Win32.HLLW.Autoruner1.35532
Added to the Dr.Web virus database:
2013-04-24
Virus description added:
2013-05-01
Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'Winlogon' = '%WINDIR%\winlogon.exe'
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'Winlogon' = '%WINDIR%\winlogon.exe'
Creates the following files on removable media:
- <Drive name for removable media>:\autorun.inf
- <Drive name for removable media>:\autorun.exe
Malicious functions:
Creates and executes the following:
- '%WINDIR%\winhelp32.exe'
- '%WINDIR%\winlogon.exe'
- '%WINDIR%\winhelp32.exe' (downloaded from the Internet)
Modifies file system :
Creates the following files:
- %TEMP%\a85.exe
- %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\2VAZY7AN\VERSION[1].TXT
- %WINDIR%\version.txt
- %WINDIR%\winhelp32.exe
- %WINDIR%\winlogon.exe
- %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\KHMHGZ4F\default2[1].html
- %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\U98D4X8H\DATA[1]
Sets the 'hidden' attribute to the following files:
- <Drive name for removable media>:\autorun.exe
- <Drive name for removable media>:\autorun.inf
Network activity:
Connects to:
- 'tu###eru.net':80
- 'tu###eru.org':80
- 'localhost':1036
- 'in####.powweb.com':80
TCP:
HTTP GET requests:
- tu###eru.org/VERSION.TXT
- tu###eru.net/DATA
- in####.powweb.com/default2.html
UDP:
- DNS ASK tu###eru.org
- DNS ASK tu###eru.net
- DNS ASK in####.powweb.com
Miscellaneous:
Searches for the following windows:
- ClassName: 'MS_AutodialMonitor' WindowName: ''
- ClassName: 'MS_WebcheckMonitor' WindowName: ''
- ClassName: 'Shell_TrayWnd' WindowName: ''
- ClassName: 'Indicator' WindowName: ''
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