Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\ShellServiceObjectDelayLoad] 'Update Windows' = '{8442372B-17FA-167F-8948-B3B4118D42Bf}'
Malicious functions:
To bypass firewall, removes or modifies the following registry keys:
- [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '%windir%\explorer.exe' = '%windir%\explorer.exe:*:enabled:Shell update server connection'
Modifies file system :
Creates the following files:
- <SYSTEM32>\update.dll
- C:\pagefile.dat
Sets the 'hidden' attribute to the following files:
- C:\pagefile.dat
