GWorkspace - Multiple user agents for single source

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Id	6ff0e16e-5999-11ec-bf63-0242ac130002
Rulename	GWorkspace - Multiple user agents for single source
Description	Detects requests with different user agents from one source in short timeframe.
Severity	Medium
Tactics	Persistence Collection
Techniques	T1185 T1176
Required data connectors	GoogleWorkspaceReportsAPI
Kind	Scheduled
Query frequency	1h
Query period	1h
Trigger threshold	0
Trigger operator	gt
Source Uri	https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/GoogleWorkspaceReports/Analytic Rules/GWorkspaceDifferentUAsFromSingleIP.yaml
Version	1.0.1
Arm template	6ff0e16e-5999-11ec-bf63-0242ac130002.json

KQL

let threshold = 5;
GWorkspaceActivityReports
| where isnotempty(UserAgentOriginal)
| summarize user_ua = makeset(UserAgentOriginal) by SrcIpAddr, bin(TimeGenerated, 5m)
| where array_length(user_ua) > threshold
| extend IPCustomEntity = SrcIpAddr

YAML

OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/GoogleWorkspaceReports/Analytic Rules/GWorkspaceDifferentUAsFromSingleIP.yaml
query: |
  let threshold = 5;
  GWorkspaceActivityReports
  | where isnotempty(UserAgentOriginal)
  | summarize user_ua = makeset(UserAgentOriginal) by SrcIpAddr, bin(TimeGenerated, 5m)
  | where array_length(user_ua) > threshold
  | extend IPCustomEntity = SrcIpAddr  
version: 1.0.1
tactics:
- Persistence
- Collection
triggerThreshold: 0
relevantTechniques:
- T1185
- T1176
entityMappings:
- entityType: IP
  fieldMappings:
  - columnName: IPCustomEntity
    identifier: Address
kind: Scheduled
queryFrequency: 1h
name: GWorkspace - Multiple user agents for single source
description: |
    'Detects requests with different user agents from one source in short timeframe.'
queryPeriod: 1h
triggerOperator: gt
id: 6ff0e16e-5999-11ec-bf63-0242ac130002
status: Available
severity: Medium
requiredDataConnectors:
- dataTypes:
  - GWorkspaceActivityReports
  connectorId: GoogleWorkspaceReportsAPI

ARM