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

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

ARM