Win32.HLLW.Autoruner.55919

Technical Information

To ensure autorun and distribution:

Creates the following files on removable media:

<Drive name for removable media>:\Autorun.inf
<Drive name for removable media>:\Window(s)\Quack.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)

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

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:\Window(s)\Quack.exe

Sets the 'hidden' attribute to the following files:

<Drive name for removable media>:\Window(s)\Quack.exe
<Drive name for removable media>:\Autorun.inf
C:\Window(s)\Quack.exe
C:\Autorun.inf

Miscellaneous:

Searches for the following windows:

ClassName: 'Shell_TrayWnd' WindowName: ''

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