An elevation of privilege vulnerability exists when the Windows Background Intelligent Transfer Service (BITS) improperly handles symbolic links, aka 'Windows Background Intelligent Transfer Service Elevation of Privilege Vulnerability'.
https://www.cisa.gov/news-events/cybersecurity-advisories/aa24-242a
https://www.tenable.com/cyber-exposure/a-look-inside-the-ransomware-ecosystem
https://unit42.paloaltonetworks.com/lockbit-2-ransomware/
https://www.tenable.com/blog/examining-the-treat-landscape
https://www.cisa.gov/news-events/cybersecurity-advisories/aa21-209a
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-0787