Elevation of Privilege attempt detected

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Id	7a0f78b3-9a55-4ad0-a56d-b6616fdbff6a
Rulename	Elevation of Privilege attempt detected
Description	Identifies Elevation of Privilege attempt Azure Firewall IDPS logs.
Severity	High
Tactics	InitialAccess CredentialAccess
Techniques	T1078 T1110
Required data connectors	AzureFirewall
Kind	Scheduled
Query frequency	1h
Query period	24h
Trigger threshold	1
Trigger operator	GreaterThan
Source Uri	https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Azure Firewall/Analytic Rules/Azure Firewall - Elevation of Privilege attempt detected.yaml
Version	1.0.0
Arm template	7a0f78b3-9a55-4ad0-a56d-b6616fdbff6a.json

KQL

let TimeWindow   = 90d;    // How far back to look 
let HitThreshold = 10;     // Minimum hits to alert per SourceIp + Category
let MinSeverity  = 1;      // Set Minimum Severity
// Feature flags for optional filters
let EnableCategoryFilter    = true;   // Filter 1
let EnableDescriptionFilter = false;  // Filter 2
let EnableActionFilter      = false;  // Filter 3
// Filter 1: Categories of interest
let CategoriesOfInterest = dynamic([
    "Attempted User Privilege Gain",
    "Unsuccessful User Privilege Gain",
    "Successful User Privilege Gain",
    "Attempted Administrator Privilege Gain",
    "Successful Administrator Privilege Gain"
]);
// Filter 2: Descriptions of interest
let DescriptionsOfInterest = dynamic([
    "attempted-user",
    "unsuccessful-user",
    "successful-user",
    "attempted-admin",
    "successful-admin"
]);
// Filter 3: Action match
let MatchActions = dynamic(["Deny", "alert"]);
AZFWIdpsSignature
| where TimeGenerated >= ago(TimeWindow)
| where Severity >= MinSeverity
// Filter 1: Category filter (optional)
| where (EnableCategoryFilter == false) or (Category has_any (CategoriesOfInterest))
// Filter 2: Description filter (optional)
| where (EnableDescriptionFilter == false) or (Description has_any (DescriptionsOfInterest))
// Filter 3: Action filter (optional)
| where (EnableActionFilter == false) or (Action in~ (MatchActions))
| summarize
    StartTime   = min(TimeGenerated),
    EndTime     = max(TimeGenerated),
    TotalHits   = count(),
    MaxSeverity = max(Severity),
    Actions     = make_set(Action, 5),
    Signatures  = make_set(SignatureId, 20),
    Description = make_set(substring(tostring(Description), 0, 120), 3)
    by SourceIp, ThreatCategory = Category
| where TotalHits >= HitThreshold
| project
    StartTime,
    EndTime,
    SourceIp,
    ThreatCategory,
    TotalHits,
    MaxSeverity,
    Actions,
    Signatures,
    Description
| order by MaxSeverity desc, TotalHits desc

YAML

name: Elevation of Privilege attempt detected
relevantTechniques:
- T1078
- T1110
id: 7a0f78b3-9a55-4ad0-a56d-b6616fdbff6a
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Azure Firewall/Analytic Rules/Azure Firewall - Elevation of Privilege attempt detected.yaml
requiredDataConnectors:
- dataTypes:
  - AZFWIdpsSignature
  connectorId: AzureFirewall
version: 1.0.0
severity: High
triggerThreshold: 1
queryPeriod: 24h
entityMappings:
- fieldMappings:
  - identifier: Address
    columnName: SourceIp
  entityType: IP
queryFrequency: 1h
status: Available
query: |
  let TimeWindow   = 90d;    // How far back to look 
  let HitThreshold = 10;     // Minimum hits to alert per SourceIp + Category
  let MinSeverity  = 1;      // Set Minimum Severity
  // Feature flags for optional filters
  let EnableCategoryFilter    = true;   // Filter 1
  let EnableDescriptionFilter = false;  // Filter 2
  let EnableActionFilter      = false;  // Filter 3
  // Filter 1: Categories of interest
  let CategoriesOfInterest = dynamic([
      "Attempted User Privilege Gain",
      "Unsuccessful User Privilege Gain",
      "Successful User Privilege Gain",
      "Attempted Administrator Privilege Gain",
      "Successful Administrator Privilege Gain"
  ]);
  // Filter 2: Descriptions of interest
  let DescriptionsOfInterest = dynamic([
      "attempted-user",
      "unsuccessful-user",
      "successful-user",
      "attempted-admin",
      "successful-admin"
  ]);
  // Filter 3: Action match
  let MatchActions = dynamic(["Deny", "alert"]);
  AZFWIdpsSignature
  | where TimeGenerated >= ago(TimeWindow)
  | where Severity >= MinSeverity
  // Filter 1: Category filter (optional)
  | where (EnableCategoryFilter == false) or (Category has_any (CategoriesOfInterest))
  // Filter 2: Description filter (optional)
  | where (EnableDescriptionFilter == false) or (Description has_any (DescriptionsOfInterest))
  // Filter 3: Action filter (optional)
  | where (EnableActionFilter == false) or (Action in~ (MatchActions))
  | summarize
      StartTime   = min(TimeGenerated),
      EndTime     = max(TimeGenerated),
      TotalHits   = count(),
      MaxSeverity = max(Severity),
      Actions     = make_set(Action, 5),
      Signatures  = make_set(SignatureId, 20),
      Description = make_set(substring(tostring(Description), 0, 120), 3)
      by SourceIp, ThreatCategory = Category
  | where TotalHits >= HitThreshold
  | project
      StartTime,
      EndTime,
      SourceIp,
      ThreatCategory,
      TotalHits,
      MaxSeverity,
      Actions,
      Signatures,
      Description
  | order by MaxSeverity desc, TotalHits desc  
tactics:
- InitialAccess
- CredentialAccess
kind: Scheduled
description: |
    Identifies Elevation of Privilege attempt Azure Firewall IDPS logs.
triggerOperator: GreaterThan

ARM