Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce] 'GrpConv' = 'grpconv -o'
- [<HKLM>\SOFTWARE\Classes\MSProgramGroup\Shell\Open\Command] '' = '<SYSTEM32>\grpconv.exe %1'
- [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon] 'Userinit' = 'userinit.exe,<SYSTEM32>\User32.exe /n,'
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'System' = '%WINDIR%\NewFB.exe /n'
Creates the following files on removable media:
- <Drive name for removable media>:\Kitty.jpg
- <Drive name for removable media>:\AutoRun.inf
Malicious functions:
Executes the following:
- '<SYSTEM32>\grpconv.exe' -o
- '<SYSTEM32>\runonce.exe' -r
- '<SYSTEM32>\rundll32.exe' setupapi,InstallHinfSection DefaultInstall 132 %TEMP%\$x86.inf
Modifies file system :
Creates the following files:
- %TEMP%\$F.tmp
- C:\AutoRun.inf
- C:\Kitty.jpg
- %TEMP%\$Ar.tmp
- %TEMP%\$x86.inf
- <SYSTEM32>\User32.exe
- %WINDIR%\NewFB.exe
Sets the 'hidden' attribute to the following files:
- C:\Kitty.jpg
- <Drive name for removable media>:\AutoRun.inf
- <Drive name for removable media>:\Kitty.jpg
- <SYSTEM32>\User32.exe
- %WINDIR%\NewFB.exe
- C:\AutoRun.inf
