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Create MultipleTeamsDeletes.yaml #1068

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Sep 17, 2020
Merged

Create MultipleTeamsDeletes.yaml #1068

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Create MultipleTeamsDeletes.yaml
samikroy Sep 13, 2020
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Update MultipleTeamsDeletes.yaml
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Update MultipleTeamsDeletes.yaml
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23 changes: 23 additions & 0 deletions Detections/OfficeActivity/MultipleTeamsDeletes.yaml
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id: 173f8699-6af5-484a-8b06-8c47ba89b380
name: Multiple Teams deleted by a single user
description: |
'This detection flags the occurrences of deleting multiple teams within an hour.
This data is a part of Office 365 Connector in Azure Sentinel.'
tactics:
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- Impact
relevantTechniques:
- T1485
- T1489
query: |

// Adjust this value to change how many Teams should be deleted before including
let max_delete = 3;
// Adjust this value to change the timewindow the query runs over
let time_window = 1d;
OfficeActivity
| where OfficeWorkload == "MicrosoftTeams"
| where TimeGenerated > ago(time_window)
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| where Operation =~ "MemberAdded"
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| summarize make_set(ItemName) by UserId
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| where set_ItemName > max_delete
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| extend AccountCustomEntity = UserId
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