AFD WAF - Code Injection
Id | ded8168e-c806-4772-af30-10576e0a7529 |
Rulename | AFD WAF - Code Injection |
Description | Identifies a match for a Code Injection based attack in the AFD WAF logs. The threshold value in the query can be changed as per your infrastructure’s requirements. References: https://owasp.org/www-community/attacks/Code_Injection |
Severity | High |
Tactics | DefenseEvasion Execution InitialAccess PrivilegeEscalation |
Techniques | T1548 T1203 T1190 T1548 |
Required data connectors | WAF |
Kind | Scheduled |
Query frequency | 6h |
Query period | 6h |
Trigger threshold | 0 |
Trigger operator | gt |
Source Uri | https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Azure Web Application Firewall (WAF)/Analytic Rules/AFD-WAF-Code-Injection.yaml |
Version | 1.0.1 |
Arm template | ded8168e-c806-4772-af30-10576e0a7529.json |
let Threshold = 3;
AzureDiagnostics
| where Category =~ "FrontDoorWebApplicationFirewallLog"
| where action_s =~ "AnomalyScoring"
| where details_msg_s has "Injection" or details_msg_s has "File Inclusion"
| parse details_data_s with MessageText "Matched Data:" MatchedData "AND " * "table_name FROM " TableName " " *
| project trackingReference_s, host_s, requestUri_s, TimeGenerated, clientIP_s, details_matches_s, details_msg_s, details_data_s, TableName, MatchedData
| join kind = inner(
AzureDiagnostics
| where Category =~ "FrontDoorWebApplicationFirewallLog"
| where action_s =~ "Block") on trackingReference_s
| summarize URI_s = make_set(requestUri_s,100), Table = make_set(TableName,100), StartTime = min(TimeGenerated), EndTime = max(TimeGenerated), TrackingReference = make_set(trackingReference_s,100), Matched_Data = make_set(MatchedData,100), Detail_Data = make_set(details_data_s,100), Detail_Message = make_set(details_msg_s,100), Total_TrackingReference = dcount(trackingReference_s) by clientIP_s, host_s, action_s
| where Total_TrackingReference >= Threshold
queryPeriod: 6h
version: 1.0.1
tactics:
- DefenseEvasion
- Execution
- InitialAccess
- PrivilegeEscalation
queryFrequency: 6h
id: ded8168e-c806-4772-af30-10576e0a7529
triggerOperator: gt
requiredDataConnectors:
- dataTypes:
- AzureDiagnostics
connectorId: WAF
severity: High
entityMappings:
- entityType: URL
fieldMappings:
- columnName: URI_s
identifier: Url
- entityType: IP
fieldMappings:
- columnName: clientIP_s
identifier: Address
triggerThreshold: 0
relevantTechniques:
- T1548
- T1203
- T1190
- T1548
query: |
let Threshold = 3;
AzureDiagnostics
| where Category =~ "FrontDoorWebApplicationFirewallLog"
| where action_s =~ "AnomalyScoring"
| where details_msg_s has "Injection" or details_msg_s has "File Inclusion"
| parse details_data_s with MessageText "Matched Data:" MatchedData "AND " * "table_name FROM " TableName " " *
| project trackingReference_s, host_s, requestUri_s, TimeGenerated, clientIP_s, details_matches_s, details_msg_s, details_data_s, TableName, MatchedData
| join kind = inner(
AzureDiagnostics
| where Category =~ "FrontDoorWebApplicationFirewallLog"
| where action_s =~ "Block") on trackingReference_s
| summarize URI_s = make_set(requestUri_s,100), Table = make_set(TableName,100), StartTime = min(TimeGenerated), EndTime = max(TimeGenerated), TrackingReference = make_set(trackingReference_s,100), Matched_Data = make_set(MatchedData,100), Detail_Data = make_set(details_data_s,100), Detail_Message = make_set(details_msg_s,100), Total_TrackingReference = dcount(trackingReference_s) by clientIP_s, host_s, action_s
| where Total_TrackingReference >= Threshold
kind: Scheduled
name: AFD WAF - Code Injection
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Azure Web Application Firewall (WAF)/Analytic Rules/AFD-WAF-Code-Injection.yaml
description: |
'Identifies a match for a Code Injection based attack in the AFD WAF logs. The threshold value in the query can be changed as per your infrastructure's requirements.
References: https://owasp.org/www-community/attacks/Code_Injection'
status: Available
tags:
- Code Injection
{
"$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/ded8168e-c806-4772-af30-10576e0a7529')]",
"kind": "Scheduled",
"name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/ded8168e-c806-4772-af30-10576e0a7529')]",
"properties": {
"alertRuleTemplateName": "ded8168e-c806-4772-af30-10576e0a7529",
"customDetails": null,
"description": "'Identifies a match for a Code Injection based attack in the AFD WAF logs. The threshold value in the query can be changed as per your infrastructure's requirements.\nReferences: https://owasp.org/www-community/attacks/Code_Injection'\n",
"displayName": "AFD WAF - Code Injection",
"enabled": true,
"entityMappings": [
{
"entityType": "URL",
"fieldMappings": [
{
"columnName": "URI_s",
"identifier": "Url"
}
]
},
{
"entityType": "IP",
"fieldMappings": [
{
"columnName": "clientIP_s",
"identifier": "Address"
}
]
}
],
"OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Azure Web Application Firewall (WAF)/Analytic Rules/AFD-WAF-Code-Injection.yaml",
"query": "let Threshold = 3;\nAzureDiagnostics\n| where Category =~ \"FrontDoorWebApplicationFirewallLog\"\n| where action_s =~ \"AnomalyScoring\"\n| where details_msg_s has \"Injection\" or details_msg_s has \"File Inclusion\"\n| parse details_data_s with MessageText \"Matched Data:\" MatchedData \"AND \" * \"table_name FROM \" TableName \" \" *\n| project trackingReference_s, host_s, requestUri_s, TimeGenerated, clientIP_s, details_matches_s, details_msg_s, details_data_s, TableName, MatchedData\n| join kind = inner(\nAzureDiagnostics\n| where Category =~ \"FrontDoorWebApplicationFirewallLog\"\n| where action_s =~ \"Block\") on trackingReference_s\n| summarize URI_s = make_set(requestUri_s,100), Table = make_set(TableName,100), StartTime = min(TimeGenerated), EndTime = max(TimeGenerated), TrackingReference = make_set(trackingReference_s,100), Matched_Data = make_set(MatchedData,100), Detail_Data = make_set(details_data_s,100), Detail_Message = make_set(details_msg_s,100), Total_TrackingReference = dcount(trackingReference_s) by clientIP_s, host_s, action_s\n| where Total_TrackingReference >= Threshold\n",
"queryFrequency": "PT6H",
"queryPeriod": "PT6H",
"severity": "High",
"status": "Available",
"subTechniques": [],
"suppressionDuration": "PT1H",
"suppressionEnabled": false,
"tactics": [
"DefenseEvasion",
"Execution",
"InitialAccess",
"PrivilegeEscalation"
],
"tags": [
"Code Injection"
],
"techniques": [
"T1190",
"T1203",
"T1548"
],
"templateVersion": "1.0.1",
"triggerOperator": "GreaterThan",
"triggerThreshold": 0
},
"type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
}
]
}