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[BUG] Missing fields for Detection: Windows Event Log Cleared #4000

@AndreiBanaru

Description

@AndreiBanaru

For the Windows Event Log Cleared detection, some of the fields won't be available, and some results will be missed.

I'm refering to:

  • app
  • name
  • object_attrs
  • signature
  • src_user
  • subject

which don't appear when source=XmlWinEventLog:System EventCode=104 .

I've checked the Splunk_TA_windows add-on and at least for name, signature and subject these come from the windows_signatures_910.csv doesn't have the 104 signature_id in it.

The app field comes from the windows_apps.csv as an enrichment and there is no association for it to be populated since neither EventCode=104 or source=XmlWinEventLog:System are present.

I'm not an expert in attack_data but I believe tests passed because the data has both XmlWinEventLog:System and XmlWinEventLog:Security events in it, and it gives a result for the XmlWinEventLog:Security, which the tests consider sufficient.

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