Created
January 23, 2018 12:49
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I have used a lambda function to automatically deactivate any access key associated with a high severity GuardDuty alert.
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#!/usr/bin/env python | |
#developed for blog post at http://www.cloudten.com.au/aws-guardduty-intelligent-threat-detection/ | |
from __future__ import print_function | |
import boto3 | |
import json | |
def lambda_handler(event, context): | |
print("Received event: " + json.dumps(event)) | |
try: | |
if ( event['service']['serviceName'] == 'guardduty' | |
and event['resource']['resourceType'] == "AccessKey" | |
and event['resource']['resourceRole'] == "TARGET" | |
and event['severity'] >= 5 | |
): | |
iam= boto3.resource('iam') | |
access_details = event['detail']['resource']['accessKeyDetails'] | |
access_key = iam.AccessKey(access_details['userName'],access_details['accessKeyId']) | |
response_status = access_key.deactivate() | |
status_code = response_status['ResponseMetadata']['HTTPStatusCode'] | |
if status_code == 200: | |
print("Key Disabled Successfully") | |
else: | |
print("Key deactivation failed") | |
return event['title'] | |
except: | |
pass | |
return 'AccessKey not found' |
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