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Win32.HLLW.Autoruner1.35867
Added to the Dr.Web virus database:
2013-04-28
Virus description added:
2013-05-03
Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'winlogon' = 'C:\Config\system.exe'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run] 'winlogon' = 'C:\Config\system.exe'
Creates the following files on removable media:
<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:
'C:\Config\sys.exe'
'C:\Config\system.exe'
'%TEMP%\RarSFX0\first.exe'
Modifies file system :
Creates the following files:
C:\Config\system.exe
%TEMP%\RarSFX0\system.exe
C:\Config\child\autorun.inf
C:\Config\sys.exe
%TEMP%\RarSFX0\child\autorun.inf
%TEMP%\RarSFX0\drivelist.txt
%TEMP%\RarSFX0\sys.exe
%TEMP%\RarSFX0\first.exe
Sets the 'hidden' attribute to the following files:
C:\Config\sys.exe
C:\Config\system.exe
%TEMP%\RarSFX0\child\autorun.inf
C:\Config\child\autorun.inf
Deletes the following files:
%TEMP%\RarSFX0\system.exe
%TEMP%\RarSFX0\child\autorun.inf
%TEMP%\RarSFX0\sys.exe
%TEMP%\RarSFX0\drivelist.txt
%TEMP%\RarSFX0\first.exe
Miscellaneous:
Searches for the following windows:
ClassName: 'AutoHotkey' WindowName: 'C:\Config\sys.exe'
ClassName: '#32771' WindowName: ''
ClassName: 'Indicator' WindowName: ''
ClassName: 'AutoHotkey' WindowName: 'C:\Config\system.exe'
ClassName: 'EDIT' WindowName: ''
ClassName: 'Shell_TrayWnd' WindowName: ''
ClassName: 'AutoHotkey' WindowName: '%TEMP%\RarSFX0\first.exe'
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