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Windows event log · Microsoft-Windows-Ntfs/Operational142 NTFS-formatted drive attached

Free space and volume name of the attached drive can be derived from this event.

  • Windows operational
  • 4 fields
  • Microsoft-Windows-Ntfs%4Operational.evtx
  • Microsoft-Windows-Ntfs

Notes

  • Free space and volume name of the attached drive can be derived from this event.
  • Events are created during the first connection since the startup.
  • So if the user removes the drive and attaches it again no new logs are going to be made according to my investigation.

Fields EvtxECmd extracts

4 columns in the EvtxECmd CSV

  • PayloadData1VolumeName: %VolumeName%
    • %VolumeName% = /Event/EventData/Data[@Name="VolumeName"]
  • PayloadData2IsBootVolume: %IsBootVolume%
    • %IsBootVolume% = /Event/EventData/Data[@Name="IsBootVolume"]
  • PayloadData3LowestFreeSpaceInBytes: %LowestFreeSpaceInBytes%
    • %LowestFreeSpaceInBytes% = /Event/EventData/Data[@Name="LowestFreeSpaceInBytes"]
  • PayloadData4HighestFreeSpaceInBytes: %HighestFreeSpaceInBytes%
    • %HighestFreeSpaceInBytes% = /Event/EventData/Data[@Name="HighestFreeSpaceInBytes"]

Sample event

Event XML from the map file

<Event>
  <System>
    <Provider Name="Microsoft-Windows-Ntfs" Guid="3ff37a1c-a68d-43de-8c9b-f79e8b16c482"/>
    <EventID>142</EventID>
    <Version>0</Version>
    <Level>4</Level>
    <Task>0</Task>
    <Opcode>0</Opcode>
    <Keywords>0x4000000000200900</Keywords>
    <TimeCreated SystemTime="2020-10-13 06:11:22.2517941"/>
    <EventRecordID>385</EventRecordID>
    <Correlation/>
    <Execution ProcessID="4" ThreadID="27824"/>
    <Channel>Microsoft-Windows-Ntfs/Operational</Channel>
    <Computer>HOSTNAME.domain.com</Computer>
    <Security/>
  </System>
  <EventData>
    <Data Name="VolumeGuid">6f349c04-b41a-4cb0-91bb-8c7742123937</Data>
    <Data Name="VolumeNameLength">48</Data>
    <Data Name="VolumeName">\\?\Volume{6f349c04-b41a-4cb0-91bb-8c7742123937}</Data>
    <Data Name="LowestFreeSpaceInBytes">132669440</Data>
    <Data Name="HighestFreeSpaceInBytes">132669440</Data>
    <Data Name="IsBootVolume">False</Data>
  </EventData>
</Event>

References

2 links

Source: evtx/Maps/Microsoft-Windows-Ntfs-Operational_Microsoft-Windows-Ntfs_142.map(opens in new tab) by Andrew Rathbun and contributors(opens in new tab), MIT License(opens in new tab)