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Detection rules › Kusto

Claroty - Threat detected

Status
available
Severity
high
Time window
1h
Source
github.com/Azure/Azure-Sentinel

Detects Claroty events where EventOriginalType or EventType contains 'Threat', identifying Threat-related activity and surfacing the destination IP address for investigation.

MITRE ATT&CK coverage

TacticTechniques
ReconnaissanceT1595 Active Scanning
DiscoveryT1018 Remote System Discovery

Rule body kusto

id: 731e5ac4-7fe1-4b06-9941-532f2e008bb3
name: Claroty - Threat detected
description: Detects Claroty events where EventOriginalType or EventType contains 'Threat', identifying Threat-related activity
  and surfacing the destination IP address for investigation.
severity: High
status: Available
requiredDataConnectors:
  - connectorId: Claroty
    dataTypes:
      - ClarotyEvent
  - connectorId: ClarotyAma
    dataTypes:
      - ClarotyEvent
  - connectorId: CefAma
    dataTypes:
      - CommonSecurityLog
queryFrequency: 1h
queryPeriod: 1h
triggerOperator: gt
triggerThreshold: 0
tactics:
  - Discovery
  - Reconnaissance
relevantTechniques:
  - T1018
  - T1595
query: |
  ClarotyEvent
  | where EventOriginalType has 'Threat' or EventType has 'Threat'
  | extend IPCustomEntity = DstIpAddr
entityMappings:
  - entityType: IP
    fieldMappings:
      - identifier: Address
        columnName: IPCustomEntity
alertDetailsOverride:
  alertDisplayNameFormat: Claroty Threat detected on {{IPCustomEntity}}
  alertDescriptionFormat: Claroty event type {{EventType}} or original type {{EventOriginalType}} matched Threat on {{IPCustomEntity}}
customDetails:
  EventOriginalType: EventOriginalType
  EventType: EventType
  TimeGenerated: TimeGenerated
version: 1.0.5
kind: Scheduled

Stages and Predicates

Stage 1: source

ClarotyEvent

Stage 2: where

| where EventOriginalType has 'Threat' or EventType has 'Threat'

Stage 3: extend

| extend IPCustomEntity = DstIpAddr

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
EventOriginalTypematch
  • Threat transforms: term
EventTypematch
  • Threat transforms: term

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
IPCustomEntityextend