SlackAudit - Empty User Agent

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Id	04528635-a5f1-438b-ab74-21ca7bc3aa32
Rulename	SlackAudit - Empty User Agent
Description	This query shows connections to the Slack Workspace with empty User Agent.
Severity	Low
Tactics	InitialAccess
Techniques	T1133
Required data connectors	SlackAuditAPI
Kind	Scheduled
Query frequency	1d
Query period	1d
Trigger threshold	0
Trigger operator	gt
Source Uri	https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/SlackAudit/Analytic Rules/SlackAuditEmptyUA.yaml
Version	1.0.0
Arm template	04528635-a5f1-438b-ab74-21ca7bc3aa32.json

KQL

SlackAudit
| where isempty(UserAgentOriginal)
| extend AccountCustomEntity = SrcUserName

YAML

OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/SlackAudit/Analytic Rules/SlackAuditEmptyUA.yaml
id: 04528635-a5f1-438b-ab74-21ca7bc3aa32
triggerThreshold: 0
triggerOperator: gt
query: |
  SlackAudit
  | where isempty(UserAgentOriginal)
  | extend AccountCustomEntity = SrcUserName  
name: SlackAudit - Empty User Agent
kind: Scheduled
tactics:
- InitialAccess
requiredDataConnectors:
- connectorId: SlackAuditAPI
  dataTypes:
  - SlackAudit_CL
relevantTechniques:
- T1133
queryFrequency: 1d
entityMappings:
- entityType: Account
  fieldMappings:
  - identifier: FullName
    columnName: AccountCustomEntity
description: |
    'This query shows connections to the Slack Workspace with empty User Agent.'
queryPeriod: 1d
version: 1.0.0
status: Available
severity: Low

ARM