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Win32.HLLW.Autoruner.58220
Added to the Dr.Web virus database:
2011-09-06
Virus description added:
2011-09-06
Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'grnus' = '%HOMEPATH%\grnus.exe /H'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'Sxikihuvuw' = 'rundll32.exe "%WINDIR%\diapupic.dll",Startup'
[<HKLM>\SYSTEM\ControlSet001\Control\Print\Providers\2337320384] 'Name' = '"%TEMP%\2.tmp"'
Creates the following files on removable media:
<Drive name for removable media>:\grnus.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:
Creates and executes the following:
%HOMEPATH%\wio.exe
%HOMEPATH%\grnus.exe
%HOMEPATH%\vdYf1f3jZu.exe
%HOMEPATH%\win.exe
Executes the following:
<SYSTEM32>\rundll32.exe "%WINDIR%\diapupic.dll",iep
<SYSTEM32>\rundll32.exe "%WINDIR%\diapupic.dll",Startup
Injects code into
the following system processes:
Modifies settings of Windows Internet Explorer:
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] '1208' = '00000000'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] '1200' = '00000000'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] '1001' = '00000000'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] '2000' = '00000000'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] '1405' = '00000000'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] '1209' = '00000000'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] '1400' = '00000000'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] '1601' = '00000000'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] 'currentlevel' = '00000000'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] '{A8A88C49-5EB2-4990-A1A2-0876022C854F}' = ''
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] '{AEBA21FA-782A-4A90-978D-B72164C80120}' = ''
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] '1A10' = '00000000'
Modifies file system :
Creates the following files:
%TEMP%\1.tmp
%HOMEPATH%\grnus.exe
%WINDIR%\Temp\3.tmp
%WINDIR%\diapupic.dll
%HOMEPATH%\vdYf1f3jZu.exe
%HOMEPATH%\win.exe
%HOMEPATH%\wio.exe
Sets the 'hidden' attribute to the following files:
<Drive name for removable media>:\autorun.inf
%HOMEPATH%\grnus.exe
Deletes the following files:
%WINDIR%\Temp\3.tmp
<DRIVERS>\etc\hosts
%TEMP%\2.tmp
Deletes itself.
Miscellaneous:
Searches for the following windows:
ClassName: 'Indicator' WindowName: ''
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