Ubuntu
After running some basic enumeration, I decided to check the system root
ps c:\> dir
directory: C:\
Mode LastWriteTime Length Name
---- ------------- ------ ----
d----- 6/21/2018 3:07 PM Distros
d----- 6/21/2018 6:47 PM inetpub
d----- 6/22/2018 2:09 PM Microsoft
d----- 4/11/2018 4:38 PM PerfLogs
d----- 6/21/2018 8:15 AM php7
d-r--- 1/26/2021 2:39 AM Program Files
d-r--- 1/26/2021 2:38 AM Program Files (x86)
d----- 1/24/2023 5:29 PM tmp
d-r--- 6/21/2018 3:00 PM Users
d----- 1/26/2021 2:38 AM Windows
-a---- 6/21/2018 3:07 PM 201749452 Ubuntu.zipAt the system root, I see an archive file, Ubuntu.zip, and a directory, Distros
ps c:\Distros> dir
directory: C:\Distros
Mode LastWriteTime Length Name
---- ------------- ------ ----
d----- 1/24/2023 8:14 PM Ubuntuthe c:\Distros\ directory has a sub-directory named Ubuntu
ps c:\Distros> cd Ubuntu ; dir
directory: C:\Distros\Ubuntu
Mode LastWriteTime Length Name
---- ------------- ------ ----
d----- 6/21/2018 3:07 PM AppxMetadata
d----- 6/21/2018 3:07 PM Assets
d----- 6/21/2018 3:07 PM images
d----- 6/21/2018 5:51 PM temp
-a---- 7/11/2017 6:10 PM 190434 AppxBlockMap.xml
-a---- 7/11/2017 6:10 PM 2475 AppxManifest.xml
-a---- 7/11/2017 6:11 PM 10554 AppxSignature.p7x
-a---- 7/11/2017 6:10 PM 201254783 install.tar.gz
-a---- 7/11/2017 6:10 PM 4840 resources.pri
-a---- 7/11/2017 6:10 PM 222208 ubuntu.exe
-a---- 7/11/2017 6:10 PM 809 [Content_Types].xml This looks like an installation package for Ubuntu.
i guess that this directory is the content of the c:\Ubuntu.zip archive file.