BitSight - drop in the headline rating

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Id	b11fdc35-6368-4cc0-8128-52cd2e2cdda0
Rulename	BitSight - drop in the headline rating
Description	Rule helps to detect if headline ratings is drop in BitSight.
Severity	High
Tactics	Reconnaissance CommandAndControl
Required data connectors	BitSight
Kind	Scheduled
Query frequency	1d
Query period	24h
Trigger threshold	0
Trigger operator	GreaterThan
Source Uri	https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/BitSight/Analytic Rules/BitSightDropInHeadlineRating.yaml
Version	1.0.1
Arm template	b11fdc35-6368-4cc0-8128-52cd2e2cdda0.json

KQL

let timeframe = 24h;
BitSightGraphData
| where ingestion_time() > ago(timeframe)
| where toint(RatingDifferance) < 0
| project RatingDate, Rating, CompanyName, RatingDifferance

YAML

query: |
  let timeframe = 24h;
  BitSightGraphData
  | where ingestion_time() > ago(timeframe)
  | where toint(RatingDifferance) < 0
  | project RatingDate, Rating, CompanyName, RatingDifferance  
triggerThreshold: 0
name: BitSight - drop in the headline rating
severity: High
status: Available
alertDetailsOverride:
  alertDisplayNameFormat: 'BitSight : Alert for drop in the headline rating of {{CompanyName}}.'
  alertDescriptionFormat: 'Alert is generated for {{CompanyName}}.\n\nRating Date: {{RatingDate}}\nRating Drop: {{RatingDifferance}}'
incidentConfiguration:
  createIncident: false
customDetails:
  CompanyName: CompanyName
  CompanyRating: Rating
queryPeriod: 24h
tactics:
- Reconnaissance
- CommandAndControl
requiredDataConnectors:
- connectorId: BitSight
  dataTypes:
  - BitSightGraphData
queryFrequency: 1d
version: 1.0.1
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/BitSight/Analytic Rules/BitSightDropInHeadlineRating.yaml
id: b11fdc35-6368-4cc0-8128-52cd2e2cdda0
kind: Scheduled
description: |
    'Rule helps to detect if headline ratings is drop in BitSight.'
eventGroupingSettings:
  aggregationKind: AlertPerResult
requiredTechniques:
- T1591
- T1090
triggerOperator: GreaterThan

ARM