Win32.HLLW.Autoruner.56255
Added to the Dr.Web virus database:
2011-08-13
Virus description added:
2011-08-14
Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKLM>\SOFTWARE\Microsoft\Active Setup\Installed Components\{DBBBE5BD-FCAA-FEF3-D7C1-FEBBB072C64F}] 'StubPath' = '%APPDATA%\svchost.exe'
- [<HKCU>\Software\Microsoft\Active Setup\Installed Components\{DBBBE5BD-FCAA-FEF3-D7C1-FEBBB072C64F}] 'StubPath' = '%APPDATA%\svchost.exe'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'Policies' = '%APPDATA%\svchost.exe'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'CCleaner.exe' = '%APPDATA%\SvLrxR\SvLrxR\0.0.0.0\CCleaner.exe'
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'Policies' = '%APPDATA%\svchost.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%\svchost.exe' = '%APPDATA%\svchost.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'
Creates and executes the following:
- %HOMEPATH%\My Documents\CCleaner.exe
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%\svchost.exe" /t REG_SZ /d "%APPDATA%\svchost.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%\svchost.exe
- %APPDATA%\data.dat
- %HOMEPATH%\My Documents\CCleaner.exe
- %APPDATA%\SvLrxR\SvLrxR\0.0.0.0\CCleaner.exe
Sets the 'hidden' attribute to the following files:
- <Drive name for removable media>:\Crisis.exe
- <Drive name for removable media>:\Autorun.ini
- <Drive name for removable media>:\autorun.inf
- %HOMEPATH%\My Documents\CCleaner.exe
- %APPDATA%\SvLrxR\SvLrxR\0.0.0.0\CCleaner.exe
Network activity:
Connects to:
- 'ba#####buzi.no-ip.biz':3333
UDP:
- DNS ASK ba#####buzi.no-ip.biz
Miscellaneous:
Searches for the following windows:
- ClassName: 'shell_traywnd' WindowName: ''
- ClassName: 'Indicator' WindowName: ''
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