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Win32.HLLW.Autoruner2.41425
Added to the Dr.Web virus database:
2018-07-12
Virus description added:
2018-07-12
Technical Information
To ensure autorun and distribution:
Changes the following executable system files:
Creates the following files on removable media:
<Drive name for removable media>:\Umbrella.flv.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] '<Full path to file>' = '<Full path to file>:*:Enabled:<File name>.exe'
Executes the following:
'<SYSTEM32>\netsh.exe' firewall add allowedprogram "<Full path to file>" "<File name>.exe" ENABLE
Modifies file system:
Creates the following files:
%APPDATA%\app
C:\Umbrella.flv.exe
C:\autorun.inf
%TEMP%\StUpdate.exe
Sets the 'hidden' attribute to the following files:
<Full path to file>
C:\autorun.inf
C:\Umbrella.flv.exe
<Drive name for removable media>:\autorun.inf
<Drive name for removable media>:\Umbrella.flv.exe
Miscellaneous:
Executes the following:
'<SYSTEM32>\netsh.exe' firewall delete allowedprogram "<Full path to file>"
'<SYSTEM32>\schtasks.exe' /create /sc minute /mo 1 /tn StUpdate /tr %HOMEPATH%\Local Settings\Temp/StUpdate.exe
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