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Win32.HLLW.Autoruner2.5254
Added to the Dr.Web virus database:
2014-02-05
Virus description added:
2014-02-06
Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
[<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] '081e34d164bb678a9d3dbe11cf0ad9c9' = '"%TEMP%\driver.exe" ..'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] '081e34d164bb678a9d3dbe11cf0ad9c9' = '"%TEMP%\driver.exe" ..'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'microsoft' = '<LS_APPDATA>\Crypted1111.exe'
Creates or modifies the following files:
%HOMEPATH%\Start Menu\Programs\Startup\081e34d164bb678a9d3dbe11cf0ad9c9.exe
Creates the following files on removable media:
<Drive name for removable media>:\081e34d164bb678a9d3dbe11cf0ad9c9.exe
Malicious functions:
To bypass firewall, removes or modifies the following registry keys:
[<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '%TEMP%\driver.exe' = '%TEMP%\driver.exe:*:Enabled:driver.exe'
Creates and executes the following:
Executes the following:
'<SYSTEM32>\netsh.exe' firewall add allowedprogram "%TEMP%\driver.exe" "driver.exe" ENABLE
Modifies file system :
Creates the following files:
%WINDIR%\Microsoft.NET\Framework\v2.0.50727\CONFIG\security.config.cch.new
%WINDIR%\Microsoft.NET\Framework\v2.0.50727\CONFIG\enterprisesec.config.cch.new
<LS_APPDATA>\Crypted1111.exe
%TEMP%\driver.exe
Sets the 'hidden' attribute to the following files:
<Drive name for removable media>:\081e34d164bb678a9d3dbe11cf0ad9c9.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:
'be####91.no-ip.org':1357
UDP:
DNS ASK be####91.no-ip.org
Miscellaneous:
Searches for the following windows:
ClassName: 'Indicator' WindowName: '(null)'
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