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

description: |
    'Detects requests with different user agents from one source in short timeframe.'
kind: Scheduled
tactics:
- Persistence
- Collection
requiredDataConnectors:
- connectorId: GoogleWorkspaceReportsAPI
  dataTypes:
  - GWorkspaceActivityReports
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/GoogleWorkspaceReports/Analytic Rules/GWorkspaceDifferentUAsFromSingleIP.yaml
severity: Medium
name: GWorkspace - Multiple user agents for single source
triggerThreshold: 0
queryPeriod: 1h
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  
relevantTechniques:
- T1185
- T1176
id: 6ff0e16e-5999-11ec-bf63-0242ac130002
queryFrequency: 1h
status: Available
triggerOperator: gt
version: 1.0.1
entityMappings:
- entityType: IP
  fieldMappings:
  - columnName: IPCustomEntity
    identifier: Address

ARM