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Win32.HLLW.Autoruner2.3734
Added to the Dr.Web virus database:
2014-01-29
Virus description added:
2014-01-31
Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
[<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] '471c3750eec5c6d5446505b553d4ed13' = '"%TEMP%\server.exe" ..'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] '471c3750eec5c6d5446505b553d4ed13' = '"%TEMP%\server.exe" ..'
Creates or modifies the following files:
%HOMEPATH%\Start Menu\Programs\Startup\471c3750eec5c6d5446505b553d4ed13.exe
Malicious functions:
To bypass firewall, removes or modifies the following registry keys:
[<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '%TEMP%\server.exe' = '%TEMP%\server.exe:*:Enabled:server.exe'
Creates and executes the following:
Executes the following:
'<SYSTEM32>\netsh.exe' firewall add allowedprogram "%TEMP%\server.exe" "server.exe" ENABLE
Modifies file system :
Creates the following files:
%WINDIR%\Microsoft.NET\Framework\v2.0.50727\CONFIG\enterprisesec.config.cch.new
%WINDIR%\Microsoft.NET\Framework\v2.0.50727\CONFIG\security.config.cch.new
%TEMP%\server.exe
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:
DNS ASK za####0.no-ip.biz
Miscellaneous:
Searches for the following windows:
ClassName: 'Indicator' WindowName: '(null)'
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