Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'winhelp' = '"%APPDATA%\Microsoft\Internet Explorer\winhlpsvc.exe"'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run] 'winhelp' = '%APPDATA%\Microsoft\Internet Explorer\winhlpsvc.exe'
- [<HKLM>\SOFTWARE\Microsoft\Active Setup\Installed Components\{4fz8rk-15aq-16nc-23or4-2ke0fa051515}] 'StubPath' = '"%APPDATA%\Microsoft\Internet Explorer\winhlpsvc.exe" /lanzateActiveX'
- [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon] 'Shell' = 'Explorer.exe "%APPDATA%\Microsoft\Internet Explorer\winhlpsvc.exe"'
Creates the following files on removable media:
- <Drive name for removable media>:\autorun.inf
- <Drive name for removable media>:\ntldr.exe
Malicious functions:
To complicate detection of its presence in the operating system,
forces the system hide from view:
- hidden files
Modifies file system :
Creates the following files:
- %APPDATA%\Microsoft\Internet Explorer\winhlpsvc.exe
Sets the 'hidden' attribute to the following files:
- <Drive name for removable media>:\autorun.inf
- <Drive name for removable media>:\ntldr.exe
- %APPDATA%\Microsoft\Internet Explorer\winhlpsvc.exe
Miscellaneous:
Searches for the following windows:
- ClassName: 'Indicator' WindowName: ''