Win32.HLLW.Autoruner2.8338
Added to the Dr.Web virus database:
2014-02-22
Virus description added:
2014-02-23
Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'loadinfo' = 'wininfo.exe'
- [<HKLM>\SOFTWARE\Microsoft\Internet Explorer\Extensions\{06926B30-226E-4f8c-8EE3-579CD96573DC}] 'Exec' = 'http://www.dmtoy.com'
Creates the following files on removable media:
- <Drive name for removable media>:\readme.doc.exe
- <Drive name for removable media>:\AUTORUN.INF
Malicious functions:
Creates and executes the following:
- '<SYSTEM32>\DirectX\DirectX.exe'
- '<SYSTEM32>\wininfo.exe'
- '<DRIVERS>\DefragFs.exe'
Executes the following:
- '<SYSTEM32>\cmd.exe' /c <SYSTEM32>\directx\abc.bat
- '%WINDIR%\regedit.exe' /s <SYSTEM32>\directx\bbb.reg
- '<SYSTEM32>\cmd.exe' /c <Current directory>\a.bat
- '<SYSTEM32>\attrib.exe' -a -r -s -h <Full path to virus>
Searches for windows to
bypass different anti-viruses:
- ClassName: 'AVP.AlertDialog' WindowName: '(null)'
Modifies file system :
Creates the following files:
- <SYSTEM32>\DirectX\abc.bat
- <SYSTEM32>\DirectX\bbb.reg
- C:\readme.doc.exe
- C:\AUTORUN.INF
- <SYSTEM32>\DirectX\DirectX.exe
- <DRIVERS>\DefragFs.exe
- <SYSTEM32>\wininfo.exe
- <Current directory>\a.bat
Sets the 'hidden' attribute to the following files:
- C:\readme.doc.exe
- <Drive name for removable media>:\AUTORUN.INF
- <Drive name for removable media>:\readme.doc.exe
- C:\AUTORUN.INF
- <DRIVERS>\DefragFs.exe
- <SYSTEM32>\wininfo.exe
- <SYSTEM32>\DirectX\DirectX.exe
Deletes the following files:
- <SYSTEM32>\DirectX\bbb.reg
- %TEMP%\~DFCE10.tmp
Deletes itself.
Miscellaneous:
Searches for the following windows:
- ClassName: '(null)' WindowName: 'ADform'
- ClassName: '(null)' WindowName: 'adupdate_onlink'
- ClassName: 'RegEdit_RegEdit' WindowName: '(null)'
- ClassName: 'Afx:400000:0' WindowName: '(null)'
- ClassName: '(null)' WindowName: 'AD_1'
- ClassName: '(null)' WindowName: '???????????-?????...'
- ClassName: '(null)' WindowName: 'AD_3'
- ClassName: '(null)' WindowName: 'AD_2'
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