User Email Submissions (FN) - Top Detection Overrides by Users

id: 764c0e82-33af-4694-a552-b2de24d1d477
name: User Email Submissions (FN) - Top Detection Overrides by Users
description: |
  This query visualises emails submitted as false negatives by users where emails were already detected by MDO but there was a policy override.
description-detailed: |
  This query visualises emails submitted as false negatives by users where emails were already detected by MDO but there was a policy override configured by the end-user (mailbox-level).
  Query is also included as part of the Defender for Office 365 solution in Sentinel: https://techcommunity.microsoft.com/blog/microsoftdefenderforoffice365blog/part-2-build-custom-email-security-reports-and-dashboards-with-workbooks-in-micr/4411303
requiredDataConnectors:
- connectorId: MicrosoftThreatProtection
  dataTypes:
  - CloudAppEvents
  - EmailEvents
tactics:
  - InitialAccess
relevantTechniques:
  - T1566
query: |
  CloudAppEvents 
  | where ActionType == "UserSubmission"
  | extend SubmissionType = tostring((parse_json(RawEventData)).SubmissionType),SubmissionContentType=tostring((parse_json(RawEventData)).SubmissionContentType), RecipientObjectId=AccountObjectId
  | extend User_SubmissionType=
  iff(SubmissionType == "1" and ActionType == "UserSubmission" and SubmissionContentType=="Mail","User_Phish_FN",
  iff(SubmissionType == "0" and ActionType == "UserSubmission" and SubmissionContentType=="Mail","User_Spam_FN","Other")),
  NetworkMessageId=tostring((parse_json(RawEventData).ObjectId))
  | where SubmissionContentType == "Mail" and SubmissionType in ("1","0")
  | join EmailEvents on NetworkMessageId, RecipientObjectId
  | where ThreatTypes !=""and UserLevelAction!=""
  | summarize count() by UserLevelAction, UserLevelPolicy,ThreatTypes,User_SubmissionType
  | project UserLevelAction, UserLevelPolicy,ThreatTypes,User_SubmissionType, UserSubmissions = count_
  | top 10 by UserSubmissions desc
version: 1.0.0