Process-Level Anomaly

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Id	3fa85f64-5717-4562-b3fc-2c963f66afa6
Rulename	Process-Level Anomaly
Description	Triggers an incident when the same process name appears in 50 or more alerts across multiple devices, suggesting widespread activity.
Severity	Medium
Tactics	Execution DefenseEvasion
Techniques	T1059 T1204
Required data connectors	MorphisecCCF
Kind	Scheduled
Query frequency	1d
Query period	1d
Trigger threshold	0
Trigger operator	gt
Source Uri	https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Morphisec/Analytic Rules/MorphisecProcessLevelAnomaly.yaml
Version	1.0.0
Arm template	3fa85f64-5717-4562-b3fc-2c963f66afa6.json

KQL

MorphisecAlerts_CL
| where threatMessageArrivalTime >= ago(24h)
| summarize 
    AlertCount = dcount(id),
    DeviceCount = dcount(hostname)
    by application
| where AlertCount >= 50 and DeviceCount > 1

YAML

triggerOperator: gt
incidentConfiguration:
  groupingConfiguration:
    matchingMethod: AllEntities
    enabled: false
    reopenClosedIncident: false
    lookbackDuration: 5h
  createIncident: true
requiredDataConnectors:
- connectorId: MorphisecCCF
  dataTypes:
  - Morphisec
relevantTechniques:
- T1059
- T1204
query: |
  MorphisecAlerts_CL
  | where threatMessageArrivalTime >= ago(24h)
  | summarize 
      AlertCount = dcount(id),
      DeviceCount = dcount(hostname)
      by application
  | where AlertCount >= 50 and DeviceCount > 1  
triggerThreshold: 0
customDetails:
  ProcessName: application
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Morphisec/Analytic Rules/MorphisecProcessLevelAnomaly.yaml
suppressionEnabled: false
queryPeriod: 1d
tactics:
- Execution
- DefenseEvasion
name: Process-Level Anomaly
status: Available
kind: Scheduled
description: |
    'Triggers an incident when the same process name appears in 50 or more alerts across multiple devices, suggesting widespread activity.'
id: 3fa85f64-5717-4562-b3fc-2c963f66afa6
version: 1.0.0
eventGroupingSettings:
  aggregationKind: SingleAlert
queryFrequency: 1d
severity: Medium
suppressionDuration: 5h

ARM