Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'dIlhost.exe' = '<SYSTEM32>\dIlhost.exe'
Creates the following files on removable media:
- <Drive name for removable media>:\autorun.inf
Malicious functions:
Executes the following:
- <SYSTEM32>\ntvdm.exe -f -i1
- <SYSTEM32>\reg.exe Add HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ /v dIlhost.exe /t REG_SZ /d <SYSTEM32>\dIlhost.exe /f
Modifies file system :
Creates the following files:
- %WINDIR%\Temp\scs1.tmp
- %WINDIR%\Temp\scs2.tmp
- C:\setup.exe
- C:\autorun.inf
Sets the 'hidden' attribute to the following files:
- <Drive name for removable media>:\autorun.inf
- C:\autorun.inf
Deletes the following files:
- %WINDIR%\Temp\scs2.tmp
- C:\setup.exe
- %WINDIR%\Temp\scs1.tmp
- C:\autorun.inf
- <Drive name for removable media>:\autorun.inf
Miscellaneous:
Searches for the following windows:
- ClassName: 'ConsoleWindowClass' WindowName: 'ntvdm-b70.b74.390001'
- ClassName: '' WindowName: ''
- ClassName: '' WindowName: 'dIlhost'