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

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

ARM