Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon] 'Userinit' = '<SYSTEM32>\userinit.exe,<SYSTEM32>\system.exe run'
Creates or modifies the following files:
- %HOMEPATH%\Start Menu\Programs\Startup\system32.exe
Creates the following files on removable media:
- <Drive name for removable media>:\autorun.inf
- <Drive name for removable media>:\SriLanka.exe
Malicious functions:
To complicate detection of its presence in the operating system,
forces the system hide from view:
- hidden files
- file extensions
Creates and executes the following:
- %WINDIR%\Explore.exe run
- %PROGRAM_FILES%\WindowsNT.exe run
- <SYSTEM32>\system.exe run
- %HOMEPATH%\Start Menu\Programs\Startup\system32.exe run
Terminates or attempts to terminate
the following user processes:
- AVP.EXE
Modifies settings of Windows Explorer:
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer] 'NoFolderOptions' = '00000000'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer] 'NoFind' = '00000000'
Forces autoplay for removable media.
Modifies file system :
Creates the following files:
- %TEMP%\aut13.tmp
- %TEMP%\aut12.tmp
- %TEMP%\aut15.tmp
- %TEMP%\aut14.tmp
- %TEMP%\autF.tmp
- %TEMP%\autE.tmp
- %TEMP%\aut11.tmp
- %TEMP%\aut10.tmp
- %TEMP%\aut1B.tmp
- %TEMP%\aut1A.tmp
- %TEMP%\aut1D.tmp
- %TEMP%\aut1C.tmp
- %TEMP%\aut17.tmp
- %TEMP%\aut16.tmp
- %TEMP%\aut19.tmp
- %TEMP%\aut18.tmp
- %TEMP%\autD.tmp
- %WINDIR%\autorun.inf
- %TEMP%\aut2.tmp
- %TEMP%\aut4.tmp
- %TEMP%\aut3.tmp
- <SYSTEM32>\system.exe
- %TEMP%\aut1.tmp
- %PROGRAM_FILES%\WindowsNT.exe
- %WINDIR%\Explore.exe
- %TEMP%\autA.tmp
- %TEMP%\aut9.tmp
- %TEMP%\autC.tmp
- %TEMP%\autB.tmp
- %TEMP%\aut6.tmp
- %TEMP%\aut5.tmp
- %TEMP%\aut8.tmp
- %TEMP%\aut7.tmp
Sets the 'hidden' attribute to the following files:
- <Drive name for removable media>:\autorun.inf
- <Drive name for removable media>:\SriLanka.exe
- %WINDIR%\autorun.inf
- <SYSTEM32>\system.exe
- %HOMEPATH%\Start Menu\Programs\Startup\system32.exe
Deletes the following files:
- %TEMP%\aut15.tmp
- %TEMP%\aut14.tmp
- %TEMP%\aut17.tmp
- %TEMP%\aut16.tmp
- %TEMP%\aut11.tmp
- %TEMP%\aut10.tmp
- %TEMP%\aut13.tmp
- %TEMP%\aut12.tmp
- %TEMP%\aut1B.tmp
- %TEMP%\aut1A.tmp
- %TEMP%\aut1D.tmp
- %TEMP%\aut1C.tmp
- <Drive name for removable media>:\SriLanka.exe
- %TEMP%\aut18.tmp
- %TEMP%\aut19.tmp
- <Drive name for removable media>:\autorun.inf
- %TEMP%\aut6.tmp
- %TEMP%\aut5.tmp
- %WINDIR%\autorun.inf
- %TEMP%\aut7.tmp
- %TEMP%\aut2.tmp
- %TEMP%\aut1.tmp
- %TEMP%\aut4.tmp
- %TEMP%\aut3.tmp
- %TEMP%\autD.tmp
- %TEMP%\autC.tmp
- %TEMP%\autF.tmp
- %TEMP%\autE.tmp
- %TEMP%\aut9.tmp
- %TEMP%\aut8.tmp
- %TEMP%\autB.tmp
- %TEMP%\autA.tmp
Network activity:
Connects to:
- '11#.#11.111.1':25
UDP:
- DNS ASK sm##.gmail.com
Miscellaneous:
Searches for the following windows:
- ClassName: 'Shell_TrayWnd' WindowName: ''
