Bitglass - User Agent string has changed for user

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Id	4dd61530-859f-49e7-bd27-a173cb1a4589
Rulename	Bitglass - User Agent string has changed for user
Description	Detects when User Agent string has changed for user.
Severity	Medium
Tactics	InitialAccess
Techniques	T1078
Required data connectors	Bitglass
Kind	Scheduled
Query frequency	1h
Query period	14d
Trigger threshold	0
Trigger operator	gt
Source Uri	https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Bitglass/Analytic Rules/BitglassUserUAChanged.yaml
Version	1.0.0
Arm template	4dd61530-859f-49e7-bd27-a173cb1a4589.json

KQL

Bitglass
| where EventType =~ 'access'
| where EventMessage =~ 'Login'
| summarize ua = makeset(HttpUserAgent) by User
| join (Bitglass
        | where EventType =~ 'access'
        | where EventMessage =~ 'Login') on User
| where ua !contains HttpUserAgent
| extend AccountCustomEntity = User

YAML

requiredDataConnectors:
- dataTypes:
  - Bitglass
  connectorId: Bitglass
queryPeriod: 14d
triggerThreshold: 0
queryFrequency: 1h
version: 1.0.0
status: Available
severity: Medium
description: |
    'Detects when User Agent string has changed for user.'
name: Bitglass - User Agent string has changed for user
entityMappings:
- fieldMappings:
  - identifier: Name
    columnName: AccountCustomEntity
  entityType: Account
triggerOperator: gt
id: 4dd61530-859f-49e7-bd27-a173cb1a4589
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Bitglass/Analytic Rules/BitglassUserUAChanged.yaml
tactics:
- InitialAccess
relevantTechniques:
- T1078
kind: Scheduled
query: |
  Bitglass
  | where EventType =~ 'access'
  | where EventMessage =~ 'Login'
  | summarize ua = makeset(HttpUserAgent) by User
  | join (Bitglass
          | where EventType =~ 'access'
          | where EventMessage =~ 'Login') on User
  | where ua !contains HttpUserAgent
  | extend AccountCustomEntity = User

ARM