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Win32.HLLW.Autoruner2.40730
Added to the Dr.Web virus database:
2018-06-24
Virus description added:
2018-06-24
Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] '6f72d32ad5e9d21abc325fc660e8678a' = '"%TEMP%\server.exe" ..'
[<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] '6f72d32ad5e9d21abc325fc660e8678a' = '"%TEMP%\server.exe" ..'
Creates or modifies the following files:
%HOMEPATH%\Start Menu\Programs\Startup\6f72d32ad5e9d21abc325fc660e8678a.exe
Creates the following files on removable media:
<Drive name for removable media>:\6f72d32ad5e9d21abc325fc660e8678a.exe
<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\AuthorizedApplications\List] '%TEMP%\server.exe' = '%TEMP%\server.exe:*:Enabled:server.exe'
To complicate detection of its presence in the operating system,
forces the system hide from view:
Executes the following:
'<SYSTEM32>\netsh.exe' firewall add allowedprogram "%TEMP%\server.exe" "server.exe" ENABLE
Modifies file system:
Creates the following files:
Sets the 'hidden' attribute to the following files:
<Drive name for removable media>:\6f72d32ad5e9d21abc325fc660e8678a.exe
<Drive name for removable media>:\autorun.inf
%TEMP%\server.exe
%HOMEPATH%\Start Menu\Programs\Startup\6f72d32ad5e9d21abc325fc660e8678a.exe
Network activity:
Connects to:
UDP:
DNS ASK sy####x.hopto.org
Miscellaneous:
Creates and executes the following:
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