Technical Information
To ensure autorun and distribution:
Substitutes the following executable system files:
- <SYSTEM32>\dllcache\explorer.exe with <SYSTEM32>\dllcache\explorer.exe.new
- %WINDIR%\explorer.exe with %WINDIR%\Explorer.EXE.tmp
Infects the following executable files:
- <SYSTEM32>\dllcache\explorer.exe.new
- %WINDIR%\Explorer.EXE.tmp
Modifies file system :
Creates the following files:
- %CommonProgramFiles%\System\symsrv.dll
Deletes the following files:
- %CommonProgramFiles%\System\symsrv.dll.000
- %WINDIR%\Explorer.EXE.dat
Moves the following system files:
- from %WINDIR%\explorer.exe to %WINDIR%\Explorer.EXE.dat
Moves the following files:
- from <SYSTEM32>\dllcache\explorer.exe.new to <SYSTEM32>\dllcache\explorer.exe
- from %WINDIR%\explorer.exe.new to %WINDIR%\explorer.exe
- from <Auxiliary element> to <Auxiliary element>
Network activity:
Connects to:
- 'www.ai##v.com':80
- 'www.zx##b.com':80
TCP:
HTTP GET requests:
- www.ai##v.com/logo.gif
- www.zx##b.com/logo.gif
UDP:
- DNS ASK www.ai##v.com
- DNS ASK www.zx##b.com
Miscellaneous:
Searches for the following windows:
- ClassName: 'Shell_TrayWnd' WindowName: '(null)'