added to the Dr.Web virus database: 2015-09-27

Virus description added:

Technical Information

To ensure autorun and distribution:
Modifies the following registry keys:
  • [<HKLM>\SOFTWARE\Microsoft\Active Setup\Installed Components\{8A1AB9DE-7EBB-ECAB-1EDA-CEAC75D4D8DE}] 'StubPath' = '%APPDATA%\svchost.exe'
  • [<HKCU>\Software\Microsoft\Active Setup\Installed Components\{8A1AB9DE-7EBB-ECAB-1EDA-CEAC75D4D8DE}] 'StubPath' = '%APPDATA%\svchost.exe'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'WinDefender.exe' = '%APPDATA%\svchost.exe'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Explorer\run] 'WinDefender.exe' = '%APPDATA%\svchost.exe'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'WinDefender.exe' = '%APPDATA%\svchost.exe'
Creates the following files on removable media:
  • <Drive name for removable media>:\Autorun.ini
  • <Drive name for removable media>:\<Virus name>.exe
Malicious functions:
To bypass firewall, removes or modifies the following registry keys:
  • [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '%APPDATA%\svchost.exe' = '%APPDATA%\svchost.exe:*:Enabled:Windows Mess...
  • [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '<Full path to virus>' = '<Full path to virus>:*:Enabled:Windows Messan...
  • [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile] 'DoNotAllowExceptions' = '00000000'
Executes the following:
  • '<SYSTEM32>\reg.exe' ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List /v "<Full path to virus>" /t REG_SZ /d "<Full path to virus>:*:Enab...
  • '<SYSTEM32>\reg.exe' ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile /v "DoNotAllowExceptions" /t REG_DWORD /d "0" /f
  • '<SYSTEM32>\reg.exe' ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List /v "%APPDATA%\svchost.exe" /t REG_SZ /d "%APPDATA%\svchost.exe:*:En...
  • '<SYSTEM32>\cmd.exe' /c REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile /v "DoNotAllowExceptions" /t REG_DWORD /d "0" /f
  • '<SYSTEM32>\cmd.exe' /c REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List /v "<Full path to virus>" /t REG_SZ /d "<Full path to virus>...
  • '<SYSTEM32>\cmd.exe' /c REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List /v "%APPDATA%\svchost.exe" /t REG_SZ /d "%APPDATA%\svchost.e...
Injects code into
the following system processes:
  • %WINDIR%\Explorer.EXE
Modifies file system :
Creates the following files:
  • %APPDATA%\data.dat
  • %APPDATA%\svchost.exe
Sets the 'hidden' attribute to the following files:
  • <Drive name for removable media>:\Autorun.ini
  • <Drive name for removable media>:\<Virus name>.exe
Network activity:
Connects to:
  • 'og######wombat.no-ip.org':27015
UDP:
  • DNS ASK og######wombat.no-ip.org
Miscellaneous:
Searches for the following windows:
  • ClassName: 'shell_traywnd' WindowName: ''
  • ClassName: 'Indicator' WindowName: ''