Win32.HLLW.Autoruner.63883

Technical Information

To ensure autorun and distribution:

Modifies the following registry keys:

[<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'Emsisoft Anti-Malware Beta 2.exe' = '%ALLUSERSPROFILE%\Start Menu\Programs\Startup\Emsisoft Anti-Malware Beta 1.exe'
[<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'Emsisoft Anti-Malware Beta 1.exe' = '%WINDIR%\\Emsisoft Anti-Malware Beta 1.exe'

Creates or modifies the following files:

%ALLUSERSPROFILE%\Start Menu\Programs\Startup\Emsisoft Anti-Malware Beta 1.exe

Creates the following files on removable media:

<Drive name for removable media>:\Autorun.inf
<Drive name for removable media>:\$windows\Emsisoft Anti-Malware Beta 1.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:

Command Prompt (CMD)
Windows Task Manager (Taskmgr)
Registry Editor (RegEdit)

Creates and executes the following:

%WINDIR%\Emsisoft Anti-Malware Beta 1.exe

Executes the following:

<SYSTEM32>\reg.exe add HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\System /v DisableRegistryTools /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 HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer /v NoControlPanel /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 HKLM\Software\Microsoft\Windows\CurrentVersion\policies\Explorer /v NoDriveTypeAutoRun /t REG_DWORD /d :000000ff /f
<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\System /v NoDesktop /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 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_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer /v NoFolderOptions /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
<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 HKEY_CURRENT_USER\Software\Policies\Microsoft\Windows\System /v DisableCMD /t REG_DWORD /d 1 /f

Terminates or attempts to terminate

the following user processes:

opera.exe
firefox.exe
chrome.exe

Modifies settings of Windows Explorer:

[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer] 'NoControlPanel' = '00000001'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer] 'noclose' = '00000001'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer] 'NoDesktop' = '00000001'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer] 'NoRun' = '00000001'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer] 'NoFolderOptions' = '00000001'
[<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Explorer] 'NoControlPanel' = '00000001'
[<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Explorer] 'noclose' = '00000001'
[<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Explorer] 'NoFolderOptions' = '00000001'

Modifies file system :

Creates the following files:

C:\Autorun.inf
C:\$windows\Emsisoft Anti-Malware Beta 1.exe
%WINDIR%\Emsisoft Anti-Malware Beta 1.exe

Miscellaneous:

Searches for the following windows:

ClassName: 'button' WindowName: ''
ClassName: 'Shell_TrayWnd' WindowName: ''

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Technical Information