An elevation of privilege vulnerability exists when Windows improperly handles calls to Advanced Local Procedure Call (ALPC), aka "Windows ALPC Elevation of Privilege Vulnerability." This affects Windows 7, Windows Server 2012 R2, Windows RT 8.1, Windows Server 2008, Windows Server 2012, Windows 8.1, Windows Server 2016, Windows Server 2008 R2, Windows 10, Windows 10 Servers.
https://www.tenable.com/cyber-exposure/a-look-inside-the-ransomware-ecosystem
https://www.acronis.com/en-us/blog/posts/sodinokibi-ransomware/
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8440
https://blog.0patch.com/2018/09/comparing-our-micropatch-with.html
https://blog.0patch.com/2018/08/how-we-micropatched-publicly-dropped.html