Alternative Data Streams

In this lab, I will play around with alternative data streams. I was provided a disk image with a lot of files. I will use FTK Imager to try and find any data that might have been hidden in the alternative data stream.



I found some alternative file streams and looked at all of them

Here are some others I found.
There seems to be a password in this one, which I could use to unlock a a file later on.
now I found a weird jpg which was called SeceretEvidence, I tried to export it to another location and then attempted to use Exiftool on it. This did not work.



I tried putting in on cyberchef to see if one of the options could work. I tried to see which type of file it was. If maybe I could forcefully unzip it, or maybe if I could extract any files that it might have hidden inside. None of this worked so I went back to the original location of the file to play with it.

When I went back to look at the file it asked me for a password which was the same one I had previously found so I just used it and got to see the image.


This was just a simple and small lab to play around with FTKimager as well as to learn about alternative data streams.

Alternative Data Streams are a feature of the NTFS file system. ADS allows additional data to be hidden in a file without changing its size or affecting its functionality. This additional data is typically hidden.

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