BTP - Cloud Integration access policy tampering

let accessPolicyTypes = dynamic(["Access Policy", "Artifact Reference"]);
let monitoredActions = dynamic(["Create", "Change", "Delete"]);
SAPBTPAuditLog_CL
| where Category == "audit.security-events"
| extend data_s = tostring(Message.data),
         ipAddress = tostring(Message.ip)
| extend parsedData = parse_json(data_s)
| extend action = tostring(parsedData.action),
         objectType = tostring(parsedData.objectType),
         objectId = tostring(parsedData.objectId),
         policyMessage = tostring(parsedData.attributes.message)
| where objectType in (accessPolicyTypes)
| where action in (monitoredActions)
| extend normalizedAction = case(
    action == "Create", "created",
    action == "Change", "modified",
    action == "Delete", "deleted",
    action
)
| extend MessageText = case(
    objectType == "Access Policy", strcat("Access policy '", objectId, "' was ", normalizedAction),
    objectType == "Artifact Reference", strcat("Artifact reference '", objectId, "' was ", normalizedAction),
    strcat(objectType, " '", objectId, "' was ", normalizedAction)
)
| project
    UpdatedOn,
    UserName,
    MessageText,
    ObjectType = objectType,
    ObjectId = objectId,
    Action = action,
    PolicyMessage = policyMessage,
    Tenant,
    ipAddress,
    CloudApp = "SAP Cloud Integration"
| extend AccountName = split(UserName, "@")[0], UPNSuffix = split(UserName, "@")[1]

id: 9e6f4b2c-0d3e-5a8f-c9b7-2f5d8a1e4c6b
triggerOperator: gt
entityMappings:
- fieldMappings:
  - identifier: Name
    columnName: AccountName
  - identifier: UPNSuffix
    columnName: UPNSuffix
  entityType: Account
- fieldMappings:
  - identifier: Address
    columnName: ipAddress
  entityType: IP
- fieldMappings:
  - identifier: Name
    columnName: CloudApp
  entityType: CloudApplication
eventGroupingSettings:
  aggregationKind: SingleAlert
requiredDataConnectors:
- dataTypes:
  - SAPBTPAuditLog_CL
  connectorId: SAPBTPAuditEvents
queryFrequency: 15m
alertDetailsOverride:
  alertDisplayNameFormat: 'SAP Cloud Integration: {{MessageText}}'
  alertDescriptionFormat: |
    {{MessageText}} by {{UserName}} from IP {{ipAddress}}.

    This could indicate:
    - Legitimate access policy administration
    - Unauthorized privilege escalation attempt
    - Attacker modifying security controls to access sensitive integrations    
queryPeriod: 15m
status: Available
query: |
  let accessPolicyTypes = dynamic(["Access Policy", "Artifact Reference"]);
  let monitoredActions = dynamic(["Create", "Change", "Delete"]);
  SAPBTPAuditLog_CL
  | where Category == "audit.security-events"
  | extend data_s = tostring(Message.data),
           ipAddress = tostring(Message.ip)
  | extend parsedData = parse_json(data_s)
  | extend action = tostring(parsedData.action),
           objectType = tostring(parsedData.objectType),
           objectId = tostring(parsedData.objectId),
           policyMessage = tostring(parsedData.attributes.message)
  | where objectType in (accessPolicyTypes)
  | where action in (monitoredActions)
  | extend normalizedAction = case(
      action == "Create", "created",
      action == "Change", "modified",
      action == "Delete", "deleted",
      action
  )
  | extend MessageText = case(
      objectType == "Access Policy", strcat("Access policy '", objectId, "' was ", normalizedAction),
      objectType == "Artifact Reference", strcat("Artifact reference '", objectId, "' was ", normalizedAction),
      strcat(objectType, " '", objectId, "' was ", normalizedAction)
  )
  | project
      UpdatedOn,
      UserName,
      MessageText,
      ObjectType = objectType,
      ObjectId = objectId,
      Action = action,
      PolicyMessage = policyMessage,
      Tenant,
      ipAddress,
      CloudApp = "SAP Cloud Integration"
  | extend AccountName = split(UserName, "@")[0], UPNSuffix = split(UserName, "@")[1]  
name: BTP - Cloud Integration access policy tampering
kind: Scheduled
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/SAP BTP/Analytic Rules/BTP - Cloud Integration access policy tampering.yaml
tactics:
- DefenseEvasion
- PrivilegeEscalation
severity: High
relevantTechniques:
- T1548
- T1222
triggerThreshold: 0
version: 1.0.0
description: |
  Identifies changes to access policies in SAP Cloud Integration. Access policies control
  authorization for integration artifacts, defining which users and roles can access specific
  integration flows and related content.

  Unauthorized access policy manipulation could indicate:
  - Attacker granting themselves access to sensitive integration artifacts
  - Removal of security controls to enable further malicious activity
  - Defense evasion by modifying artifact references to hide unauthorized access  
customDetails:
  ObjectId: ObjectId
  ObjectType: ObjectType
  SourceIP: ipAddress
  PolicyMessage: PolicyMessage
  Action: Action