A per-user Windows Run key can reference an executable on an SMB UNC path. At each user logon, Windows attempts to start it under that user's permissions; success depends on the file server being reachable and the user having share and file-system read/execute access at that time. This variant uses a harmless, authorized test binary.
Variant:
Copy an assessment file to a POSIX host
powershell
RESTRICTED_ACCESS_BLUR_MARKER
RESTRICTED_ACCESS_BLUR_MARKER
RESTRICTED_ACCESS_BLUR_MARKER
RESTRICTED_ACCESS_BLUR_MARKER