Detection rules › Kusto

Azure secure score PW age policy new

Status
available
Severity
medium
Time window
6h
Source
github.com/Azure/Azure-Sentinel

'This query searches for having found that when periodic password resets are enforced, passwords become less secure. Users tend to pick a weaker password and vary it slightly for each reset. If a user creates a strong password (long, complex and without any pragmatic words present) it should remain just as strong in the future as it is today. It is Microsoft's official security position to not expire passwords periodically without a specific reason, and recommends that cloud-only tenants set the password policy to never expire.'

MITRE ATT&CK coverage

Rule body kusto

id: 88C9A5E0-31EC-490B-82E5-A286D9B99A67
name: Azure secure score PW age policy new
description: |
  'This query searches for having found that when periodic password resets are enforced, passwords become less secure. Users tend to pick a weaker password and vary it slightly for each reset. 
   If a user creates a strong password (long, complex and without any pragmatic words present) it should remain just as strong in the future as it is today. It is Microsoft's official security position to not expire passwords periodically without a specific reason, and recommends that cloud-only tenants set the password policy to never expire.'
severity: Medium
status: Available
requiredDataConnectors:
  - connectorId: SenservaPro
    dataTypes:
      - SenservaPro_CL
queryFrequency: 6h
queryPeriod: 6h
triggerOperator: gt
triggerThreshold: 0
tactics:
  - CredentialAccess
relevantTechniques:
  - T1555
  - T1606
  - T1040
query: |
  SenservaPro_CL
  | where ControlName_s == 'AzureSecureScorePWAgePolicyNew'
entityMappings:
  - entityType: Account
    fieldMappings:
      - identifier: Name
        columnName: ControlName_s
      - identifier: AadTenantId
        columnName: TenantId
      - identifier: DisplayName
        columnName: TenantDisplayName_s 
  - entityType: SecurityGroup
    fieldMappings:
      - identifier: DistinguishedName
        columnName: Group_s
  - entityType: AzureResource
    fieldMappings:
      - identifier: ResourceId
        columnName: SourceSystem 
version: 1.0.1
kind: Scheduled

Stages and Predicates

Stage 1: source

SenservaPro_CL

Stage 2: where

| where ControlName_s == 'AzureSecureScorePWAgePolicyNew'

Indicators

Each row is a field, operator, and value that the rule matches. The corpus column counts how many other rules in the catalog look for the same combination: high numbers point to widely-used, community-vetted indicators. Blank or 1 shows that the indicator is specific to this rule.

FieldKindValues
ControlName_seq
  • AzureSecureScorePWAgePolicyNew transforms: cased