Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'Thumbs' = 'wscript.exe //B "%TEMP%\Thumbs.vbs"'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'Thumbs' = 'wscript.exe //B "%TEMP%\Thumbs.vbs"'
Creates or modifies the following files:
- %HOMEPATH%\Start Menu\Programs\Startup\Thumbs.vbs
Creates the following files on removable media:
- <Drive name for removable media>:\Thumbs.vbs
Malicious functions:
Creates and executes the following:
- '%TEMP%\program2.exe'
Executes the following:
- '<SYSTEM32>\wscript.exe' "%TEMP%\Thumbs.vbs"
Modifies file system :
Creates the following files:
- %TEMP%\aut2.tmp
- %TEMP%\Thumbs.vbs
- %TEMP%\aut1.tmp
- %TEMP%\program2.exe
Sets the 'hidden' attribute to the following files:
- <Drive name for removable media>:\Thumbs.vbs
Deletes the following files:
- %TEMP%\aut2.tmp
- %TEMP%\aut1.tmp
Network activity:
Connects to:
- 'za#####t1.myq-see.com':1987
- 'localhost':1036
UDP:
- DNS ASK za#####t1.myq-see.com
Miscellaneous:
Searches for the following windows:
- ClassName: 'Indicator' WindowName: '(null)'
- ClassName: 'Shell_TrayWnd' WindowName: '(null)'
