Sentinel One - Multiple alerts on host

Back


Id	47e427e6-61bc-4e24-8d16-a12871b9f939
Rulename	Sentinel One - Multiple alerts on host
Description	Detects when multiple alerts received from same host.
Severity	High
Tactics	InitialAccess
Techniques	T1190
Required data connectors	SentinelOne
Kind	Scheduled
Query frequency	1h
Query period	1h
Trigger threshold	0
Trigger operator	gt
Source Uri	https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/SentinelOne/Analytic Rules/SentinelOneMultipleAlertsOnHost.yaml
Version	1.0.2
Arm template	47e427e6-61bc-4e24-8d16-a12871b9f939.json

KQL

SentinelOne
| where ActivityType == 3608
| extend RuleName = extract(@'Custom Rule:\s(.*?)\sin Group', 1, EventOriginalMessage)
| extend DstHostname = extract(@'detected on\s(\S+)\.', 1, EventOriginalMessage)
| summarize count() by DstHostname, bin(TimeGenerated, 15m)
| where count_ > 1
| extend HostCustomEntity = DstHostname

YAML

severity: High
triggerOperator: gt
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/SentinelOne/Analytic Rules/SentinelOneMultipleAlertsOnHost.yaml
id: 47e427e6-61bc-4e24-8d16-a12871b9f939
entityMappings:
- fieldMappings:
  - identifier: HostName
    columnName: HostCustomEntity
  entityType: Host
kind: Scheduled
status: Available
tactics:
- InitialAccess
queryFrequency: 1h
requiredDataConnectors:
- connectorId: SentinelOne
  dataTypes:
  - SentinelOne
relevantTechniques:
- T1190
version: 1.0.2
description: |
    'Detects when multiple alerts received from same host.'
triggerThreshold: 0
query: |
  SentinelOne
  | where ActivityType == 3608
  | extend RuleName = extract(@'Custom Rule:\s(.*?)\sin Group', 1, EventOriginalMessage)
  | extend DstHostname = extract(@'detected on\s(\S+)\.', 1, EventOriginalMessage)
  | summarize count() by DstHostname, bin(TimeGenerated, 15m)
  | where count_ > 1
  | extend HostCustomEntity = DstHostname  
queryPeriod: 1h
name: Sentinel One - Multiple alerts on host

ARM