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Win32.HLLW.Autoruner1.20305
Added to the Dr.Web virus database:
2012-07-14
Virus description added:
2012-08-04
Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
[<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'Windefender' = '%APPDATA%\Windefender.exe'
Creates the following files on removable media:
<Drive name for removable media>:\obayg.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] 'DisableNotifications' = '00000001'
[<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '%APPDATA%\Windefender.exe' = '%APPDATA%\Windefender.exe:*:Enabled:ipsec'
[<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile] 'DoNotAllowExceptions' = '00000000'
[<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '<Full path to virus>' = '<Full path to virus>:*: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:
%APPDATA%\Windefender.exe
Injects code into
the following system processes:
a large number of user processes.
Modifies file system :
Creates the following files:
%TEMP%\winuugf.exe
C:\autorun.inf
C:\pogos.exe
%APPDATA%\Windefender.exe
<DRIVERS>\fhsgf.sys
%TEMP%\xjqvfw.exe
Sets the 'hidden' attribute to the following files:
<Drive name for removable media>:\autorun.inf
<Drive name for removable media>:\obayg.pif
C:\autorun.inf
C:\pogos.exe
Deletes the following files:
%TEMP%\winuugf.exe
%TEMP%\xjqvfw.exe
<DRIVERS>\fhsgf.sys
Network activity:
Connects to:
'sa####ka.no-ip.biz':9090
UDP:
DNS ASK sa####ka.no-ip.biz
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