Elevation of Privilege attempt detected

id: 7a0f78b3-9a55-4ad0-a56d-b6616fdbff6a
name: Elevation of Privilege attempt detected
description: |
  Identifies Elevation of Privilege attempt Azure Firewall IDPS logs.
severity: High
status: Available
requiredDataConnectors:
  - connectorId: AzureFirewall
    dataTypes:
      - AZFWIdpsSignature
queryFrequency: 1h
queryPeriod: 24h
triggerOperator: gt
triggerThreshold: 0
tactics:
  - InitialAccess
  - CredentialAccess
relevantTechniques:
  - T1078
  - T1110
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
entityMappings:
  - entityType: IP
    fieldMappings:
      - identifier: Address
        columnName: SourceIp
version: 1.0.1
kind: Scheduled