T1628.003 Conceal Multimedia Files
sub-techniqueMobileAdversaries may attempt to hide multimedia files from the user. By doing so, adversaries may conceal captured files, such as pictures, videos and/or screenshots, then later exfiltrate those files. Specific to Android devices, if the `.nomedia` file is present in a folder, multimedia files in that folder will not be visible to the user in the Gallery application. Additionally, other applications are asked not to scan the folder with the `.nomedia` file, effectively making the folder appear invisible to the user. This technique is often used by stalkerware and spyware applications.
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