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Win32.HLLW.Autoruner.58597
Added to the Dr.Web virus database:
2011-09-11
Virus description added:
2011-09-11
Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon] 'Shell' = 'Explorer.exe CTFMON.EXE'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\autoruns.exe] 'debugger' = '<SYSTEM32>\AUTOCONVE.EXE'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'ANLEAP' = '%WINDIR%\ANLEAP.EXE'
[<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'AUTOCONVE' = '<SYSTEM32>\AUTOCONVE.EXE'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\procexp.exe] 'debugger' = '<SYSTEM32>\AUTOCONVE.EXE'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\regedit.exe] 'debugger' = '<SYSTEM32>\AUTOCONVE.EXE'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\taskmgr.exe] 'debugger' = '<SYSTEM32>\AUTOCONVE.EXE'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\mmc.exe] 'debugger' = '<SYSTEM32>\AUTOCONVE.EXE'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\msconfig.exe] 'debugger' = '<SYSTEM32>\AUTOCONVE.EXE'
Creates the following files on removable media:
<Drive name for removable media>:\Autorun.inf
<Drive name for removable media>:\CTFMON.EXE
<Drive name for removable media>:\Documents %USERNAME%.exe
Malicious functions:
To complicate detection of its presence in the operating system,
forces the system hide from view:
hidden files
file extensions
blocks execution of the following system utilities:
Windows Task Manager (Taskmgr)
Registry Editor (RegEdit)
blocks the following features:
Creates and executes the following:
"%TEMP%\ctfmon.exe" (downloaded from the Internet)
Executes the following:
<SYSTEM32>\at.exe 12:00 /interactive /EVERY:m,t,w,th,f,s,su <SYSTEM32>\AUTOCONVE.EXE
<SYSTEM32>\at.exe /delete /yes
Modifies settings of Windows Explorer:
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer] 'NoRun' = '00000001'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer] 'NoFind' = '00000001'
[<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Explorer] 'NoFolderOptions' = '00000001'
Forces autoplay for removable media.
Modifies file system :
Creates the following files:
C:\Autorun.inf
<SYSTEM32>\AUTOCONVE.EXE
%TEMP%\ctfmon.exe
%HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\69I9OPW5\regedit[1].scr
%TEMP%\vqbqamv
%TEMP%\aut1.tmp
%WINDIR%\ANLEAP.EXE
C:\CTFMON.EXE
Sets the 'hidden' attribute to the following files:
C:\Autorun.inf
%TEMP%\ctfmon.exe
<Drive name for removable media>:\Autorun.inf
C:\CTFMON.EXE
%WINDIR%\ANLEAP.EXE
<SYSTEM32>\AUTOCONVE.EXE
Deletes the following files:
<Drive name for removable media>:\Autorun.inf
%TEMP%\vqbqamv
%TEMP%\aut1.tmp
Network activity:
Connects to:
TCP:
HTTP GET requests:
h1.##pway.com/up/apps/regedit.scr
UDP:
Miscellaneous:
Searches for the following windows:
ClassName: 'Indicator' WindowName: ''
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