Detection rules › Kusto

Digital Guardian - Incident with not blocked action

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

'Detects when incident has not block action.'

MITRE ATT&CK coverage

Rule body kusto

id: 07bca129-e7d6-4421-b489-32abade0b6a7
name: Digital Guardian - Incident with not blocked action
description: |
  'Detects when incident has not block action.'
severity: High
status: Available
requiredDataConnectors:
  - connectorId: SyslogAma
    datatypes:
      - Syslog
queryFrequency: 1h
queryPeriod: 1h
triggerOperator: gt
triggerThreshold: 0
tactics:
  - Exfiltration
relevantTechniques:
  - T1048
query: |
  DigitalGuardianDLPEvent
  | where isnotempty(IncidentStatus)
  | extend inc_act = split(IncidentStatus, ',')
  | where inc_act has 'New'
  | where inc_act !contains 'Block'
  | extend AccountCustomEntity = SrcUserName
entityMappings:
  - entityType: Account
    fieldMappings:
      - identifier: Name
        columnName: AccountCustomEntity
version: 1.0.2
kind: Scheduled

Stages and Predicates

Stage 1: source

DigitalGuardianDLPEvent

Stage 2: where

| where isnotempty(IncidentStatus)

Stage 3: extend

| extend inc_act = split(IncidentStatus, ',')

Stage 4: where

| where inc_act has 'New'

Stage 5: where

| where inc_act !contains 'Block'

Stage 6: extend

| extend AccountCustomEntity = SrcUserName

Exclusions

Top-level NOT(...) conjuncts: predicates this rule actively suppresses.

FieldKindExcluded values
inc_actcontainsBlock

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
IncidentStatusis_not_null
  • (no value, null check)
inc_actmatch
  • New 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
inc_actextend
AccountCustomEntityextend