Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'Yahoo Messenger' = '<SYSTEM32>\Jumoong4.avi.exe'
Creates the following files on removable media:
- <Drive name for removable media>:\Jumoong4.avi.exe
- <Drive name for removable media>:\autorun.inf
Malicious functions:
To complicate detection of its presence in the operating system,
forces the system hide from view:
- hidden files
blocks execution of the following system utilities:
- Windows Task Manager (Taskmgr)
- Registry Editor (RegEdit)
Creates and executes the following:
- <Drive name for removable media>:\Jumoong4.avi.exe
- C:\Jumoong4.avi.exe
- <SYSTEM32>\Jumoong4.avi.exe
Modifies settings of Windows Explorer:
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer] 'NoRun' = '00000001'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer] 'NoFolderOptions' = '00000001'
Sets a new unauthorized home page for Windows Internet Explorer.
Modifies file system :
Creates the following files:
- C:\Jumoong4.avi.exe
- %TEMP%\~DF29D6.tmp
- %TEMP%\~DF9D2F.tmp
- <SYSTEM32>\Jumoong4.avi.exe
- C:\autorun.inf
Sets the 'hidden' attribute to the following files:
- <Drive name for removable media>:\autorun.inf
- <Drive name for removable media>:\Jumoong4.avi.exe
- <SYSTEM32>\Jumoong4.avi.exe
- C:\autorun.inf
Deletes the following files:
- %TEMP%\~DF990F.tmp
- %TEMP%\~DFB5A0.tmp
- %TEMP%\~DFF0D1.tmp
- %TEMP%\~DFAFCC.tmp
Miscellaneous:
Searches for the following windows:
- ClassName: '' WindowName: 'System Configuration Utility'
- ClassName: '' WindowName: 'Folder Options'
- ClassName: '' WindowName: 'Registry Editor'
- ClassName: '' WindowName: 'Windows Task Manager'
- ClassName: '' WindowName: 'Control Panel'
- ClassName: '' WindowName: 'Setup'
- ClassName: '' WindowName: 'Panda Global Protection 2009 Setup'
- ClassName: 'Shell_TrayWnd' WindowName: ''
- ClassName: '' WindowName: 'avast! Antivirus Setup'
- ClassName: '' WindowName: 'Kaspersky Anti-Virus 2009'
- ClassName: '' WindowName: 'ESET NOD32 Antivirus Setup'
- ClassName: '' WindowName: 'Anti virus'
- ClassName: '' WindowName: 'My Computer'
- ClassName: '' WindowName: 'Copying...'
- ClassName: '' WindowName: 'System Restore'
- ClassName: '' WindowName: 'Search Results'
- ClassName: '' WindowName: 'User Accounts'
- ClassName: '' WindowName: 'Moving...'
- ClassName: '' WindowName: 'Run'
- ClassName: '' WindowName: 'Antivirus'
- ClassName: '' WindowName: 'Media'
- ClassName: '' WindowName: 'System32'
- ClassName: '' WindowName: 'WINDOWS'