Skip to content

Create MultipleTeamsDeletes.yaml #1068

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
Shain (shainw) merged 6 commits into from
Sep 17, 2020
Merged

Create MultipleTeamsDeletes.yaml #1068

Changes from 3 commits
Commits
Show all changes
6 commits
Select commit Hold shift + click to select a range
7295f55
Create MultipleTeamsDeletes.yaml
samikroy Sep 13, 2020
07cda89
Update MultipleTeamsDeletes.yaml
samikroy Sep 13, 2020
4e13190
Update MultipleTeamsDeletes.yaml
samikroy Sep 13, 2020
70f4306
Update MultipleTeamsDeletes.yaml
samikroy Sep 17, 2020
83cc167
Update MultipleTeamsDeletes.yaml
samikroy Sep 17, 2020
fb1b2a0
Update MultipleTeamsDeletes.yaml
samikroy Sep 17, 2020
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
23 changes: 23 additions & 0 deletions Detections/OfficeActivity/MultipleTeamsDeletes.yaml
View file
Open in desktop
Original file line number Diff line number Diff line change
@@ -0,0 +1,23 @@
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:
Comment thread
samikroy marked this conversation as resolved.
- 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)
Comment thread
samikroy marked this conversation as resolved.
Outdated
| where Operation =~ "MemberAdded"
Comment thread
samikroy marked this conversation as resolved.
Outdated
| summarize make_set(ItemName) by UserId
Comment thread
samikroy marked this conversation as resolved.
Outdated
| where set_ItemName > max_delete
Comment thread
samikroy marked this conversation as resolved.
Outdated
| extend AccountCustomEntity = UserId
Comment thread
samikroy marked this conversation as resolved.
Outdated