Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'mmva' = '<SYSTEM32>\mmvo.exe'
Substitutes the following executable system files:
- <SYSTEM32>\dllcache\tdi.sys with <SYSTEM32>\dllcache\tdi.sys.new
- <DRIVERS>\tdi.sys with <DRIVERS>\tdi.sys.new
Creates the following files on removable media:
- <Drive name for removable media>:\autorun.inf
- <Drive name for removable media>:\p3th8wb.cmd
Malicious functions:
To complicate detection of its presence in the operating system,
forces the system hide from view:
- hidden files
Creates and executes the following:
- %WINDIR%\rb.exe
Injects code into
the following system processes:
- %WINDIR%\Explorer.EXE
Installs hooks to intercept notifications
on keystrokes:
- Handler for all processes: <SYSTEM32>\mmvo0.dll
Searches for windows to
bypass different anti-viruses:
- ClassName: 'AVP.Product_Notification' WindowName: ''
- ClassName: 'AVP.AlertDialog' WindowName: ''
Restores hooked functions in System Service Descriptor Table (SSDT).
Forces autoplay for removable media.
Modifies file system :
Creates the following files:
- <SYSTEM32>\dllcache\tdi.sys.new
- C:\autorun.inf
- %TEMP%\uu.rar
- %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\KHMHGZ4F\uu[1].rar
- C:\p3th8wb.cmd
- <SYSTEM32>\mmvo.exe
- %WINDIR%\rb.exe
- <DRIVERS>\tdi.sys.new
- <SYSTEM32>\mmvo0.dll
Sets the 'hidden' attribute to the following files:
- C:\autorun.inf
- <Drive name for removable media>:\p3th8wb.cmd
- <Drive name for removable media>:\autorun.inf
- <SYSTEM32>\mmvo.exe
- <SYSTEM32>\mmvo0.dll
- C:\p3th8wb.cmd
Deletes the following files:
- C:\autorun.inf
- <Drive name for removable media>:\p3th8wb.cmd
- <Drive name for removable media>:\autorun.inf
- C:\p3th8wb.cmd
- <DRIVERS>\tdi.sys
- %WINDIR%\rb.exe
- %TEMP%\uu.rar
Moves itself:
- from <Full path to virus> to %TEMP%\nod1.tmp
Network activity:
Connects to:
- '33##g.com':80
- 'localhost':1035
TCP:
HTTP GET requests:
- 33##g.com/rbv/uu.rar
UDP:
- DNS ASK 33##g.com
Miscellaneous:
Searches for the following windows:
- ClassName: 'Indicator' WindowName: ''