Win32.HLLW.Autoruner2.29063

Added to the Dr.Web virus database: 2017-08-16

Virus description added: 2017-08-15

To ensure autorun and distribution:

Modifies the following registry keys:

[<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] '1c94bd434dea79bf63edb27b13821e88' = '"%APPDATA%\mscore3.exe" ..'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] '1c94bd434dea79bf63edb27b13821e88' = '"%APPDATA%\mscore3.exe" ..'

Creates or modifies the following files:

Creates the following files on removable media:

Malicious functions:

To bypass firewall, removes or modifies the following registry keys:

[<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '%APPDATA%\mscore3.exe' = '%APPDATA%\mscore3.exe:*:Enabled:mscore3.exe'

To complicate detection of its presence in the operating system,

forces the system hide from view:

Creates and executes the following:

Executes the following:

'<SYSTEM32>\netsh.exe' firewall add allowedprogram "%APPDATA%\mscore3.exe" "mscore3.exe" ENABLE

Modifies file system:

Creates the following files:

Sets the 'hidden' attribute to the following files:

Network activity:

Connects to:

UDP: