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Win32.HLLW.Autoruner.38532
Added to the Dr.Web virus database:
2010-12-19
Virus description added:
2011-08-15
Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
[<HKLM>\SOFTWARE\Microsoft\Active Setup\Installed Components\{1CE3ABDC-BF64-BEFC-4DFC-0E7F63B6BDA9}] 'StubPath' = '%APPDATA%\winlogon.exe'
[<HKCU>\Software\Microsoft\Active Setup\Installed Components\{1CE3ABDC-BF64-BEFC-4DFC-0E7F63B6BDA9}] 'StubPath' = '%APPDATA%\winlogon.exe'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'Policies' = '%APPDATA%\winlogon.exe'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] '<Virus name>.exe' = '%APPDATA%\sVoUr\sVoUr\0.0.0.0\<Virus name>.exe'
[<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'Policies' = '%APPDATA%\winlogon.exe'
Creates the following files on removable media:
<Drive name for removable media>:\Autorun.ini
<Drive name for removable media>:\autorun.inf
<Drive name for removable media>:\Crisis.exe
Malicious functions:
To bypass firewall, removes or modifies the following registry keys:
[<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '%APPDATA%\winlogon.exe' = '%APPDATA%\winlogon.exe:*:Enabled:Windows Messanger'
[<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '%WINDIR%\Microsoft.NET\Framework\v2.0.50727\vbc.exe' = '%WINDIR%\Microsoft.NET\Framework\v2.0.50727\vbc.exe:*:Enabled:Windows Messanger'
[<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 "%WINDIR%\Microsoft.NET\Framework\v2.0.50727\vbc.exe" /t REG_SZ /d "%WINDIR%\Microsoft.NET\Framework\v2.0.50727\vbc.exe:*:Enabled:Windows Messanger" /f
<SYSTEM32>\reg.exe ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List /v "%APPDATA%\winlogon.exe" /t REG_SZ /d "%APPDATA%\winlogon.exe:*:Enabled:Windows Messanger" /f
%WINDIR%\Microsoft.NET\Framework\v2.0.50727\vbc.exe
<SYSTEM32>\reg.exe ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile /v "DoNotAllowExceptions" /t REG_DWORD /d "0" /f
Injects code into
the following system processes:
Modifies file system :
Creates the following files:
%APPDATA%\data.dat
%APPDATA%\winlogon.exe
%APPDATA%\sVoUr\sVoUr\0.0.0.0\<Virus name>.exe
Sets the 'hidden' attribute to the following files:
<Drive name for removable media>:\Crisis.exe
<Drive name for removable media>:\Autorun.ini
%APPDATA%\sVoUr\sVoUr\0.0.0.0\<Virus name>.exe
<Drive name for removable media>:\autorun.inf
Network activity:
Connects to:
'he#####itos.no-ip.biz':3333
UDP:
DNS ASK he#####itos.no-ip.biz
Miscellaneous:
Searches for the following windows:
ClassName: 'shell_traywnd' WindowName: ''
ClassName: 'Indicator' WindowName: ''
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