Collect BeyondTrust Endpoint Privilege Management (EPM) logs

Supported in:

This document explains how to ingest BeyondTrust Endpoint Privilege Management (EPM) logs to Google Security Operations using Google Cloud Storage. The parser focuses on transforming raw JSON log data from BeyondTrust Endpoint into a structured format conforming to the Chronicle UDM. It first initializes default values for various fields and then parses the JSON payload, subsequently mapping specific fields from the raw log into corresponding UDM fields within the event.idm.read_only_udm object.

Before you begin

Ensure that you have the following prerequisites:

  • A Google SecOps instance
  • A GCP project with Cloud Storage API enabled
  • Permissions to create and manage GCS buckets
  • Permissions to manage IAM policies on GCS buckets
  • Permissions to create Cloud Run services, Pub/Sub topics, and Cloud Scheduler jobs
  • Privileged access to BeyondTrust Endpoint Privilege Management tenant or API

Create Google Cloud Storage bucket

  1. Go to the Google Cloud Console .
  2. Select your project or create a new one.
  3. In the navigation menu, go to Cloud Storage > Buckets.
  4. Click Create bucket.
  5. Provide the following configuration details:

    Setting Value
    Name your bucket Enter a globally unique name (for example, beyondtrust-epm-logs )
    Location type Choose based on your needs (Region, Dual-region, Multi-region)
    Location Select the location (for example, us-central1 )
    Storage class Standard (recommended for frequently accessed logs)
    Access control Uniform (recommended)
    Protection tools Optional: Enable object versioning or retention policy
  6. Click Create.

Collect BeyondTrust EPM API credentials

  1. Sign in to the BeyondTrust Privilege Management web console as an administrator.
  2. Go to Configuration > Settings > API Settings.
  3. Click Create an API Account.
  4. Provide the following configuration details:
    • Name: Enter Google SecOps Collector .
    • API Access: Enable Audit (Read)and other scopes as required.
  5. Copy and save the Client IDand Client Secret.
  6. Copy your API base URL; it's typically https://<your-tenant>-services.pm.beyondtrustcloud.com (you'll use this as BPT_API_URL).

The Cloud Run function needs a service account with permissions to write to GCS bucket and be invoked by Pub/Sub.

  1. In the GCP Console, go to IAM & Admin > Service Accounts.
  2. Click Create Service Account.
  3. Provide the following configuration details:
    • Service account name: Enter beyondtrust-epm-collector-sa .
    • Service account description: Enter Service account for Cloud Run function to collect BeyondTrust EPM logs .
  4. Click Create and Continue.
  5. In the Grant this service account access to projectsection, add the following roles:
    1. Click Select a role.
    2. Search for and select Storage Object Admin.
    3. Click + Add another role.
    4. Search for and select Cloud Run Invoker.
    5. Click + Add another role.
    6. Search for and select Cloud Functions Invoker.
  6. Click Continue.
  7. Click Done.

These roles are required for:

  • Storage Object Admin: Write logs to GCS bucket and manage state files
  • Cloud Run Invoker: Allow Pub/Sub to invoke the function
  • Cloud Functions Invoker: Allow function invocation

Grant IAM permissions on GCS bucket

Grant the service account write permissions on the GCS bucket:

  1. Go to Cloud Storage > Buckets.
  2. Click your bucket name.
  3. Go to the Permissionstab.
  4. Click Grant access.
  5. Provide the following configuration details:
    • Add principals: Enter the service account email (for example, beyondtrust-epm-collector-sa@PROJECT_ID.iam.gserviceaccount.com ).
    • Assign roles: Select Storage Object Admin.
  6. Click Save.

Create Pub/Sub topic

Create a Pub/Sub topic that Cloud Scheduler will publish to and the Cloud Run function will subscribe to.

  1. In the GCP Console, go to Pub/Sub > Topics.
  2. Click Create topic.
  3. Provide the following configuration details:
    • Topic ID: Enter beyondtrust-epm-trigger .
    • Leave other settings as default.
  4. Click Create.

Create Cloud Run function to collect logs

The Cloud Run function is triggered by Pub/Sub messages from Cloud Scheduler to fetch logs from BeyondTrust EPM API and writes them to GCS.

  1. In the GCP Console, go to Cloud Run.
  2. Click Create service.
  3. Select Function(use an inline editor to create a function).
  4. In the Configuresection, provide the following configuration details:

    Setting Value
    Service name beyondtrust-epm-collector
    Region Select region matching your GCS bucket (for example, us-central1 )
    Runtime Select Python 3.12or later
  5. In the Trigger (optional)section:

    1. Click + Add trigger.
    2. Select Cloud Pub/Sub.
    3. In Select a Cloud Pub/Sub topic, choose the topic beyondtrust-epm-trigger .
    4. Click Save.
  6. In the Authenticationsection:

    1. Select Require authentication.
    2. Check Identity and Access Management (IAM).
  7. Scroll down and expand Containers, Networking, Security.

  8. Go to the Securitytab:

    • Service account: Select the service account beyondtrust-epm-collector-sa .
  9. Go to the Containerstab:

    1. Click Variables & Secrets.
    2. Click + Add variablefor each environment variable:
    Variable Name Example Value
    GCS_BUCKET beyondtrust-epm-logs
    GCS_PREFIX beyondtrust-epm/
    STATE_KEY beyondtrust-epm/state.json
    BPT_API_URL https://yourtenant-services.pm.beyondtrustcloud.com
    CLIENT_ID your-client-id
    CLIENT_SECRET your-client-secret
    OAUTH_SCOPE management-api
    RECORD_SIZE 1000
    MAX_ITERATIONS 10
  10. Scroll down in the Variables & Secretstab to Requests:

    • Request timeout: Enter 600 seconds (10 minutes).
  11. Go to the Settingstab in Containers:

    • In the Resourcessection:
      • Memory: Select 512 MiBor higher.
      • CPU: Select 1.
    • Click Done.
  12. Scroll to Execution environment:

    • Select Default(recommended).
  13. In the Revision scalingsection:

    • Minimum number of instances: Enter 0 .
    • Maximum number of instances: Enter 100 (or adjust based on expected load).
  14. Click Create.

  15. Wait for the service to be created (1-2 minutes).

  16. After the service is created, the inline code editoropens automatically.

Add function code

  1. Enter mainin Function entry point
  2. In the inline code editor, create two files:

    • First file: main.py:
      import 
      
     functions_framework 
     from 
      
     google.cloud 
      
     import 
      storage 
     
     import 
      
     json 
     import 
      
     os 
     import 
      
     urllib3 
     from 
      
     datetime 
      
     import 
     datetime 
     , 
     timezone 
     , 
     timedelta 
     import 
      
     time 
     # Initialize HTTP client 
     http 
     = 
     urllib3 
     . 
     PoolManager 
     () 
     # Initialize Storage client 
     storage_client 
     = 
      storage 
     
     . 
      Client 
     
     () 
     @functions_framework 
     . 
     cloud_event 
     def 
      
     main 
     ( 
     cloud_event 
     ): 
      
     """ 
     Cloud Run function triggered by Pub/Sub to fetch logs from BeyondTrust EPM API and write to GCS. 
     Args: 
     cloud_event: CloudEvent object containing Pub/Sub message 
     """ 
     # Get environment variables 
     bucket_name 
     = 
     os 
     . 
     environ 
     . 
     get 
     ( 
     'GCS_BUCKET' 
     ) 
     prefix 
     = 
     os 
     . 
     environ 
     . 
     get 
     ( 
     'GCS_PREFIX' 
     , 
     'beyondtrust-epm/' 
     ) 
     state_key 
     = 
     os 
     . 
     environ 
     . 
     get 
     ( 
     'STATE_KEY' 
     , 
     'beyondtrust-epm/state.json' 
     ) 
     # BeyondTrust EPM API credentials 
     api_url 
     = 
     os 
     . 
     environ 
     . 
     get 
     ( 
     'BPT_API_URL' 
     ) 
     client_id 
     = 
     os 
     . 
     environ 
     . 
     get 
     ( 
     'CLIENT_ID' 
     ) 
     client_secret 
     = 
     os 
     . 
     environ 
     . 
     get 
     ( 
     'CLIENT_SECRET' 
     ) 
     oauth_scope 
     = 
     os 
     . 
     environ 
     . 
     get 
     ( 
     'OAUTH_SCOPE' 
     , 
     'management-api' 
     ) 
     record_size 
     = 
     int 
     ( 
     os 
     . 
     environ 
     . 
     get 
     ( 
     'RECORD_SIZE' 
     , 
     '1000' 
     )) 
     max_iterations 
     = 
     int 
     ( 
     os 
     . 
     environ 
     . 
     get 
     ( 
     'MAX_ITERATIONS' 
     , 
     '10' 
     )) 
     if 
     not 
     all 
     ([ 
     bucket_name 
     , 
     api_url 
     , 
     client_id 
     , 
     client_secret 
     ]): 
     print 
     ( 
     'Error: Missing required environment variables' 
     ) 
     return 
     try 
     : 
     # Get GCS bucket 
     bucket 
     = 
     storage_client 
     . 
      bucket 
     
     ( 
     bucket_name 
     ) 
     # Load state (last processed timestamp) 
     state 
     = 
     load_state 
     ( 
     bucket 
     , 
     state_key 
     ) 
     last_timestamp 
     = 
      state 
     
     . 
     get 
     ( 
     'last_timestamp' 
     , 
     ( 
     datetime 
     . 
     utcnow 
     () 
     - 
     timedelta 
     ( 
     hours 
     = 
     24 
     )) 
     . 
     strftime 
     ( 
     "%Y-%m- 
     %d 
     T%H:%M:%SZ" 
     )) 
     print 
     ( 
     f 
     'Processing logs since 
     { 
     last_timestamp 
     } 
     ' 
     ) 
     # Get OAuth access token 
     token 
     = 
     get_oauth_token 
     ( 
     api_url 
     , 
     client_id 
     , 
     client_secret 
     , 
     oauth_scope 
     ) 
     # Fetch audit events 
     events 
     = 
     fetch_audit_events 
     ( 
     api_url 
     , 
     token 
     , 
     last_timestamp 
     , 
     record_size 
     , 
     max_iterations 
     ) 
     if 
     events 
     : 
     # Store events in GCS 
     current_timestamp 
     = 
     datetime 
     . 
     utcnow 
     () 
     filename 
     = 
     f 
     " 
     { 
     prefix 
     } 
     beyondtrust-epm-events- 
     { 
     current_timestamp 
     . 
     strftime 
     ( 
     '%Y%m 
     %d 
     _%H%M%S' 
     ) 
     } 
     .json" 
     store_events_to_gcs 
     ( 
     bucket 
     , 
     filename 
     , 
     events 
     ) 
     # Update state with latest timestamp 
     latest_timestamp 
     = 
     get_latest_event_timestamp 
     ( 
     events 
     ) 
     save_state 
     ( 
     bucket 
     , 
     state_key 
     , 
     { 
     'last_timestamp' 
     : 
     latest_timestamp 
     , 
     'updated_at' 
     : 
     datetime 
     . 
     utcnow 
     () 
     . 
     isoformat 
     () 
     + 
     'Z' 
     }) 
     print 
     ( 
     f 
     'Successfully processed 
     { 
     len 
     ( 
     events 
     ) 
     } 
     events and stored to 
     { 
     filename 
     } 
     ' 
     ) 
     else 
     : 
     print 
     ( 
     'No new events found' 
     ) 
     except 
     Exception 
     as 
     e 
     : 
     print 
     ( 
     f 
     'Error processing logs: 
     { 
     str 
     ( 
     e 
     ) 
     } 
     ' 
     ) 
     raise 
     def 
      
     get_oauth_token 
     ( 
     api_url 
     , 
     client_id 
     , 
     client_secret 
     , 
     scope 
     ): 
      
     """ 
     Get OAuth access token using client credentials flow for BeyondTrust EPM. 
     Uses the correct endpoint: /oauth/token 
     """ 
     token_url 
     = 
     f 
     " 
     { 
     api_url 
     } 
     /oauth/token" 
     headers 
     = 
     { 
     'Content-Type' 
     : 
     'application/x-www-form-urlencoded' 
     } 
     body 
     = 
     f 
     "grant_type=client_credentials&client_id= 
     { 
     client_id 
     } 
    & client_secret= 
     { 
     client_secret 
     } 
    & scope= 
     { 
     scope 
     } 
     " 
     response 
     = 
     http 
     . 
     request 
     ( 
     'POST' 
     , 
     token_url 
     , 
     headers 
     = 
     headers 
     , 
     body 
     = 
     body 
     , 
     timeout 
     = 
     urllib3 
     . 
     Timeout 
     ( 
     60.0 
     )) 
     if 
     response 
     . 
     status 
     != 
     200 
     : 
     raise 
     RuntimeError 
     ( 
     f 
     "Token request failed: 
     { 
     response 
     . 
     status 
     } 
      
     { 
     response 
     . 
     data 
     [: 
     256 
     ] 
     !r} 
     " 
     ) 
     token_data 
     = 
     json 
     . 
     loads 
     ( 
     response 
     . 
     data 
     . 
     decode 
     ( 
     'utf-8' 
     )) 
     return 
     token_data 
     [ 
     'access_token' 
     ] 
     def 
      
     fetch_audit_events 
     ( 
     api_url 
     , 
     access_token 
     , 
     last_timestamp 
     , 
     record_size 
     , 
     max_iterations 
     ): 
      
     """ 
     Fetch audit events using the BeyondTrust EPM API endpoint: /management-api/v2/AuditEvents 
     with query parameters for filtering and pagination 
     """ 
     headers 
     = 
     { 
     'Authorization' 
     : 
     f 
     'Bearer 
     { 
     access_token 
     } 
     ' 
     , 
     'Content-Type' 
     : 
     'application/json' 
     } 
     all_events 
     = 
     [] 
     current_start_date 
     = 
     last_timestamp 
     iterations 
     = 
     0 
     # Enforce maximum RecordSize limit of 1000 based on BeyondTrust documentation 
     record_size_limited 
     = 
     min 
     ( 
     record_size 
     , 
     1000 
     ) 
     while 
     iterations 
    < max_iterations 
     : 
     iterations 
     += 
     1 
     if 
     len 
     ( 
     all_events 
     ) 
    > = 
     10000 
     : 
     print 
     ( 
     f 
     "Reached maximum events limit (10000)" 
     ) 
     break 
     # Use the BeyondTrust EPM API endpoint for audit events 
     query_url 
     = 
     f 
     " 
     { 
     api_url 
     } 
     /management-api/v2/AuditEvents" 
     params 
     = 
     { 
     'StartDate' 
     : 
     current_start_date 
     , 
     'RecordSize' 
     : 
     record_size_limited 
     } 
     # Construct URL with query parameters 
     query_string 
     = 
     '&' 
     . 
     join 
     ([ 
     f 
     " 
     { 
     k 
     } 
     = 
     { 
     v 
     } 
     " 
     for 
     k 
     , 
     v 
     in 
     params 
     . 
     items 
     ()]) 
     full_url 
     = 
     f 
     " 
     { 
     query_url 
     } 
     ? 
     { 
     query_string 
     } 
     " 
     try 
     : 
     response 
     = 
     http 
     . 
     request 
     ( 
     'GET' 
     , 
     full_url 
     , 
     headers 
     = 
     headers 
     , 
     timeout 
     = 
     urllib3 
     . 
     Timeout 
     ( 
     300.0 
     )) 
     # Handle rate limiting with exponential backoff 
     if 
     response 
     . 
     status 
     == 
     429 
     : 
     retry_after 
     = 
     int 
     ( 
     response 
     . 
     headers 
     . 
     get 
     ( 
     'Retry-After' 
     , 
     '30' 
     )) 
     print 
     ( 
     f 
     "Rate limited (429). Retrying after 
     { 
     retry_after 
     } 
     s..." 
     ) 
     time 
     . 
     sleep 
     ( 
     retry_after 
     ) 
     continue 
     if 
     response 
     . 
     status 
     != 
     200 
     : 
     raise 
     RuntimeError 
     ( 
     f 
     "API request failed: 
     { 
     response 
     . 
     status 
     } 
      
     { 
     response 
     . 
     data 
     [: 
     256 
     ] 
     !r} 
     " 
     ) 
     response_data 
     = 
     json 
     . 
     loads 
     ( 
     response 
     . 
     data 
     . 
     decode 
     ( 
     'utf-8' 
     )) 
     events 
     = 
     response_data 
     . 
     get 
     ( 
     'events' 
     , 
     []) 
     if 
     not 
     events 
     : 
     break 
     print 
     ( 
     f 
     "Page 
     { 
     iterations 
     } 
     : Retrieved 
     { 
     len 
     ( 
     events 
     ) 
     } 
     events" 
     ) 
     all_events 
     . 
     extend 
     ( 
     events 
     ) 
     # If we got fewer events than RecordSize, we've reached the end 
     if 
     len 
     ( 
     events 
     ) 
    < record_size_limited 
     : 
     break 
     # For pagination, update StartDate to the timestamp of the last event 
     last_event 
     = 
     events 
     [ 
     - 
     1 
     ] 
     last_timestamp 
     = 
     extract_event_timestamp 
     ( 
     last_event 
     ) 
     if 
     not 
     last_timestamp 
     : 
     print 
     ( 
     "Warning: Could not find timestamp in last event for pagination" 
     ) 
     break 
     # Convert to datetime and add 1 second to avoid retrieving the same event again 
     try 
     : 
     dt 
     = 
     parse_timestamp 
     ( 
     last_timestamp 
     ) 
     dt 
     = 
     dt 
     + 
     timedelta 
     ( 
     seconds 
     = 
     1 
     ) 
     current_start_date 
     = 
     dt 
     . 
     strftime 
     ( 
     "%Y-%m- 
     %d 
     T%H:%M:%SZ" 
     ) 
     except 
     Exception 
     as 
     e 
     : 
     print 
     ( 
     f 
     "Error parsing timestamp 
     { 
     last_timestamp 
     } 
     : 
     { 
     e 
     } 
     " 
     ) 
     break 
     except 
     Exception 
     as 
     e 
     : 
     print 
     ( 
     f 
     "Error fetching page 
     { 
     iterations 
     } 
     : 
     { 
     e 
     } 
     " 
     ) 
     break 
     return 
     all_events 
     def 
      
     extract_event_timestamp 
     ( 
     event 
     ): 
      
     """Extract timestamp from event, checking multiple possible fields""" 
     # Check common timestamp fields 
     timestamp_fields 
     = 
     [ 
     'event.dateTime' 
     , 
     'event.timestamp' 
     , 
     'timestamp' 
     , 
     'eventTime' 
     , 
     'dateTime' 
     , 
     'whenOccurred' 
     , 
     'date' 
     , 
     'time' 
     , 
     'event.ingested' 
     ] 
     # Try nested event.dateTime first (common in BeyondTrust) 
     if 
     isinstance 
     ( 
     event 
     , 
     dict 
     ) 
     and 
     isinstance 
     ( 
     event 
     . 
     get 
     ( 
     "event" 
     ), 
     dict 
     ): 
     ts 
     = 
     event 
     [ 
     "event" 
     ] 
     . 
     get 
     ( 
     "dateTime" 
     ) 
     if 
     ts 
     : 
     return 
     ts 
     ts 
     = 
     event 
     [ 
     "event" 
     ] 
     . 
     get 
     ( 
     "timestamp" 
     ) 
     if 
     ts 
     : 
     return 
     ts 
     # Fallback to other timestamp fields 
     for 
     field 
     in 
     timestamp_fields 
     : 
     if 
     field 
     in 
     event 
     and 
     event 
     [ 
     field 
     ]: 
     return 
     event 
     [ 
     field 
     ] 
     return 
     None 
     def 
      
     parse_timestamp 
     ( 
     timestamp_str 
     ): 
      
     """Parse timestamp string to datetime object, handling various formats""" 
     if 
     isinstance 
     ( 
     timestamp_str 
     , 
     ( 
     int 
     , 
     float 
     )): 
     # Unix timestamp (in milliseconds or seconds) 
     if 
     timestamp_str 
    > 1e12 
     : 
     # Milliseconds 
     return 
     datetime 
     . 
     fromtimestamp 
     ( 
     timestamp_str 
     / 
     1000 
     , 
     tz 
     = 
     timezone 
     . 
     utc 
     ) 
     else 
     : 
     # Seconds 
     return 
     datetime 
     . 
     fromtimestamp 
     ( 
     timestamp_str 
     , 
     tz 
     = 
     timezone 
     . 
     utc 
     ) 
     if 
     isinstance 
     ( 
     timestamp_str 
     , 
     str 
     ): 
     # Try different string formats 
     try 
     : 
     # ISO format with Z 
     if 
     timestamp_str 
     . 
     endswith 
     ( 
     'Z' 
     ): 
     return 
     datetime 
     . 
     fromisoformat 
     ( 
     timestamp_str 
     . 
     replace 
     ( 
     'Z' 
     , 
     '+00:00' 
     )) 
     # ISO format with timezone 
     elif 
     '+' 
     in 
     timestamp_str 
     or 
     timestamp_str 
     . 
     endswith 
     ( 
     '00:00' 
     ): 
     return 
     datetime 
     . 
     fromisoformat 
     ( 
     timestamp_str 
     ) 
     # ISO format without timezone (assume UTC) 
     else 
     : 
     dt 
     = 
     datetime 
     . 
     fromisoformat 
     ( 
     timestamp_str 
     ) 
     if 
     dt 
     . 
     tzinfo 
     is 
     None 
     : 
     dt 
     = 
     dt 
     . 
     replace 
     ( 
     tzinfo 
     = 
     timezone 
     . 
     utc 
     ) 
     return 
     dt 
     except 
     ValueError 
     : 
     pass 
     raise 
     ValueError 
     ( 
     f 
     "Could not parse timestamp: 
     { 
     timestamp_str 
     } 
     " 
     ) 
     def 
      
     load_state 
     ( 
     bucket 
     , 
     key 
     ): 
      
     """Load state from GCS.""" 
     try 
     : 
     blob 
     = 
     bucket 
     . 
     blob 
     ( 
     key 
     ) 
     if 
     blob 
     . 
     exists 
     (): 
     state_data 
     = 
     blob 
     . 
      download_as_text 
     
     () 
     return 
     json 
     . 
     loads 
     ( 
     state_data 
     ) 
     except 
     Exception 
     as 
     e 
     : 
     print 
     ( 
     f 
     'Warning: Could not load state: 
     { 
     str 
     ( 
     e 
     ) 
     } 
     ' 
     ) 
     return 
     {} 
     def 
      
     save_state 
     ( 
     bucket 
     , 
     key 
     , 
     state 
     ): 
      
     """Save state to GCS.""" 
     try 
     : 
     blob 
     = 
     bucket 
     . 
     blob 
     ( 
     key 
     ) 
     blob 
     . 
      upload_from_string 
     
     ( 
     json 
     . 
     dumps 
     ( 
     state 
     ), 
     content_type 
     = 
     'application/json' 
     ) 
     except 
     Exception 
     as 
     e 
     : 
     print 
     ( 
     f 
     'Warning: Could not save state: 
     { 
     str 
     ( 
     e 
     ) 
     } 
     ' 
     ) 
     def 
      
     store_events_to_gcs 
     ( 
     bucket 
     , 
     key 
     , 
     events 
     ): 
      
     """Store events as JSONL (one JSON object per line) in GCS""" 
     # Convert to JSONL format (one JSON object per line) 
     jsonl_content 
     = 
     ' 
     \n 
     ' 
     . 
     join 
     ( 
     json 
     . 
     dumps 
     ( 
     event 
     , 
     default 
     = 
     str 
     ) 
     for 
     event 
     in 
     events 
     ) 
     blob 
     = 
     bucket 
     . 
     blob 
     ( 
     key 
     ) 
     blob 
     . 
      upload_from_string 
     
     ( 
     jsonl_content 
     , 
     content_type 
     = 
     'application/x-ndjson' 
     ) 
     def 
      
     get_latest_event_timestamp 
     ( 
     events 
     ): 
      
     """Get the latest timestamp from the events for state tracking""" 
     if 
     not 
     events 
     : 
     return 
     datetime 
     . 
     utcnow 
     () 
     . 
     isoformat 
     () 
     + 
     'Z' 
     latest 
     = 
     None 
     for 
     event 
     in 
     events 
     : 
     timestamp 
     = 
     extract_event_timestamp 
     ( 
     event 
     ) 
     if 
     timestamp 
     : 
     try 
     : 
     event_dt 
     = 
     parse_timestamp 
     ( 
     timestamp 
     ) 
     event_iso 
     = 
     event_dt 
     . 
     isoformat 
     () 
     + 
     'Z' 
     if 
     latest 
     is 
     None 
     or 
     event_iso 
    > latest 
     : 
     latest 
     = 
     event_iso 
     except 
     Exception 
     as 
     e 
     : 
     print 
     ( 
     f 
     "Error parsing event timestamp 
     { 
     timestamp 
     } 
     : 
     { 
     e 
     } 
     " 
     ) 
     continue 
     return 
     latest 
     or 
     datetime 
     . 
     utcnow 
     () 
     . 
     isoformat 
     () 
     + 
     'Z' 
     
    
    • Second file: requirements.txt:
      functions 
     - 
     framework 
     == 
     3. 
     * 
     google 
     - 
     cloud 
     - 
     storage 
     == 
     2. 
     * 
     urllib3 
    > = 
     2.0.0 
     
    
  3. Click Deployto save and deploy the function.

  4. Wait for deployment to complete (2-3 minutes).

Create Cloud Scheduler job

Cloud Scheduler publishes messages to the Pub/Sub topic at regular intervals, triggering the Cloud Run function.

  1. In the GCP Console, go to Cloud Scheduler.
  2. Click Create Job.
  3. Provide the following configuration details:

    Setting Value
    Name beyondtrust-epm-collector-hourly
    Region Select same region as Cloud Run function
    Frequency 0 * * * * (every hour, on the hour)
    Timezone Select timezone (UTC recommended)
    Target type Pub/Sub
    Topic Select the topic beyondtrust-epm-trigger
    Message body {} (empty JSON object)
  4. Click Create.

Schedule frequency options

  • Choose frequency based on log volume and latency requirements:

    Frequency Cron Expression Use Case
    Every 5 minutes
    */5 * * * * High-volume, low-latency
    Every 15 minutes
    */15 * * * * Medium volume
    Every hour
    0 * * * * Standard (recommended)
    Every 6 hours
    0 */6 * * * Low volume, batch processing
    Daily
    0 0 * * * Historical data collection

Test the scheduler job

  1. In the Cloud Schedulerconsole, find your job.
  2. Click Force runto trigger manually.
  3. Wait a few seconds and go to Cloud Run > Services > beyondtrust-epm-collector > Logs.
  4. Verify the function executed successfully.
  5. Check the GCS bucket to confirm logs were written.

Google SecOps uses a unique service account to read data from your GCS bucket. You must grant this service account access to your bucket.

  1. Go to SIEM Settings > Feeds.
  2. Click Add New Feed.
  3. Click Configure a single feed.
  4. In the Feed namefield, enter a name for the feed (for example, BeyondTrust EPM logs ).
  5. Select Google Cloud Storage V2as the Source type.
  6. Select BeyondTrust Endpoint Privilege Managementas the Log type.
  7. Click Get Service Account. A unique service account email will be displayed, for example:

      chronicle 
     - 
     12345678 
     @ 
     chronicle 
     - 
     gcp 
     - 
     prod 
     . 
     iam 
     . 
     gserviceaccount 
     . 
     com 
     
    
  8. Copy this email address for use in the next step.

The Google SecOps service account needs Storage Object Viewerrole on your GCS bucket.

  1. Go to Cloud Storage > Buckets.
  2. Click your bucket name.
  3. Go to the Permissionstab.
  4. Click Grant access.
  5. Provide the following configuration details:
    • Add principals: Paste the Google SecOps service account email.
    • Assign roles: Select Storage Object Viewer.
  6. Click Save.

Configure a feed in Google SecOps to ingest BeyondTrust EPM logs

  1. Go to SIEM Settings > Feeds.
  2. Click Add New Feed.
  3. Click Configure a single feed.
  4. In the Feed namefield, enter a name for the feed (for example, BeyondTrust EPM logs ).
  5. Select Google Cloud Storage V2as the Source type.
  6. Select BeyondTrust Endpoint Privilege Managementas the Log type.
  7. Click Next.
  8. Specify values for the following input parameters:

    • Storage bucket URL: Enter the GCS bucket URI with the prefix path:

        gs 
       : 
       //beyondtrust-epm-logs/beyondtrust-epm/ 
       
      
      • Replace:

        • beyondtrust-epm-logs : Your GCS bucket name.
        • beyondtrust-epm/ : Optional prefix/folder path where logs are stored (leave empty for root).
      • Examples:

        • Root bucket: gs://beyondtrust-epm-logs/
        • With prefix: gs://beyondtrust-epm-logs/beyondtrust-epm/
    • Source deletion option: Select the deletion option according to your preference:

      • Never: Never deletes any files after transfers (recommended for testing).
      • Delete transferred files: Deletes files after successful transfer.
      • Delete transferred files and empty directories: Deletes files and empty directories after successful transfer.

    • Maximum File Age: Include files modified in the last number of days. Default is 180 days.

    • Asset namespace: The asset namespace .

    • Ingestion labels: The label to be applied to the events from this feed.

  9. Click Next.

  10. Review your new feed configuration in the Finalizescreen, and then click Submit.

UDM mapping table

Log Field UDM Mapping Logic
agent.id
principal.asset.attribute.labels.value Mapped to label with key agent_id
agent.version
principal.asset.attribute.labels.value Mapped to label with key agent_version
ecs.version
principal.asset.attribute.labels.value Mapped to label with key ecs_version
event_data.reason
metadata.description Event description from raw log
event_datas.ActionId
metadata.product_log_id Product-specific log identifier
file.path
principal.file.full_path Full file path from the event
headers.content_length
additional.fields.value.string_value Mapped to label with key content_length
headers.content_type
additional.fields.value.string_value Mapped to label with key content_type
headers.http_host
additional.fields.value.string_value Mapped to label with key http_host
headers.http_version
network.application_protocol_version HTTP protocol version
headers.request_method
network.http.method HTTP request method
host.hostname
principal.hostname Principal hostname
host.hostname
principal.asset.hostname Principal asset hostname
host.ip
principal.asset.ip Principal asset IP address
host.ip
principal.ip Principal IP address
host.mac
principal.mac Principal MAC address
host.os.platform
principal.platform Set to MAC if equals macOS
host.os.version
principal.platform_version Operating system version
labels.related_item_id
metadata.product_log_id Related item identifier
process.command_line
principal.process.command_line Process command line
process.name
additional.fields.value.string_value Mapped to label with key process_name
process.parent.name
additional.fields.value.string_value Mapped to label with key process_parent_name
process.parent.pid
principal.process.parent_process.pid Parent process PID converted to string
process.pid
principal.process.pid Process PID converted to string
user.id
principal.user.userid User identifier
user.name
principal.user.user_display_name User display name
N/A
metadata.event_timestamp Event timestamp set to log entry timestamp
N/A
metadata.event_type GENERIC_EVENT if no principal, otherwise STATUS_UPDATE
N/A
network.application_protocol Set to HTTP if http_version field contains HTTP

Need more help? Get answers from Community members and Google SecOps professionals.

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