Detection rules › Kusto

Sentinel One - Exclusion added

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

'Detects when new exclusion added.'

MITRE ATT&CK coverage

TacticTechniques
Stealth

Rule body

id: 4224409f-a7bf-45eb-a931-922d79575a05
name: Sentinel One - Exclusion added
description: |
  'Detects when new exclusion added.'
severity: Medium
status: Available
requiredDataConnectors:
  - connectorId: SentinelOne
    dataTypes:
      - SentinelOne
queryFrequency: 1h
queryPeriod: 1h
triggerOperator: gt
triggerThreshold: 0
tactics:
  - DefenseEvasion
relevantTechniques:
  - T1070
query: | 
  SentinelOne
  | where EventOriginalMessage has_all ('added', 'exclusion')
  | project EventCreationTime, SrcUserName, EventOriginalMessage
  | extend AccountCustomEntity = SrcUserName
entityMappings:
  - entityType: Account
    fieldMappings:
      - identifier: Name
        columnName: AccountCustomEntity
version: 1.0.0
kind: Scheduled

Stages and Predicates

Stage 1: source

SentinelOne

Stage 2: where

| where EventOriginalMessage has_all ('added', 'exclusion')

Stage 3: project

| project EventCreationTime, SrcUserName, EventOriginalMessage

Stage 4: extend

| extend AccountCustomEntity = SrcUserName

Indicators

These rows show field, operator, and value matches.

FieldKindValuesSearch
EventOriginalMessagematch
  • added transforms: term
  • exclusion transforms: term
field:"EventOriginalMessage" kind:match

Output fields

These fields are emitted when the rule matches.

FieldSource
EventCreationTimeproject
EventOriginalMessageproject
SrcUserNameproject
AccountCustomEntityextend