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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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