Detection rules › Kusto

Flare cloud bucket results

This is a third-party alert feed, not a detection over modeled telemetry. The vendor product raised the finding; this rule forwards it into the SIEM. It is searchable for reference but is excluded from the detection-rule browse and the ATT&CK coverage matrix.

Status: available
Severity: medium
Time window: 1h
Source: github.com/Azure/Azure-Sentinel

'This query searches for events related to publicly available cloud bucket.'

MITRE ATT&CK coverage

Tactic	Techniques
Reconnaissance	`T1593` Search Open Websites/Domains

Rule body

id: 9cb7c337-f172-4af6-b0e8-b6b7552d762d
name: Flare cloud bucket results
description: |
    'This query searches for events related to publicly available cloud bucket.'
severity: Medium
status: Available
requiredDataConnectors:
  - connectorId: Flare
    dataTypes:
      - FireworkV2_CL
queryFrequency: 1h
queryPeriod: 1h
triggerOperator: gt
triggerThreshold: 0
tactics:
  - Reconnaissance
relevantTechniques:
  - T1593
query: |
  FireworkV2_CL
  | where notempty(uid) and RiskScore >= 3
  | extend index_name = split(uid, "/")[0]
  | where index_name == "driller_bucket_object" or index_name == "bucket"
version: 3.0.0
kind: Scheduled

Stages and Predicates

Stage 1: `source`

FireworkV2_CL

Stage 2: `where`

| where notempty(uid) and RiskScore >= 3

Stage 3: `extend`

| extend index_name = split(uid, "/")[0]

Stage 4: `where`

| where index_name == "driller_bucket_object" or index_name == "bucket"

Indicators

These rows show field, operator, and value matches.

Field	Kind	Values	Search
`RiskScore`	ge	`3`	`field:"RiskScore" kind:ge value:"3"`
`index_name`	eq	`bucket` `driller_bucket_object`	`field:"index_name" kind:eq`
`uid`	is_not_null	(no value, null check)	`field:"uid" kind:is_not_null`

Output fields

These fields are emitted when the rule matches.

Field	Source
`index_name`	`extend`