CybleVision Alerts Telegram Mentions

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Id	4238f545-8b6f-4f7c-80b5-14cca2cebc99
Rulename	CybleVision Alerts Telegram Mentions
Description	Detects mentions of monitored keywords across Telegram channels and groups. Extracts message content, URLs, chat metadata, user identity, and timestamps.
Severity	Low
Tactics	Reconnaissance ResourceDevelopment InitialAccess CommandAndControl
Techniques	T1598 T1585 T1102
Required data connectors	CybleVisionAlerts
Kind	Scheduled
Query frequency	30m
Query period	30m
Trigger threshold	0
Trigger operator	GreaterThan
Source Uri	https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Cyble Vision/Analytic Rules/Alerts_Telegram_Mentions.yaml
Version	1.0.0
Arm template	4238f545-8b6f-4f7c-80b5-14cca2cebc99.json

KQL

Alerts_telegram_mentions 
| where Service == "telegram_mentions" 
| extend MappedSeverity = Severity

YAML

entityMappings:
- entityType: Account
  fieldMappings:
  - identifier: Name
    columnName: TG_Username2
- entityType: URL
  fieldMappings:
  - identifier: Url
    columnName: TG_Urls
tactics:
- Reconnaissance
- ResourceDevelopment
- InitialAccess
- CommandAndControl
subTechniques: []
suppressionDuration: PT5H
requiredDataConnectors:
- dataTypes:
  - CybleVisionAlerts_CL
  connectorId: CybleVisionAlerts
alertDetailsOverride:
  alertDisplayNameFormat: CybleVision Telegram Mention in {{TG_ChatTitle}}
  alertDescriptionFormat: |
        A Telegram post mentioning monitored keywords was detected. User {{TG_Username2}}. Message {{TG_Message}} URL {{TG_Urls}}\n
  alertDynamicProperties: []
incidentConfiguration:
  groupingConfiguration:
    enabled: false
    lookbackDuration: PT5H
    reopenClosedIncident: false
    matchingMethod: AllEntities
  createIncident: true
id: 4238f545-8b6f-4f7c-80b5-14cca2cebc99
severity: Low
eventGroupingSettings:
  aggregationKind: AlertPerResult
status: Available
customDetails:
  Service: Service
  ChatTitle: TG_ChatTitle
  UpdatedDate: TG_UpdatedDate
  AlertID: AlertID
  ChatID: TG_ChatID
  Message: TG_Message
  Status: Status
  MappedSeverity: Severity
  CreatedDate: TG_CreatedDate
  Tags: TG_Tags
  URLs: TG_Urls
  User: TG_Username2
query: |
  Alerts_telegram_mentions 
  | where Service == "telegram_mentions" 
  | extend MappedSeverity = Severity  
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Cyble Vision/Analytic Rules/Alerts_Telegram_Mentions.yaml
kind: Scheduled
queryPeriod: 30m
enabled: true
version: 1.0.0
name: CybleVision Alerts Telegram Mentions
queryFrequency: 30m
triggerThreshold: 0
relevantTechniques:
- T1598
- T1585
- T1102
description: |
    'Detects mentions of monitored keywords across Telegram channels and groups. Extracts message content, URLs, chat metadata, user identity, and timestamps.'
triggerOperator: GreaterThan

ARM