Win32.HLLW.Autoruner2.156

Added to the Dr.Web virus database: 2013-12-25

Virus description added: 2013-12-26

To ensure autorun and distribution:

Modifies the following registry keys:

[<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] '53b6f6cbe7c28bb1a6deaf6cf4f17fd8' = '"%TEMP%\microsoft.exe" ..'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] '53b6f6cbe7c28bb1a6deaf6cf4f17fd8' = '"%TEMP%\microsoft.exe" ..'

Creates or modifies the following files:

Malicious functions:

To bypass firewall, removes or modifies the following registry keys:

[<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '%TEMP%\microsoft.exe' = '%TEMP%\microsoft.exe:*:Enabled:microsoft.exe'

Creates and executes the following:

Executes the following:

'<SYSTEM32>\netsh.exe' firewall add allowedprogram "%TEMP%\microsoft.exe" "microsoft.exe" ENABLE
'<SYSTEM32>\rundll32.exe' <SYSTEM32>\shimgvw.dll,ImageView_Fullscreen <LS_APPDATA>jHoAwKJ_Es.JPEG

Modifies file system :

Creates the following files:

Moves the following files:

from %WINDIR%\Microsoft.NET\Framework\v2.0.50727\CONFIG\enterprisesec.config.cch.new to %WINDIR%\Microsoft.NET\Framework\v2.0.50727\CONFIG\enterprisesec.config.cch
from %WINDIR%\Microsoft.NET\Framework\v2.0.50727\CONFIG\security.config.cch.new to %WINDIR%\Microsoft.NET\Framework\v2.0.50727\CONFIG\security.config.cch

Network activity:

Connects to:

UDP:

Miscellaneous:

Searches for the following windows: