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Cyble Vision Alerts Pastebin

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
low
Time window
30m
Source
github.com/Azure/Azure-Sentinel

'Cyble detected a paste containing references to monitored keywords or domains. Pastebin/Gist exposure may indicate data leakage or threat actor activity referencing the organization.'

MITRE ATT&CK coverage

TacticTechniques
ReconnaissanceT1591 Gather Victim Org Information

Rule body kusto

id: dd37e041-3973-482a-aa8c-f484b4178940
name: Cyble Vision Alerts Pastebin
description: |
  'Cyble detected a paste containing references to monitored keywords or domains. Pastebin/Gist exposure may indicate data leakage or threat actor activity referencing the organization.'
severity: Low
status: Available
requiredDataConnectors:
- connectorId: CybleVisionAlerts
  dataTypes:
  - CybleVisionAlerts_CL
enabled: true
queryfrequency: 30m
queryPeriod: 30m
triggerOperator: GreaterThan
triggerThreshold: 0
eventGroupingSettings:
  aggregationKind: AlertPerResult
tactics:
- Reconnaissance
relevantTechniques:
- T1591
query: |
  Alerts_pastebin  
  | where Service == "pastebin" 
  | extend MappedSeverity = Severity
incidentConfiguration:
  createIncident: true
  groupingConfiguration:
    enabled: false
    reopenClosedIncident: false
    lookbackDuration: PT5H
    matchingMethod: AllEntities
  alertDetailsOverride:
  alertDisplayNameFormat: Pastebin/Gist Exposure for Keyword {{KeywordName}}
  alertDescriptionFormat: |
    A public paste has been detected referencing monitored keyword {{KeywordName}}. Paste Author {{PB_Author}}. URL {{PB_Data_URL}}. This may indicate sensitive information exposure or monitoring by external actors.
customDetails:
  MappedSeverity: Severity
  Status: Status
  AlertID: AlertID
  Service: Service
  PasteAuthor: PB_Author
  PasteUpdatedOn: PB_ContentUpdatedOn
  PasteURL: PB_Data_URL
  PasteID: PB_Data_PasteID
entityMappings:
- entityType: DNS
  fieldMappings:
  - identifier: DomainName
    columnName: MA_Domain
- entityType: URL
  fieldMappings:
  - identifier: Url
    columnName: MA_DomainURL
- entityType: Account
  fieldMappings:
  - identifier: Name
    columnName: KeywordName
- entityType: Host
  fieldMappings:
  - identifier: HostName
    columnName: Domain
version: 1.0.0
kind: Scheduled

Stages and Predicates

Stage 1: source

Alerts_pastebin

Stage 2: where

| where Service == "pastebin"

Stage 3: extend

| extend MappedSeverity = Severity

Indicators

Each row is a field, operator, and value that the rule matches. The corpus column counts how many other rules in the catalog look for the same combination: high numbers point to widely-used, community-vetted indicators. Blank or 1 shows that the indicator is specific to this rule.

FieldKindValues
Serviceeq
  • pastebin transforms: cased

Output fields

Fields the rule emits when it matches. Chronicle authors list these in the outcome block; they appear on the detection and $risk_score drives alerting. Sentinel / Defender XDR rules build them up through project / summarize / extend stages. Sentinel maps these into alert fields via entityMappings and customDetails; Defender XDR custom detections surface them as alert fields directly.

FieldSource
MappedSeverityextend