Technical Information
To ensure autorun and distribution
Modifies the following registry keys
- [<HKCU>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] '18.exe' = '%APPDATA%Microsoft\System\Services\18.exe'
- [<HKLM>\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run] '18.exe' = '%APPDATA%Microsoft\System\Services\18.exe'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'Windows Update' = '%APPDATA%\WindowsUpdate.exe'
Creates the following files on removable media
- <Drive name for removable media>:\autorun.inf
- <Drive name for removable media>:\sys.exe
Malicious functions
To complicate detection of its presence in the operating system,
forces the system hide from view:
- hidden files
Injects code into
the following system processes:
- %WINDIR%\microsoft.net\framework\v2.0.50727\vbc.exe
Modifies file system
Creates the following files
- %APPDATA%\msconfig1.exe
- %APPDATA%microsoft\system\services\18.exe
- %APPDATA%\pid.txt
- %APPDATA%\pidloc.txt
- %APPDATA%\windowsupdate.exe
Sets the 'hidden' attribute to the following files
- %APPDATA%\msconfig1.exe
- <Drive name for removable media>:\autorun.inf
- <Drive name for removable media>:\sys.exe
Network activity
UDP
- DNS ASK wh#####yipaddress.com
Miscellaneous
Creates and executes the following
- '%APPDATA%\msconfig1.exe'
Executes the following
- '%WINDIR%\microsoft.net\framework\v2.0.50727\vbc.exe' /stext "%TEMP%\holdermail.txt"
- '%WINDIR%\microsoft.net\framework\v2.0.50727\vbc.exe' /stext "%TEMP%\holderwb.txt"
