Win32.HLLW.Autoruner1.58303
Added to the Dr.Web virus database:
2013-10-13
Virus description added:
2013-10-13
Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKLM>\SOFTWARE\Microsoft\Active Setup\Installed Components\{BAB98A0C-CDF8-B2F0-CDAD-2BCE88C0FBD8}] 'StubPath' = '¤h'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'HKCU' = '<SYSTEM32>\Kurulum\Server.exe'
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'HKLM' = '<SYSTEM32>\Kurulum\Server.exe'
Creates the following files on removable media:
- <Drive name for removable media>:\autorun.inf
- <Drive name for removable media>:\Updates.lnk
- <Drive name for removable media>:\GUpdate.exe
Malicious functions:
To bypass firewall, removes or modifies the following registry keys:
- [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile] 'EnableFirewall' = '00000000'
- [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '<Full path to virus>' = '<Full path to virus>:*:Enabled:Windows Messanger'
- [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile] 'DoNotAllowExceptions' = '00000000'
To complicate detection of its presence in the operating system,
blocks the following features:
- User Account Control (UAC)
Executes the following:
- '<SYSTEM32>\reg.exe' ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List /v "<Full path to virus>" /t REG_SZ /d "<Full path to virus>:*:Enabled:Windows Messanger" /f
- '<SYSTEM32>\netsh.exe' firewall set opmode disable
- '<SYSTEM32>\notepad.exe'
- '<SYSTEM32>\reg.exe' ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile /v "DoNotAllowExceptions" /t REG_DWORD /d "0" /f
Modifies file system :
Creates the following files:
- <SYSTEM32>\Kurulum\Server.exe
Sets the 'hidden' attribute to the following files:
- <SYSTEM32>\Kurulum\Server.exe
- <Full path to virus>
- <Drive name for removable media>:\GUpdate.exe
- <Drive name for removable media>:\autorun.inf
Deletes itself.
Miscellaneous:
Searches for the following windows:
- ClassName: 'Indicator' WindowName: '(null)'
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