Link to home
Start Free TrialLog in
Avatar of Matthew Roessner
Matthew Roessner

asked on

Windows File Contents

I have a friend who has a file on her computer that is 57 GB. It is listed as a FILENAME.XLS

The friend also has another system that has two of these ".XLS files" on them with similar file names that are 932 GB and 157 GB.

The file is definitely NOT a XLS file...  

Does anyone have any ideas on how to figure out what this file is?  My initial thought is that it might be some kind of video archive or something (based only on the file size).

Avatar of BillBondo
Flag of United States of America image

I googled "opening unknown files" and see a few suggestions. Based on the size Im imagining iso files
Avatar of Matthew Roessner
Matthew Roessner


I attempted to change it to .iso - thinking the same thing.  That didn't get me anywhere....
Avatar of David Johnson, CD
David Johnson, CD
Flag of Canada image

Link to home
This solution is only available to members.
To access this solution, you must be a member of Experts Exchange.
Start Free Trial
I have the files on a USB Drive already.  The current theory is that these are video archive containers that have been encrypted.  I had previously opened up the file using a hex editor (they are too big for notepad++ to handle). The first two bytes are: 5F 45  of which I couldn't find any real information on.

I did find some metadata related to the files that suggested they may have been created with either TrueCrypt or VeraCrypt - so currently attempting to download those and see if I can get to the bottom of the mystery...