Win32.HLLW.Autoruner1.36024
Added to the Dr.Web virus database:
2013-05-01
Virus description added:
2013-05-05
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:
- %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\YPORKZYZ\VERSION[1].TXT
- %WINDIR%\cssrs.exe
- %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\U98D4X8H\SYN[1]
- %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\KHMHGZ4F\VERSION[1].TXT
- %WINDIR%\ssms.exe
- %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\2VAZY7AN\DOZ[1]
- %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\KHMHGZ4F\DATA[1]
- %WINDIR%\winlogon.exe
- %WINDIR%\winhelp32.exe
- %WINDIR%\version.txt
- %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\U98D4X8H\VERSION[1].TXT
Sets the 'hidden' attribute to the following files:
- <Drive name for removable media>:\autorun.exe
- <Drive name for removable media>:\autorun.inf
Deletes the following files:
- %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\YPORKZYZ\VERSION[1].TXT
- %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\U98D4X8H\VERSION[1].TXT
Network activity:
Connects to:
- 'tu###eru.org':80
- 'tu###eru.net':80
- 'localhost':1035
TCP:
HTTP GET requests:
- tu###eru.net/DOZ
- tu###eru.net/SYN
- tu###eru.net/DATA
- tu###eru.org/VERSION.TXT
UDP:
- DNS ASK tu###eru.org
- DNS ASK tu###eru.net
Miscellaneous:
Searches for the following windows:
- ClassName: 'Shell_TrayWnd' WindowName: ''
- ClassName: 'Indicator' WindowName: ''
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