Win32.HLLW.Autoruner1.31259
Added to the Dr.Web virus database:
2014-04-30
Virus description added:
2014-05-01
Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'Sys-Boot' = '%WINDIR%\Win-boot.EXE'
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'Sys32-w32' = '<SYSTEM32>\Booter.EXE'
- [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon] 'Shell' = 'Explorer.exe Win-boot.EXE'
Creates or modifies the following files:
- %WINDIR%\Tasks\At1.job
- %HOMEPATH%\Start Menu\Programs\Startup\svchost.exe
Creates the following files on removable media:
- <Drive name for removable media>:\Bloc-notes.exe
- <Drive name for removable media>:\Documents %USERNAME%_backup.exe
- <Drive name for removable media>:\RCX6.tmp
- <Drive name for removable media>:\Documents %USERNAME%.exe
- <Drive name for removable media>:\Ntldr.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
- 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:
- '%ALLUSERSPROFILE%\Application Data\Win-Fixed.exe'
- '%TEMP%\svchost.exe'
- '%TEMP%\Documents %USERNAME%.exe'
- '%ALLUSERSPROFILE%\Application Data\Win-Fixed.exe' (downloaded from the Internet)
Executes the following:
- '<SYSTEM32>\at.exe' 12:00 /interactive /EVERY:m,t,w,th,f,s,su <SYSTEM32>\Booter.EXE
- '%WINDIR%\Microsoft.NET\Framework\v2.0.50727\vbc.exe' /noconfig @"%TEMP%\ch-awhmr.cmdline"
- '%WINDIR%\Microsoft.NET\Framework\v2.0.50727\cvtres.exe' /NOLOGO /READONLY /MACHINE:IX86 "/OUT:%TEMP%\RES5.tmp" "%TEMP%\vbc4.tmp"
- '%WINDIR%\Microsoft.NET\Framework\v2.0.50727\vbc.exe' /noconfig @"%TEMP%\4fgjovxr.cmdline"
- '%WINDIR%\Microsoft.NET\Framework\v2.0.50727\cvtres.exe' /NOLOGO /READONLY /MACHINE:IX86 "/OUT:%TEMP%\RES3.tmp" "%TEMP%\vbc2.tmp"
- '<SYSTEM32>\at.exe' /delete /yes
Terminates or attempts to terminate
the following system processes:
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:
- %ALLUSERSPROFILE%\Application Data\Win-Fixed.exe
- %TEMP%\UmLpcDdGT.resources
- %TEMP%\EIFzeP.resources
- %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\U98D4X8H\regedit[1].jpg
- %WINDIR%\Win-boot.EXE
- <SYSTEM32>\Booter.EXE
- C:\Autorun.inf
- %TEMP%\vbc4.tmp
- %TEMP%\RES5.tmp
- %TEMP%\windowsupdate.ico
- %TEMP%\ch-awhmr.out
- %TEMP%\whatdafock.txt
- %TEMP%\ch-awhmr.0.vb
- %TEMP%\ch-awhmr.cmdline
- %ALLUSERSPROFILE%\Application Data\Exe_Debuger.ini
- %TEMP%\bbkwjdr
- %TEMP%\863dp.resources
- %TEMP%\MSNPSharp.dll
- %TEMP%\aut1.tmp
- %TEMP%\t.resources
- %TEMP%\Documents %USERNAME%.exe
- %TEMP%\svchost.exe
- %TEMP%\RES3.tmp
- %TEMP%\4fgjovxr.exe
- %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\KHMHGZ4F\Exe_Debuger[1].ini
- %TEMP%\vbc2.tmp
- %TEMP%\4fgjovxr.0.vb
- %TEMP%\4fgjovxr.cmdline
- %TEMP%\4fgjovxr.out
Sets the 'hidden' attribute to the following files:
- C:\Autorun.inf
- %ALLUSERSPROFILE%\Application Data\Win-Fixed.exe
- <Drive name for removable media>:\Autorun.inf
- C:\Ntldr.EXE
- %WINDIR%\Win-boot.EXE
- <SYSTEM32>\Booter.EXE
Deletes the following files:
- %TEMP%\ch-awhmr.cmdline
- %TEMP%\ch-awhmr.out
- %TEMP%\vbc4.tmp
- %TEMP%\ch-awhmr.0.vb
- %TEMP%\UmLpcDdGT.resources
- %TEMP%\windowsupdate.ico
- <Drive name for removable media>:\Documents %USERNAME%.exe
- %TEMP%\EIFzeP.resources
- <Drive name for removable media>:\Documents %USERNAME%_backup.exe
- %TEMP%\RES5.tmp
- %TEMP%\RES3.tmp
- %TEMP%\vbc2.tmp
- %TEMP%\aut1.tmp
- %TEMP%\bbkwjdr
- %TEMP%\4fgjovxr.exe
- %TEMP%\4fgjovxr.cmdline
- <Drive name for removable media>:\Autorun.inf
- %TEMP%\4fgjovxr.0.vb
- %TEMP%\4fgjovxr.out
Network activity:
Connects to:
- '17#.#3.169.14':80
- 'h1.##pway.com':80
TCP:
HTTP GET requests:
- h1.##pway.com/up/apps/regedit.jpg
- h1.##pway.com/up/apps/Exe_Debuger.ini
UDP:
Miscellaneous:
Searches for the following windows:
- ClassName: 'Indicator' WindowName: '(null)'
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