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Win32.HLLW.Autoruner2.39977
Added to the Dr.Web virus database:
2018-05-27
Virus description added:
2018-05-27
Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] '3da2cb4be08709d3bd312b17b562d40a' = '"%APPDATA%\svhost.exe" ..'
[<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] '3da2cb4be08709d3bd312b17b562d40a' = '"%APPDATA%\svhost.exe" ..'
Creates or modifies the following files:
%HOMEPATH%\Start Menu\Programs\Startup\3da2cb4be08709d3bd312b17b562d40a.exe
Creates the following files on removable media:
<Drive name for removable media>:\3da2cb4be08709d3bd312b17b562d40a.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] '%APPDATA%\svhost.exe' = '%APPDATA%\svhost.exe:*:Enabled:svhost.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 "%APPDATA%\svhost.exe" "svhost.exe" ENABLE
Modifies file system:
Creates the following files:
Sets the 'hidden' attribute to the following files:
<Drive name for removable media>:\3da2cb4be08709d3bd312b17b562d40a.exe
<Drive name for removable media>:\autorun.inf
%APPDATA%\svhost.exe
%HOMEPATH%\Start Menu\Programs\Startup\3da2cb4be08709d3bd312b17b562d40a.exe
Network activity:
Connects to:
'ro####1986.ddns.net':5553
UDP:
DNS ASK ro####1986.ddns.net
Miscellaneous:
Creates and executes the following:
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