NIST SP 800-53 Posture Changed

Back


Id	dd834c97-4638-4bb3-a4e3-807e8b0580dc
Rulename	NIST SP 800-53 Posture Changed
Description	This alert is desinged to monitor Azure policies aligned with the NIST SP 800-53 Regulatory Compliance initative. The alert triggers when policy compliance falls below 70% within a 1 week timeframe.
Severity	Medium
Tactics	Discovery
Techniques	T1082
Kind	Scheduled
Query frequency	7d
Query period	7d
Trigger threshold	0
Trigger operator	gt
Source Uri	https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/NISTSP80053/Analytic Rules/NISTSP80053PostureChanged.yaml
Version	1.0.0
Arm template	dd834c97-4638-4bb3-a4e3-807e8b0580dc.json

KQL

let Last_Evaluated=SecurityRecommendation | join kind=fullouter(SecurityRegulatoryCompliance| where ComplianceStandard == "NIST-SP-800-53-R4") on RecommendationName | summarize arg_max(TimeGenerated, *) by AssessedResourceId, RecommendationName | extend ComplianceDomain=iff(ComplianceControl contains "AC.", "Access Control", iff(ComplianceControl contains "AT.", "Security Awareness & Training", iff(ComplianceControl contains "AU.", "Audit & Accountability", iff(ComplianceControl contains "CA.", "Security Assessment", iff(ComplianceControl contains "CM.", "Configuration Management", iff(ComplianceControl contains "CP.", "Contingency Planning", iff(ComplianceControl contains "IA.", "Identification & Authentication", iff(ComplianceControl contains "IR.", "Incident Response", iff(ComplianceControl contains "MA.", "System Maintenance", iff(ComplianceControl contains "MP.", "Media Protection", iff(ComplianceControl contains "PE.", "Physical Protection", iff(ComplianceControl contains "PL.", "Security Planning", iff(ComplianceControl contains "PS.", "Personnel Security",iff(ComplianceControl contains "RA.", "Risk Assessment",iff(ComplianceControl contains "SA.", "System & Services Acquisition",iff(ComplianceControl contains "SC.", "System & Communications Protection",iff(ComplianceControl contains "SI.", "System & Information Integrity","Other"))))))))))))))))) | summarize Failed = countif(RecommendationState == "Unhealthy"), Passed = countif(RecommendationState == "Healthy"), Total = countif(RecommendationState == "Healthy" or RecommendationState == "Unhealthy") by ComplianceDomain, TimeGenerated; SecurityRecommendation | join kind=fullouter(SecurityRegulatoryCompliance| where ComplianceStandard == "NIST-SP-800-53-R4") on RecommendationName | summarize arg_max(TimeGenerated, *) by AssessedResourceId, RecommendationName | extend ComplianceDomain=iff(ComplianceControl contains "AC.", "Access Control", iff(ComplianceControl contains "AT.", "Security Awareness & Training", iff(ComplianceControl contains "AU.", "Audit & Accountability", iff(ComplianceControl contains "CA.", "Security Assessment", iff(ComplianceControl contains "CM.", "Configuration Management", iff(ComplianceControl contains "CP.", "Contingency Planning", iff(ComplianceControl contains "IA.", "Identification & Authentication", iff(ComplianceControl contains "IR.", "Incident Response", iff(ComplianceControl contains "MA.", "System Maintenance", iff(ComplianceControl contains "MP.", "Media Protection", iff(ComplianceControl contains "PE.", "Physical Protection", iff(ComplianceControl contains "PL.", "Security Planning", iff(ComplianceControl contains "PS.", "Personnel Security",iff(ComplianceControl contains "RA.", "Risk Assessment",iff(ComplianceControl contains "SA.", "System & Services Acquisition",iff(ComplianceControl contains "SC.", "System & Communications Protection",iff(ComplianceControl contains "SI.", "System & Information Integrity","Other"))))))))))))))))) | summarize Failed = countif(RecommendationState == "Unhealthy"), Passed = countif(RecommendationState == "Healthy"), Total = countif(RecommendationState == "Healthy" or RecommendationState == "Unhealthy") by ComplianceDomain | extend PassedControlsPercentage = (Passed/todouble(Total))*100 | join (Last_Evaluated) on ComplianceDomain | project ComplianceDomain, Total, PassedControlsPercentage, Passed, Failed, LastEvaluated=TimeGenerated | summarize arg_max(LastEvaluated, *) by ComplianceDomain, Total, PassedControlsPercentage, Passed, Failed | where PassedControlsPercentage < 70 | sort by PassedControlsPercentage, Passed desc | extend RemediationLink = strcat('https://portal.azure.com/#blade/Microsoft_Azure_Security/SecurityMenuBlade/22') | extend URLCustomEntity = RemediationLink

YAML

status: Available
id: dd834c97-4638-4bb3-a4e3-807e8b0580dc
query: let Last_Evaluated=SecurityRecommendation | join kind=fullouter(SecurityRegulatoryCompliance| where ComplianceStandard == "NIST-SP-800-53-R4") on RecommendationName | summarize arg_max(TimeGenerated, *) by AssessedResourceId, RecommendationName | extend ComplianceDomain=iff(ComplianceControl contains "AC.", "Access Control", iff(ComplianceControl contains "AT.", "Security Awareness & Training", iff(ComplianceControl contains "AU.", "Audit & Accountability", iff(ComplianceControl contains "CA.", "Security Assessment", iff(ComplianceControl contains "CM.", "Configuration Management", iff(ComplianceControl contains "CP.", "Contingency Planning", iff(ComplianceControl contains "IA.", "Identification & Authentication", iff(ComplianceControl contains "IR.", "Incident Response", iff(ComplianceControl contains "MA.", "System Maintenance", iff(ComplianceControl contains "MP.", "Media Protection", iff(ComplianceControl contains "PE.", "Physical Protection", iff(ComplianceControl contains "PL.", "Security Planning", iff(ComplianceControl contains "PS.", "Personnel Security",iff(ComplianceControl contains "RA.", "Risk Assessment",iff(ComplianceControl contains "SA.", "System & Services Acquisition",iff(ComplianceControl contains "SC.", "System & Communications Protection",iff(ComplianceControl contains "SI.", "System & Information Integrity","Other"))))))))))))))))) | summarize Failed = countif(RecommendationState == "Unhealthy"), Passed = countif(RecommendationState == "Healthy"), Total = countif(RecommendationState == "Healthy" or RecommendationState == "Unhealthy") by ComplianceDomain, TimeGenerated; SecurityRecommendation | join kind=fullouter(SecurityRegulatoryCompliance| where ComplianceStandard == "NIST-SP-800-53-R4") on RecommendationName | summarize arg_max(TimeGenerated, *) by AssessedResourceId, RecommendationName | extend ComplianceDomain=iff(ComplianceControl contains "AC.", "Access Control", iff(ComplianceControl contains "AT.", "Security Awareness & Training", iff(ComplianceControl contains "AU.", "Audit & Accountability", iff(ComplianceControl contains "CA.", "Security Assessment", iff(ComplianceControl contains "CM.", "Configuration Management", iff(ComplianceControl contains "CP.", "Contingency Planning", iff(ComplianceControl contains "IA.", "Identification & Authentication", iff(ComplianceControl contains "IR.", "Incident Response", iff(ComplianceControl contains "MA.", "System Maintenance", iff(ComplianceControl contains "MP.", "Media Protection", iff(ComplianceControl contains "PE.", "Physical Protection", iff(ComplianceControl contains "PL.", "Security Planning", iff(ComplianceControl contains "PS.", "Personnel Security",iff(ComplianceControl contains "RA.", "Risk Assessment",iff(ComplianceControl contains "SA.", "System & Services Acquisition",iff(ComplianceControl contains "SC.", "System & Communications Protection",iff(ComplianceControl contains "SI.", "System & Information Integrity","Other"))))))))))))))))) | summarize Failed = countif(RecommendationState == "Unhealthy"), Passed = countif(RecommendationState == "Healthy"), Total = countif(RecommendationState == "Healthy" or RecommendationState == "Unhealthy") by ComplianceDomain | extend PassedControlsPercentage = (Passed/todouble(Total))*100 | join (Last_Evaluated) on ComplianceDomain | project ComplianceDomain, Total, PassedControlsPercentage, Passed, Failed, LastEvaluated=TimeGenerated | summarize arg_max(LastEvaluated, *) by ComplianceDomain, Total, PassedControlsPercentage, Passed, Failed | where PassedControlsPercentage < 70 | sort by PassedControlsPercentage, Passed desc | extend RemediationLink = strcat('https://portal.azure.com/#blade/Microsoft_Azure_Security/SecurityMenuBlade/22') | extend URLCustomEntity = RemediationLink
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/NISTSP80053/Analytic Rules/NISTSP80053PostureChanged.yaml
description: |
    'This alert is desinged to monitor Azure policies aligned with the NIST SP 800-53 Regulatory Compliance initative. The alert triggers when policy compliance falls below 70% within a 1 week timeframe.'
name: NIST SP 800-53 Posture Changed
relevantTechniques:
- T1082
entityMappings:
- entityType: URL
  fieldMappings:
  - identifier: Url
    columnName: URLCustomEntity
triggerThreshold: 0
severity: Medium
requiredDataConnectors: []
queryFrequency: 7d
queryPeriod: 7d
version: 1.0.0
kind: Scheduled
tactics:
- Discovery
triggerOperator: gt

ARM

{
  "$schema": "https://schema.management.azure.com/schemas/2019-04-01/deploymentTemplate.json#",
  "contentVersion": "1.0.0.0",
  "parameters": {
    "workspace": {
      "type": "String"
    }
  },
  "resources": [
    {
      "apiVersion": "2024-01-01-preview",
      "id": "[concat(resourceId('Microsoft.OperationalInsights/workspaces/providers', parameters('workspace'), 'Microsoft.SecurityInsights'),'/alertRules/dd834c97-4638-4bb3-a4e3-807e8b0580dc')]",
      "kind": "Scheduled",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/dd834c97-4638-4bb3-a4e3-807e8b0580dc')]",
      "properties": {
        "alertRuleTemplateName": "dd834c97-4638-4bb3-a4e3-807e8b0580dc",
        "customDetails": null,
        "description": "'This alert is desinged to monitor Azure policies aligned with the NIST SP 800-53 Regulatory Compliance initative. The alert triggers when policy compliance falls below 70% within a 1 week timeframe.'\n",
        "displayName": "NIST SP 800-53 Posture Changed",
        "enabled": true,
        "entityMappings": [
          {
            "entityType": "URL",
            "fieldMappings": [
              {
                "columnName": "URLCustomEntity",
                "identifier": "Url"
              }
            ]
          }
        ],
        "OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/NISTSP80053/Analytic Rules/NISTSP80053PostureChanged.yaml",
        "query": "let Last_Evaluated=SecurityRecommendation | join kind=fullouter(SecurityRegulatoryCompliance| where ComplianceStandard == \"NIST-SP-800-53-R4\") on RecommendationName | summarize arg_max(TimeGenerated, *) by AssessedResourceId, RecommendationName | extend ComplianceDomain=iff(ComplianceControl contains \"AC.\", \"Access Control\", iff(ComplianceControl contains \"AT.\", \"Security Awareness & Training\", iff(ComplianceControl contains \"AU.\", \"Audit & Accountability\", iff(ComplianceControl contains \"CA.\", \"Security Assessment\", iff(ComplianceControl contains \"CM.\", \"Configuration Management\", iff(ComplianceControl contains \"CP.\", \"Contingency Planning\", iff(ComplianceControl contains \"IA.\", \"Identification & Authentication\", iff(ComplianceControl contains \"IR.\", \"Incident Response\", iff(ComplianceControl contains \"MA.\", \"System Maintenance\", iff(ComplianceControl contains \"MP.\", \"Media Protection\", iff(ComplianceControl contains \"PE.\", \"Physical Protection\", iff(ComplianceControl contains \"PL.\", \"Security Planning\", iff(ComplianceControl contains \"PS.\", \"Personnel Security\",iff(ComplianceControl contains \"RA.\", \"Risk Assessment\",iff(ComplianceControl contains \"SA.\", \"System & Services Acquisition\",iff(ComplianceControl contains \"SC.\", \"System & Communications Protection\",iff(ComplianceControl contains \"SI.\", \"System & Information Integrity\",\"Other\"))))))))))))))))) | summarize Failed = countif(RecommendationState == \"Unhealthy\"), Passed = countif(RecommendationState == \"Healthy\"), Total = countif(RecommendationState == \"Healthy\" or RecommendationState == \"Unhealthy\") by ComplianceDomain, TimeGenerated; SecurityRecommendation | join kind=fullouter(SecurityRegulatoryCompliance| where ComplianceStandard == \"NIST-SP-800-53-R4\") on RecommendationName | summarize arg_max(TimeGenerated, *) by AssessedResourceId, RecommendationName | extend ComplianceDomain=iff(ComplianceControl contains \"AC.\", \"Access Control\", iff(ComplianceControl contains \"AT.\", \"Security Awareness & Training\", iff(ComplianceControl contains \"AU.\", \"Audit & Accountability\", iff(ComplianceControl contains \"CA.\", \"Security Assessment\", iff(ComplianceControl contains \"CM.\", \"Configuration Management\", iff(ComplianceControl contains \"CP.\", \"Contingency Planning\", iff(ComplianceControl contains \"IA.\", \"Identification & Authentication\", iff(ComplianceControl contains \"IR.\", \"Incident Response\", iff(ComplianceControl contains \"MA.\", \"System Maintenance\", iff(ComplianceControl contains \"MP.\", \"Media Protection\", iff(ComplianceControl contains \"PE.\", \"Physical Protection\", iff(ComplianceControl contains \"PL.\", \"Security Planning\", iff(ComplianceControl contains \"PS.\", \"Personnel Security\",iff(ComplianceControl contains \"RA.\", \"Risk Assessment\",iff(ComplianceControl contains \"SA.\", \"System & Services Acquisition\",iff(ComplianceControl contains \"SC.\", \"System & Communications Protection\",iff(ComplianceControl contains \"SI.\", \"System & Information Integrity\",\"Other\"))))))))))))))))) | summarize Failed = countif(RecommendationState == \"Unhealthy\"), Passed = countif(RecommendationState == \"Healthy\"), Total = countif(RecommendationState == \"Healthy\" or RecommendationState == \"Unhealthy\") by ComplianceDomain | extend PassedControlsPercentage = (Passed/todouble(Total))*100 | join (Last_Evaluated) on ComplianceDomain | project ComplianceDomain, Total, PassedControlsPercentage, Passed, Failed, LastEvaluated=TimeGenerated | summarize arg_max(LastEvaluated, *) by ComplianceDomain, Total, PassedControlsPercentage, Passed, Failed | where PassedControlsPercentage < 70 | sort by PassedControlsPercentage, Passed desc | extend RemediationLink = strcat('https://portal.azure.com/#blade/Microsoft_Azure_Security/SecurityMenuBlade/22') | extend URLCustomEntity = RemediationLink",
        "queryFrequency": "P7D",
        "queryPeriod": "P7D",
        "severity": "Medium",
        "status": "Available",
        "subTechniques": [],
        "suppressionDuration": "PT1H",
        "suppressionEnabled": false,
        "tactics": [
          "Discovery"
        ],
        "techniques": [
          "T1082"
        ],
        "templateVersion": "1.0.0",
        "triggerOperator": "GreaterThan",
        "triggerThreshold": 0
      },
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
    }
  ]
}