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Win32.HLLW.Autoruner1.62187
Added to the Dr.Web virus database:
2013-12-04
Virus description added:
2013-12-06
Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'Google Updater' = 'C:\z\csrss.exe'
Creates or modifies the following files:
%HOMEPATH%\Start Menu\Programs\Startup\svchost.exe
Creates the following files on removable media:
<Drive name for removable media>:\cesr.pif
<Drive name for removable media>:\autorun.inf
Malicious functions:
To bypass firewall, removes or modifies the following registry keys:
[<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile] 'DoNotAllowExceptions' = '00000000'
[<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile] 'DisableNotifications' = '00000001'
[<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '%TEMP%\la grande distribution final.exe' = '%TEMP%\la grande distribution final.exe:*:Enabled:ipsec'
[<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile] 'EnableFirewall' = '00000000'
To complicate detection of its presence in the operating system,
forces the system hide from view:
blocks the following features:
User Account Control (UAC)
Windows Security Center
Creates and executes the following:
'%TEMP%\svchost.exe'
'%TEMP%\la grande distribution final.exe'
Executes the following:
'%WINDIR%\Microsoft.NET\Framework\v2.0.50727\cvtres.exe' /NOLOGO /READONLY /MACHINE:IX86 "/OUT:%TEMP%\RES2.tmp" "%TEMP%\vbc1.tmp"
'%WINDIR%\Microsoft.NET\Framework\v2.0.50727\vbc.exe' /noconfig @"%TEMP%\nnzyhvkg.cmdline"
Injects code into
the following system processes:
<SYSTEM32>\cscript.exe
<SYSTEM32>\ctfmon.exe
%WINDIR%\Explorer.EXE
a large number of user processes.
Modifies file system :
Creates the following files:
C:\autorun.inf
%TEMP%\nnzyhvkg.out
%TEMP%\nnzyhvkg.cmdline
C:\ypktou.exe
%TEMP%\nnzyhvkg.exe
%TEMP%\RES2.tmp
%TEMP%\vbc1.tmp
%TEMP%\nnzyhvkg.0.vb
%TEMP%\svchost.exe
%TEMP%\la grande distribution final.exe
%TEMP%\Lb.resources
%TEMP%\winrffhp.exe
%TEMP%\MSNPSharp.dll
%TEMP%\5000OVa3.resources
Sets the 'hidden' attribute to the following files:
<Drive name for removable media>:\autorun.inf
<Drive name for removable media>:\cesr.pif
C:\autorun.inf
C:\ypktou.exe
Deletes the following files:
%TEMP%\nnzyhvkg.exe
%TEMP%\nnzyhvkg.out
%TEMP%\nnzyhvkg.0.vb
%TEMP%\nnzyhvkg.cmdline
%TEMP%\vbc1.tmp
%TEMP%\svchost.exe
%TEMP%\la grande distribution final.exe
%TEMP%\RES2.tmp
%TEMP%\winrffhp.exe
Miscellaneous:
Searches for the following windows:
ClassName: 'Indicator' WindowName: '(null)'
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