Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon] 'Userinit' = '<SYSTEM32>\userinit.exe, <SYSTEM32>\Hello.com'
- [<HKLM>\SOFTWARE\Classes\.com] '' = 'exefile'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'winsvc' = '%APPDATA%\Hello.com'
- [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon] 'Shell' = 'explorer.exe'
Creates the following files on removable media:
- <Drive name for removable media>:\autorun.inf
- <Drive name for removable media>:\Hello.com
Malicious functions:
To complicate detection of its presence in the operating system,
forces the system hide from view:
- hidden files
Executes the following:
- '<SYSTEM32>\taskkill.exe' /pid=748
- '<SYSTEM32>\taskkill.exe' /pid=2996
- '<SYSTEM32>\taskkill.exe' /pid=728
- '<SYSTEM32>\taskkill.exe' /pid=3120
- '<SYSTEM32>\taskkill.exe' /pid=2952
- '<SYSTEM32>\taskkill.exe' /pid=2636
- '<SYSTEM32>\taskkill.exe' /f /im Hello.com
- '<SYSTEM32>\taskkill.exe' /pid=324
- '<SYSTEM32>\taskkill.exe' /pid=3412
Injects code into
the following system processes:
- <SYSTEM32>\taskkill.exe
Modifies settings of Windows Explorer:
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer] 'NoFolderOptions' = '00000000'
Modifies settings of Windows Internet Explorer:
- [<HKCU>\Software\Microsoft\Internet Explorer\Main] 'Window Title' = 'Tanmay Tiwari-Internet Explorer'
Sets a new unauthorized home page for Windows Internet Explorer.
Modifies file system :
Creates the following files:
- <SYSTEM32>\Hello.com
- %APPDATA%\Hello.com
Sets the 'hidden' attribute to the following files:
- <Drive name for removable media>:\autorun.inf
Deletes the following files:
- <Drive name for removable media>:\autorun.inf
- <Drive name for removable media>:\Hello.com
- %APPDATA%\Hello.com
- <SYSTEM32>\Hello.com
Miscellaneous:
Searches for the following windows:
- ClassName: '(null)' WindowName: '(null)'
- ClassName: 'Indicator' WindowName: '(null)'
- ClassName: 'Shell_TrayWnd' WindowName: '(null)'
