Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\RunOnce] 'Microsoft Windows Update Service' = '%APPDATA%\Microsoft\CA8DC6DDDE1D22127B35B46E227A1C48\svchost.exe'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run] 'Microsoft Windows Update Service' = '%APPDATA%\Microsoft\CA8DC6DDDE1D22127B35B46E227A1C48\svchost.exe'
Creates the following files on removable media:
- <Drive name for removable media>:\Autorun.inf
- <Drive name for removable media>:\USB_Helper.exe
Malicious functions:
To bypass firewall, removes or modifies the following registry keys:
- [<HKLM>\SYSTEM\ControlSet002\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile] 'DoNotAllowExceptions' = '00000000'
- [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile] 'DoNotAllowExceptions' = '00000000'
Creates and executes the following:
- '%APPDATA%\Microsoft\CA8DC6DDDE1D22127B35B46E227A1C48\svchost.exe'
Injects code into
the following system processes:
- %WINDIR%\Explorer.EXE
- <SYSTEM32>\ctfmon.exe
Modifies file system :
Creates the following files:
- %APPDATA%\Microsoft\CA8DC6DDDE1D22127B35B46E227A1C48\svchost.exe
Sets the 'hidden' attribute to the following files:
- <Drive name for removable media>:\Autorun.inf
- <Drive name for removable media>:\USB_Helper.exe
- %APPDATA%\Microsoft\CA8DC6DDDE1D22127B35B46E227A1C48\svchost.exe
