Process-Level Anomaly

Back


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

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

ARM