Collect CrowdStrike IDP Services logs

Supported in:

Google secops SIEM

This document explains how to ingest CrowdStrike Identity Protection (IDP) Services logs to Google Security Operations using Amazon S3. The integration uses the CrowdStrike Unified Alerts API to collect Identity Protection events and stores them in NDJSON format for processing by the built-in CS_IDP parser.

Before you begin

Make sure you have the following prerequisites:

A Google SecOps instance.
Privileged access to CrowdStrike Falcon Console and API key management.
Privileged access to AWS (S3, Identity and Access Management (IAM), Lambda, EventBridge).

Get CrowdStrike Identity Protection prerequisites

Sign in to the CrowdStrike Falcon Console.
Go to Support and Resources > API clients and keys.
Click Add new API Client.
Provide the following configuration details:
- Client Name: Enter Google SecOps IDP Integration.
- Description: Enter API client for Google SecOps integration.
- Scopes: Select Alerts: READ (alerts:read) scope (this includes Identity Protection alerts).
Click Add.
Copy and save in a secure location the following details:
- Client ID
- Client Secret (this is only shown once)
- Base URL (examples: api.crowdstrike.com for US-1, api.us-2.crowdstrike.com for US-2, api.eu-1.crowdstrike.com for EU-1)

Configure AWS S3 bucket and IAM for Google SecOps

Create Amazon S3 bucket following this user guide: Creating a bucket
Save bucket Name and Region for future reference (for example, crowdstrike-idp-logs-bucket).
Create a User following this user guide: Creating an IAM user.
Select the created User.
Select Security credentials tab.
Click Create Access Key in section Access Keys.
Select Third-party service as Use case.
Click Next.
Optional: Add description tag.
Click Create access key.
Click Download .CSV file to save the Access Key and Secret Access Key for future reference.
Click Done.
Select Permissions tab.
Click Add permissions in section Permissions policies.
Select Add permissions.
Select Attach policies directly.
Search for AmazonS3FullAccess policy.
Select the policy.
Click Next.
Click Add permissions.

Configure the IAM policy and role for S3 uploads

In the AWS console, go to IAM > Policies.
Click Create policy > JSON tab.
Copy and paste the following policy.

Policy JSON (replace crowdstrike-idp-logs-bucket if you entered a different bucket name):

{
  "Version": "2012-10-17",
  "Statement": [
    {
      "Sid": "AllowPutObjects",
      "Effect": "Allow",
      "Action": "s3:PutObject",
      "Resource": "arn:aws:s3:::crowdstrike-idp-logs-bucket/*"
    },
    {
      "Sid": "AllowGetStateObject",
      "Effect": "Allow",
      "Action": "s3:GetObject",
      "Resource": "arn:aws:s3:::crowdstrike-idp-logs-bucket/crowdstrike-idp/state.json"
    }
  ]
}

Click Next > Create policy.
Go to IAM > Roles > Create role > AWS service > Lambda.
Attach the newly created policy.
Name the role CrowdStrike-IDP-Lambda-Role and click Create role.

Create the Lambda function

In the AWS Console, go to Lambda > Functions > Create function.
Click Author from scratch.
Provide the following configuration details:

Setting Value

Name CrowdStrike-IDP-Collector

Runtime Python 3.13

Architecture x86_64

Execution role CrowdStrike-IDP-Lambda-Role

Setting	Value
Name	`CrowdStrike-IDP-Collector`
Runtime	Python 3.13
Architecture	x86_64
Execution role	`CrowdStrike-IDP-Lambda-Role`

After the function is created, open the Code tab, delete the stub and paste the following code:

import json
import boto3
import urllib3
import os
from datetime import datetime, timezone
from urllib.parse import urlencode

HTTP = urllib3.PoolManager()

def lambda_handler(event, context):
    """
    Fetch CrowdStrike Identity Protection alerts (Unified Alerts API)
    and store RAW JSON (NDJSON) to S3 for the CS_IDP parser.
    No transformation is performed.
    """
    # Environment variables
    s3_bucket = os.environ['S3_BUCKET']
    s3_prefix = os.environ['S3_PREFIX']
    state_key = os.environ['STATE_KEY']
    client_id = os.environ['CROWDSTRIKE_CLIENT_ID']
    client_secret = os.environ['CROWDSTRIKE_CLIENT_SECRET']
    api_base = os.environ['API_BASE']

    s3 = boto3.client('s3')

    token = get_token(client_id, client_secret, api_base)
    last_ts = get_last_timestamp(s3, s3_bucket, state_key)

    # FQL filter for Identity Protection alerts only, newer than checkpoint
    fql_filter = f"product:'idp'+updated_timestamp:>'{last_ts}'"
    sort = 'updated_timestamp.asc'

    # Step 1: Get list of alert IDs
    all_ids = []
    per_page = int(os.environ.get('ALERTS_LIMIT', '1000'))  # up to 10000 per SDK docs
    offset = 0
    while True:
        page_ids = query_alert_ids(api_base, token, fql_filter, sort, per_page, offset)
        if not page_ids:
            break
        all_ids.extend(page_ids)
        if len(page_ids) < per_page:
            break
        offset += per_page

    if not all_ids:
        return {'statusCode': 200, 'body': 'No new Identity Protection alerts.'}

    # Step 2: Get alert details in batches (max 1000 IDs per request)
    details = []
    max_batch = 1000
    for i in range(0, len(all_ids), max_batch):
        batch = all_ids[i:i+max_batch]
        details.extend(fetch_alert_details(api_base, token, batch))

    if details:
        details.sort(key=lambda d: d.get('updated_timestamp', d.get('created_timestamp', '')))
        latest = details[-1].get('updated_timestamp') or details[-1].get('created_timestamp')

        key = f"{s3_prefix}cs_idp_{datetime.now(timezone.utc).strftime('%Y%m%d_%H%M%S')}.json"
        body = '\n'.join(json.dumps(d, separators=(',', ':')) for d in details)

        s3.put_object(
            Bucket=s3_bucket,
            Key=key,
            Body=body.encode('utf-8'),
            ContentType='application/x-ndjson'
        )

        update_state(s3, s3_bucket, state_key, latest)

    return {'statusCode': 200, 'body': f'Wrote {len(details)} alerts to S3.'}

def get_token(client_id, client_secret, api_base):
    """Get OAuth2 token from CrowdStrike API"""
    url = f"https://{api_base}/oauth2/token"
    data = f"client_id={client_id}&client_secret={client_secret}&grant_type=client_credentials"
    headers = {'Content-Type': 'application/x-www-form-urlencoded'}
    r = HTTP.request('POST', url, body=data, headers=headers)
    if r.status != 200:
        raise Exception(f'Auth failed: {r.status} {r.data}')
    return json.loads(r.data.decode('utf-8'))['access_token']

def query_alert_ids(api_base, token, fql_filter, sort, limit, offset):
    """Query alert IDs using filters"""
    url = f"https://{api_base}/alerts/queries/alerts/v2"
    params = {'filter': fql_filter, 'sort': sort, 'limit': str(limit), 'offset': str(offset)}
    qs = urlencode(params)
    r = HTTP.request('GET', f"{url}?{qs}", headers={'Authorization': f'Bearer {token}'})
    if r.status != 200:
        raise Exception(f'Query alerts failed: {r.status} {r.data}')
    resp = json.loads(r.data.decode('utf-8'))
    return resp.get('resources', [])

def fetch_alert_details(api_base, token, composite_ids):
    """Fetch detailed alert data by composite IDs"""
    url = f"https://{api_base}/alerts/entities/alerts/v2"
    body = {'composite_ids': composite_ids}
    headers = {'Authorization': f'Bearer {token}', 'Content-Type': 'application/json'}
    r = HTTP.request('POST', url, body=json.dumps(body).encode('utf-8'), headers=headers)
    if r.status != 200:
        raise Exception(f'Fetch alert details failed: {r.status} {r.data}')
    resp = json.loads(r.data.decode('utf-8'))
    return resp.get('resources', [])

def get_last_timestamp(s3, bucket, key, default='2023-01-01T00:00:00Z'):
    """Get last processed timestamp from S3 state file"""
    try:
        obj = s3.get_object(Bucket=bucket, Key=key)
        state = json.loads(obj['Body'].read().decode('utf-8'))
        return state.get('last_timestamp', default)
    except s3.exceptions.NoSuchKey:
        return default

def update_state(s3, bucket, key, ts):
    """Update last processed timestamp in S3 state file"""
    state = {'last_timestamp': ts, 'updated': datetime.now(timezone.utc).isoformat()}
    s3.put_object(Bucket=bucket, Key=key, Body=json.dumps(state).encode('utf-8'), ContentType='application/json')

Go to Configuration > Environment variables.
Click Edit > Add new environment variable.

Enter the environment variables provided in the following able, replacing the example values with your values.

Environment variables

Key	Example value
`S3_BUCKET`	`crowdstrike-idp-logs-bucket`
`S3_PREFIX`	`crowdstrike-idp/`
`STATE_KEY`	`crowdstrike-idp/state.json`
`CROWDSTRIKE_CLIENT_ID`	`<your-client-id>`
`CROWDSTRIKE_CLIENT_SECRET`	`<your-client-secret>`
`API_BASE`	`api.crowdstrike.com` (US-1), `api.us-2.crowdstrike.com` (US-2), `api.eu-1.crowdstrike.com` (EU-1)
`ALERTS_LIMIT`	`1000` (optional, max 10000 per page)

After the function is created, stay on its page (or open Lambda > Functions > your-function).
Select the Configuration tab.
In the General configuration panel click Edit.
Change Timeout to 5 minutes (300 seconds) and click Save.

Note: Timeout is a hard upper limit, meaning if the function is still running when the timer hits 5 minutes, AWS Lambda will terminate it. Any shorter execution just finishes normally; you are billed only for the actual run time.

Create an EventBridge schedule

Go to Amazon EventBridge > Scheduler > Create schedule.
Provide the following configuration details:
- Recurring schedule: Rate (15 minutes).
- Target: your Lambda function CrowdStrike-IDP-Collector.
- Name: CrowdStrike-IDP-Collector-15m.
Click Create schedule.

(Optional) Create read-only IAM user & keys for Google SecOps

Go to AWS Console > IAM > Users.
Click Add users.
Provide the following configuration details:
- User: Enter secops-reader.
- Access type: Select Access key – Programmatic access.
Click Create user.
Attach minimal read policy (custom): Users > secops-reader > Permissions > Add permissions > Attach policies directly > Create policy.

JSON:

{
  "Version": "2012-10-17",
  "Statement": [
    {
      "Effect": "Allow",
      "Action": ["s3:GetObject"],
      "Resource": "arn:aws:s3:::crowdstrike-idp-logs-bucket/*"
    },
    {
      "Effect": "Allow",
      "Action": ["s3:ListBucket"],
      "Resource": "arn:aws:s3:::crowdstrike-idp-logs-bucket"
    }
  ]
}

Name = secops-reader-policy.
Click Create policy > search/select > Next > Add permissions.
Create access key for secops-reader: Security credentials > Access keys.
Click Create access key.
Download the .CSV. (You'll paste these values into the feed).

Configure a feed in Google SecOps to ingest CrowdStrike Identity Protection Services logs

Go to SIEM Settings > Feeds.
Click + Add New Feed.
In the Feed name field, enter a name for the feed (for example, CrowdStrike Identity Protection Services logs).
Select Amazon S3 V2 as the Source type.
Select Crowdstrike Identity Protection Services as the Log type.
Click Next.
Specify values for the following input parameters:
- S3 URI: s3://crowdstrike-idp-logs-bucket/crowdstrike-idp/
- Source deletion options: Select deletion option according to your preference.
- Maximum File Age: Include files modified in the last number of days. Default is 180 days.
- Access Key ID: User access key with access to the S3 bucket.
- Secret Access Key: User secret key with access to the S3 bucket.
- Asset namespace: The asset namespace.
- Ingestion labels: The label applied to the events from this feed.
Click Next.
Review your new feed configuration in the Finalize screen, and then click Submit.

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