Collect Cisco AMP for Endpoints logs

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This document explains how to ingest Cisco AMP for Endpoints logs to Google Security Operations using Google Cloud Storage. The parser transforms raw JSON formatted logs into a structured format conforming to the Chronicle UDM. It extracts fields from nested JSON objects, maps them to the UDM schema, identifies event categories, assigns severity levels, and ultimately generates a unified event output, flagging security alerts when specific conditions are met.

Before you begin

Ensure that you have the following prerequisites:

  • A Google SecOps instance
  • 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 Cisco AMP for Endpoints console

Collect Cisco AMP for Endpoints API credentials

  1. Sign in to the Cisco AMP for Endpoints console.
  2. Go to Accounts > API Credentials.
  3. Click New API Credential to create a new API key and client ID.
  4. Provide the following configuration details:
    • Application Name: Enter a name (for example, Chronicle SecOps Integration).
    • Scope: Select Read-only for basic event polling.
  5. Click Create.
  6. Copy and save in a secure location the following details:
    • 3API Client ID
    • API Key
    • API Base URL: Depending on your region:
      • US: https://api.amp.cisco.com
      • EU: https://api.eu.amp.cisco.com
      • APJC: https://api.apjc.amp.cisco.com

Verify permissions

To verify the account has the required permissions:

  1. Sign in to Cisco AMP for Endpoints console.
  2. Go to Accounts > API Credentials.
  3. If you can see the API Credentials page and your newly created credential is listed, you have the required permissions.
  4. If you cannot see this option, contact your administrator to grant API access permissions.

Test API access

  • Test your credentials before proceeding with the integration:

    # Replace with your actual credentials
    AMP_CLIENT_ID="your-client-id"
    AMP_API_KEY="your-api-key"
    API_BASE="https://api.amp.cisco.com"
    
    # Test API access
    curl -v -u "${AMP_CLIENT_ID}:${AMP_API_KEY}" "${API_BASE}/v1/events?limit=1"
    

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, cisco-amp-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.

Create service account for Cloud Run function

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

Create service account

  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 cisco-amp-collector-sa.
    • Service account description: Enter Service account for Cloud Run function to collect Cisco AMP for Endpoints logs.
  4. Click Create and Continue.
  5. In the Grant this service account access to project section, 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 (cisco-amp-collector-sa) write permissions on the GCS bucket:

  1. Go to Cloud Storage > Buckets.
  2. Click your bucket name.
  3. Go to the Permissions tab.
  4. Click Grant access.
  5. Provide the following configuration details:
    • Add principals: Enter the service account email (for example, cisco-amp-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 cisco-amp-events-trigger.
    • Leave other settings as default.
  4. Click Create.

Create Cloud Run function to collect logs

The Cloud Run function will be triggered by Pub/Sub messages from Cloud Scheduler to fetch logs from Cisco AMP for Endpoints API and write 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 Configure section, provide the following configuration details:

    Setting Value
    Service name cisco-amp-events-collector
    Region Select region matching your GCS bucket (for example, us-central1)
    Runtime Select Python 3.12 or 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 Pub/Sub topic (cisco-amp-events-trigger).
    4. Click Save.
  6. In the Authentication section:

    • Select Require authentication.
    • Select Identity and Access Management (IAM).
  1. Scroll to and expand Containers, Networking, Security.
  2. Go to the Security tab:
    • Service account: Select the service account (cisco-amp-collector-sa).
  3. Go to the Containers tab:

    • Click Variables & Secrets.
    • Click + Add variable for each environment variable:

      Variable Name Example Value Description
      GCS_BUCKET cisco-amp-logs GCS bucket name
      GCS_PREFIX cisco-amp-events/ Prefix for log files
      STATE_KEY cisco-amp-events/state.json State file path
      API_BASE https://api.amp.cisco.com API base URL
      AMP_CLIENT_ID your-client-id API client ID
      AMP_API_KEY your-api-key API key
      PAGE_SIZE 500 Records per page
      MAX_PAGES 10 Maximum pages to fetch
  4. In the Variables & Secrets section, scroll to Requests:

    • Request timeout: Enter 600 seconds (10 minutes).
  5. Go to the Settings tab:

    • In the Resources section:
      • Memory: Select 512 MiB or higher.
      • CPU: Select 1.
  6. In the Revision scaling section:

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

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

  9. After the service is created, the inline code editor will open automatically.

Add function code

  1. Enter main in the Entry point field.
  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
    import base64
    
    # Initialize HTTP client with timeouts
    http = urllib3.PoolManager(
        timeout=urllib3.Timeout(connect=5.0, read=30.0),
        retries=False,
    )
    
    # Initialize Storage client
    storage_client = storage.Client()
    
    # Environment variables
    GCS_BUCKET = os.environ.get('GCS_BUCKET')
    GCS_PREFIX = os.environ.get('GCS_PREFIX', 'cisco-amp-events/')
    STATE_KEY = os.environ.get('STATE_KEY', 'cisco-amp-events/state.json')
    API_BASE = os.environ.get('API_BASE')
    AMP_CLIENT_ID = os.environ.get('AMP_CLIENT_ID')
    AMP_API_KEY = os.environ.get('AMP_API_KEY')
    PAGE_SIZE = int(os.environ.get('PAGE_SIZE', '500'))
    MAX_PAGES = int(os.environ.get('MAX_PAGES', '10'))
    
    def parse_datetime(value: str) -> datetime:
        """Parse ISO datetime string to datetime object."""
        if value.endswith("Z"):
            value = value[:-1] + "+00:00"
        return datetime.fromisoformat(value)
    
    @functions_framework.cloud_event
    def main(cloud_event):
        """
        Cloud Run function triggered by Pub/Sub to fetch Cisco AMP events and write to GCS.
    
        Args:
            cloud_event: CloudEvent object containing Pub/Sub message
        """
    
        if not all([GCS_BUCKET, API_BASE, AMP_CLIENT_ID, AMP_API_KEY]):
            print('Error: Missing required environment variables')
            return
    
        try:
            # Get GCS bucket
            bucket = storage_client.bucket(GCS_BUCKET)
    
            # Load state
            state = load_state(bucket, STATE_KEY)
    
            # Determine time window
            now = datetime.now(timezone.utc)
            last_time = None
    
            if isinstance(state, dict) and state.get("last_event_time"):
                try:
                    last_time = parse_datetime(state["last_event_time"])
                    # Overlap by 2 minutes to catch any delayed events
                    last_time = last_time - timedelta(minutes=2)
                except Exception as e:
                    print(f"Warning: Could not parse last_event_time: {e}")
    
            if last_time is None:
                last_time = now - timedelta(days=1)
    
            print(f"Fetching logs from {last_time.isoformat()} to {now.isoformat()}")
    
            # Fetch logs
            records, newest_event_time = fetch_logs(
                api_base=API_BASE,
                client_id=AMP_CLIENT_ID,
                api_key=AMP_API_KEY,
                start_time=last_time,
                page_size=PAGE_SIZE,
                max_pages=MAX_PAGES,
            )
    
            if not records:
                print("No new log records found.")
                save_state(bucket, STATE_KEY, now.isoformat())
                return
    
            # Write to GCS as NDJSON
            timestamp = now.strftime('%Y%m%d_%H%M%S')
            object_key = f"{GCS_PREFIX}cisco_amp_events_{timestamp}.ndjson"
            blob = bucket.blob(object_key)
    
            ndjson = '\n'.join([json.dumps(record, ensure_ascii=False) for record in records]) + '\n'
            blob.upload_from_string(ndjson, content_type='application/x-ndjson')
    
            print(f"Wrote {len(records)} records to gs://{GCS_BUCKET}/{object_key}")
    
            # Update state with newest event time
            if newest_event_time:
                save_state(bucket, STATE_KEY, newest_event_time)
            else:
                save_state(bucket, STATE_KEY, now.isoformat())
    
            print(f"Successfully processed {len(records)} records")
    
        except Exception as e:
            print(f'Error processing logs: {str(e)}')
            raise
    
    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: {e}")
    
        return {}
    
    def save_state(bucket, key, last_event_time_iso: str):
        """Save the last event timestamp to GCS state file."""
        try:
            state = {'last_event_time': last_event_time_iso}
            blob = bucket.blob(key)
            blob.upload_from_string(
                json.dumps(state, indent=2),
                content_type='application/json'
            )
            print(f"Saved state: last_event_time={last_event_time_iso}")
        except Exception as e:
            print(f"Warning: Could not save state: {e}")
    
    def fetch_logs(api_base: str, client_id: str, api_key: str, start_time: datetime, page_size: int, max_pages: int):
        """
        Fetch logs from Cisco AMP for Endpoints API with pagination and rate limiting.
    
        Args:
            api_base: API base URL
            client_id: API client ID
            api_key: API key
            start_time: Start time for log query
            page_size: Number of records per page
            max_pages: Maximum total pages to fetch
    
        Returns:
            Tuple of (records list, newest_event_time ISO string)
        """
        # Clean up base URL
        base_url = api_base.rstrip('/')
    
        endpoint = f"{base_url}/v1/events"
    
        # Create Basic Auth header
        auth_string = f"{client_id}:{api_key}"
        auth_bytes = auth_string.encode('utf-8')
        auth_b64 = base64.b64encode(auth_bytes).decode('utf-8')
    
        headers = {
            'Authorization': f'Basic {auth_b64}',
            'Accept': 'application/json',
            'User-Agent': 'GoogleSecOps-CiscoAMPCollector/1.0'
        }
    
        records = []
        newest_time = None
        page_num = 0
        backoff = 1.0
    
        # Build initial URL with start_date parameter
        start_date_str = start_time.isoformat() + 'Z' if not start_time.isoformat().endswith('Z') else start_time.isoformat()
        next_url = f"{endpoint}?limit={page_size}&start_date={start_date_str}"
    
        while next_url and page_num < max_pages:
            page_num += 1
    
            try:
                response = http.request('GET', next_url, headers=headers)
    
                # Handle rate limiting with exponential backoff
                if response.status == 429:
                    retry_after = int(response.headers.get('Retry-After', str(int(backoff))))
                    print(f"Rate limited (429). Retrying after {retry_after}s...")
                    time.sleep(retry_after)
                    backoff = min(backoff * 2, 30.0)
                    continue
    
                backoff = 1.0
    
                if response.status != 200:
                    print(f"HTTP Error: {response.status}")
                    response_text = response.data.decode('utf-8')
                    print(f"Response body: {response_text[:256]}")
                    return [], None
    
                data = json.loads(response.data.decode('utf-8'))
    
                # Extract events from response
                page_results = data.get('data', [])
    
                if not page_results:
                    print(f"No more results (empty page)")
                    break
    
                print(f"Page {page_num}: Retrieved {len(page_results)} events")
                records.extend(page_results)
    
                # Track newest event time
                for event in page_results:
                    try:
                        event_time = event.get('date')
                        if event_time:
                            if newest_time is None or parse_datetime(event_time) > parse_datetime(newest_time):
                                newest_time = event_time
                    except Exception as e:
                        print(f"Warning: Could not parse event time: {e}")
    
                # Check for next page URL in metadata
                next_url = data.get('metadata', {}).get('links', {}).get('next')
    
                if not next_url:
                    print("No more pages (no next URL)")
                    break
    
            except Exception as e:
                print(f"Error fetching logs: {e}")
                return [], None
    
        print(f"Retrieved {len(records)} total records from {page_num} pages")
        return records, newest_time
    
    • Second file: requirements.txt:
    functions-framework==3.*
    google-cloud-storage==2.*
    urllib3>=2.0.0
    
  3. Click Deploy to 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 cisco-amp-events-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 Pub/Sub topic (cisco-amp-events-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 integration

  1. In the Cloud Scheduler console, find your job.
  2. Click Force run to trigger the job manually.
  3. Wait a few seconds.
  4. Go to Cloud Run > Services.
  5. Click your function name (cisco-amp-events-collector).
  6. Click the Logs tab.
  7. Verify the function executed successfully. Look for the following:

    Fetching logs from YYYY-MM-DDTHH:MM:SS+00:00 to YYYY-MM-DDTHH:MM:SS+00:00
    Page 1: Retrieved X events
    Wrote X records to gs://cisco-amp-logs/cisco-amp-events/cisco_amp_events_YYYYMMDD_HHMMSS.ndjson
    Successfully processed X records
    
  8. Go to Cloud Storage > Buckets.

  9. Click your bucket name.

  10. Navigate to the prefix folder (cisco-amp-events/).

  11. Verify that a new .ndjson file was created with the current timestamp.

If you see errors in the logs:

  • HTTP 401: Check API credentials in environment variables
  • HTTP 403: Verify account has required permissions
  • HTTP 429: Rate limiting - function will automatically retry with backoff
  • Missing environment variables: Check all required variables are set

Retrieve the Google SecOps service account

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

Get the service account email

  1. Go to SIEM Settings > Feeds.
  2. Click Add New Feed.
  3. Click Configure a single feed.
  4. In the Feed name field, enter a name for the feed (for example, Cisco AMP for Endpoints logs).
  5. Select Google Cloud Storage V2 as the Source type.
  6. Select Cisco AMP as the Log type.
  7. Click Get Service Account. A unique service account email is displayed, for example:

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

Grant IAM permissions to the Google SecOps service account

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

  1. Go to Cloud Storage > Buckets.
  2. Click your bucket name.
  3. Go to the Permissions tab.
  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 Cisco AMP for Endpoints logs

  1. Go to SIEM Settings > Feeds.
  2. Click Add New Feed.
  3. Click Configure a single feed.
  4. In the Feed name field, enter a name for the feed (for example, Cisco AMP for Endpoints logs).
  5. Select Google Cloud Storage V2 as the Source type.
  6. Select Cisco AMP as 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://cisco-amp-logs/cisco-amp-events/
      
      • Replace:
        • cisco-amp-logs: Your GCS bucket name.
        • cisco-amp-events/: Prefix/folder path where logs are stored.
    • 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 Finalize screen, and then click Submit.

UDM mapping table

Log Field UDM Mapping Logic
active read_only_udm.principal.asset.active Directly mapped from computer.active
connector_guid read_only_udm.principal.asset.uuid Directly mapped from computer.connector_guid
date read_only_udm.metadata.event_timestamp.seconds Directly mapped from date after converting to timestamp
detection read_only_udm.security_result.threat_name Directly mapped from detection
detection_id read_only_udm.security_result.detection_fields.value Directly mapped from detection_id
disposition read_only_udm.security_result.description Directly mapped from file.disposition
error.error_code read_only_udm.security_result.detection_fields.value Directly mapped from error.error_code
error.description read_only_udm.security_result.detection_fields.value Directly mapped from error.description
event_type read_only_udm.metadata.product_event_type Directly mapped from event_type
event_type_id read_only_udm.metadata.product_log_id Directly mapped from event_type_id
external_ip read_only_udm.principal.asset.external_ip Directly mapped from computer.external_ip
file.file_name read_only_udm.target.file.names Directly mapped from file.file_name
file.file_path read_only_udm.target.file.full_path Directly mapped from file.file_path
file.identity.md5 read_only_udm.security_result.about.file.md5 Directly mapped from file.identity.md5
file.identity.md5 read_only_udm.target.file.md5 Directly mapped from file.identity.md5
file.identity.sha1 read_only_udm.security_result.about.file.sha1 Directly mapped from file.identity.sha1
file.identity.sha1 read_only_udm.target.file.sha1 Directly mapped from file.identity.sha1
file.identity.sha256 read_only_udm.security_result.about.file.sha256 Directly mapped from file.identity.sha256
file.identity.sha256 read_only_udm.target.file.sha256 Directly mapped from file.identity.sha256
file.parent.disposition read_only_udm.target.resource.attribute.labels.value Directly mapped from file.parent.disposition
file.parent.file_name read_only_udm.target.resource.attribute.labels.value Directly mapped from file.parent.file_name
file.parent.identity.md5 read_only_udm.target.resource.attribute.labels.value Directly mapped from file.parent.identity.md5
file.parent.identity.sha1 read_only_udm.target.resource.attribute.labels.value Directly mapped from file.parent.identity.sha1
file.parent.identity.sha256 read_only_udm.target.resource.attribute.labels.value Directly mapped from file.parent.identity.sha256
file.parent.process_id read_only_udm.security_result.about.process.parent_process.pid Directly mapped from file.parent.process_id
file.parent.process_id read_only_udm.target.process.parent_process.pid Directly mapped from file.parent.process_id
hostname read_only_udm.principal.asset.hostname Directly mapped from computer.hostname
hostname read_only_udm.target.hostname Directly mapped from computer.hostname
hostname read_only_udm.target.asset.hostname Directly mapped from computer.hostname
ip read_only_udm.principal.asset.ip Directly mapped from computer.network_addresses.ip
ip read_only_udm.principal.ip Directly mapped from computer.network_addresses.ip
ip read_only_udm.security_result.about.ip Directly mapped from computer.network_addresses.ip
mac read_only_udm.principal.mac Directly mapped from computer.network_addresses.mac
mac read_only_udm.security_result.about.mac Directly mapped from computer.network_addresses.mac
severity read_only_udm.security_result.severity Mapped from severity based on the following logic: - "Medium" -> "MEDIUM" - "High" or "Critical" -> "HIGH" - "Low" -> "LOW" - Otherwise -> "UNKNOWN_SEVERITY"
timestamp read_only_udm.metadata.event_timestamp.seconds Directly mapped from timestamp
user read_only_udm.security_result.about.user.user_display_name Directly mapped from computer.user
user read_only_udm.target.user.user_display_name Directly mapped from computer.user
vulnerabilities.cve read_only_udm.extensions.vulns.vulnerabilities.cve_id Directly mapped from vulnerabilities.cve
vulnerabilities.name read_only_udm.extensions.vulns.vulnerabilities.name Directly mapped from vulnerabilities.name
vulnerabilities.score read_only_udm.extensions.vulns.vulnerabilities.cvss_base_score Directly mapped from vulnerabilities.score after converting to float
vulnerabilities.url read_only_udm.extensions.vulns.vulnerabilities.vendor_knowledge_base_article_id Directly mapped from vulnerabilities.url
vulnerabilities.version read_only_udm.extensions.vulns.vulnerabilities.cvss_version Directly mapped from vulnerabilities.version
is_alert Set to true if event_type is one of the following: "Threat Detected", "Exploit Prevention", "Executed malware", "Potential Dropper Infection", "Multiple Infected Files", "Vulnerable Application Detected" or if security_result.severity is "HIGH"
is_significant Set to true if event_type is one of the following: "Threat Detected", "Exploit Prevention", "Executed malware", "Potential Dropper Infection", "Multiple Infected Files", "Vulnerable Application Detected" or if security_result.severity is "HIGH"
read_only_udm.metadata.event_type Determined based on event_type and security_result.severity values. - If event_type is one of the following: "Executed malware", "Threat Detected", "Potential Dropper Infection", "Cloud Recall Detection", "Malicious Activity Detection", "Exploit Prevention", "Multiple Infected Files", "Cloud IOC", "System Process Protection", "Vulnerable Application Detected", "Threat Quarantined", "Execution Blocked", "Cloud Recall Quarantine Successful", "Cloud Recall Restore from Quarantine Failed", "Cloud Recall Quarantine Attempt Failed", "Quarantine Failure", then the event type is set to "SCAN_FILE". - If security_result.severity is "HIGH", then the event type is set to "SCAN_FILE". - If both has_principal and has_target are true, then the event type is set to "SCAN_UNCATEGORIZED". - Otherwise, the event type is set to "GENERIC_EVENT".
read_only_udm.metadata.log_type Set to "CISCO_AMP"
read_only_udm.metadata.vendor_name Set to "CISCO_AMP"
read_only_udm.security_result.about.file.full_path Directly mapped from file.file_path
read_only_udm.security_result.about.hostname Directly mapped from computer.hostname
read_only_udm.security_result.about.user.user_display_name Directly mapped from computer.user
read_only_udm.security_result.detection_fields.key Set to "Detection ID" for detection_id, "Error Code" for error.error_code, "Error Description" for error.description, "Parent Disposition" for file.parent.disposition, "Parent File Name" for file.parent.file_name, "Parent MD5" for file.parent.identity.md5, "Parent SHA1" for file.parent.identity.sha1, and "Parent SHA256" for file.parent.identity.sha256
read_only_udm.security_result.summary Set to event_type if event_type is one of the following: "Threat Detected", "Exploit Prevention", "Executed malware", "Potential Dropper Infection", "Multiple Infected Files", "Vulnerable Application Detected" or if security_result.severity is "HIGH"
read_only_udm.target.asset.ip Directly mapped from computer.network_addresses.ip
read_only_udm.target.resource.attribute.labels.key Set to "Parent Disposition" for file.parent.disposition, "Parent File Name" for file.parent.file_name, "Parent MD5" for file.parent.identity.md5, "Parent SHA1" for file.parent.identity.sha1, and "Parent SHA256" for file.parent.identity.sha256
timestamp.seconds Directly mapped from date after converting to timestamp

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