Hello Microsoft Community,

I have been exploring the Defender for Endpoint API and noticed that it mentions the ability to fetch copies of files associated with alerts using a LiveResponse request using (GetFile). However, I’ve observed that for some alerts, Microsoft Defender quarantines the associated files. Is there a way to obtain a copy of a quarantined file or get the file itself without restoring it? Additionally, is there a way to determine if a file associated with an alert has been quarantined through the API, rather than manually logging into the Microsoft Defender for Endpoint portal?

I understand there are two common methods for restoring a file from quarantine: through the Microsoft Defender for Endpoint portal or via the command line. Both methods are detailed here: https://learn.microsoft.com/en-us/defender-endpoint/respond-file-alerts#restore-file-from-quarantine. My concern is that restoring the file will cause Defender to quarantine it again, resulting in a new alert for the same file.

In summary, is there a way to retrieve a copy of a quarantined file or the file itself without restoring it? And how can I know whether or not has been quarantined, by using the Microsoft Defender For Endpoint API or other Microsoft based API.

Thank you!

​Hello Microsoft Community, I have been exploring the Defender for Endpoint API and noticed that it mentions the ability to fetch copies of files associated with alerts using a LiveResponse request using (GetFile). However, I’ve observed that for some alerts, Microsoft Defender quarantines the associated files. Is there a way to obtain a copy of a quarantined file or get the file itself without restoring it? Additionally, is there a way to determine if a file associated with an alert has been quarantined through the API, rather than manually logging into the Microsoft Defender for Endpoint portal? I understand there are two common methods for restoring a file from quarantine: through the Microsoft Defender for Endpoint portal or via the command line. Both methods are detailed here: https://learn.microsoft.com/en-us/defender-endpoint/respond-file-alerts#restore-file-from-quarantine. My concern is that restoring the file will cause Defender to quarantine it again, resulting in a new alert for the same file. In summary, is there a way to retrieve a copy of a quarantined file or the file itself without restoring it? And how can I know whether or not has been quarantined, by using the Microsoft Defender For Endpoint API or other Microsoft based API. Thank you!  Read More

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