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
Techniques	T1591 T1090
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	1.0.2
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

queryPeriod: 24h
kind: Scheduled
requiredDataConnectors:
- connectorId: BitSight
  dataTypes:
  - BitSightGraphData
description: |
    'Rule helps to detect if headline ratings is drop in BitSight.'
queryFrequency: 1d
incidentConfiguration:
  createIncident: false
triggerOperator: GreaterThan
eventGroupingSettings:
  aggregationKind: AlertPerResult
query: |
  let timeframe = 24h;
  BitSightGraphData
  | where ingestion_time() > ago(timeframe)
  | where toint(RatingDifferance) < 0
  | project RatingDate, Rating, CompanyName, RatingDifferance  
name: BitSight - drop in the headline rating
id: b11fdc35-6368-4cc0-8128-52cd2e2cdda0
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/BitSight/Analytic Rules/BitSightDropInHeadlineRating.yaml
severity: High
version: 1.0.2
status: Available
relevantTechniques:
- T1591
- T1090
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}}'
triggerThreshold: 0
customDetails:
  CompanyName: CompanyName
  CompanyRating: Rating
tactics:
- Reconnaissance
- CommandAndControl

ARM