name: AWS CloudTrail DeleteKnowledgeBase
id: a8c47f25-5693-4d1a-9f8b-6e94d15ac2d9
version: 2
creation_date: '2025-04-17'
modification_date: '2026-05-13'
author: Bhavin Patel, Splunk
description: Logs an event when a knowledge base is deleted within the AWS CloudTrail.
mitre_components:
    - Cloud Service Modification
source: aws_cloudtrail
sourcetype: aws:cloudtrail
separator: eventName
separator_value: DeleteKnowledgeBase
supported_TA:
    - name: Splunk Add-on for AWS
      url: https://splunkbase.splunk.com/app/1876
      version: 8.1.2
fields:
    - _time
    - action
    - app
    - awsRegion
    - aws_account_id
    - change_type
    - command
    - date_hour
    - date_mday
    - date_minute
    - date_month
    - date_second
    - date_wday
    - date_year
    - date_zone
    - direction
    - dvc
    - errorCode
    - eventCategory
    - eventID
    - eventName
    - eventSource
    - eventTime
    - eventType
    - eventVersion
    - eventtype
    - host
    - index
    - linecount
    - managementEvent
    - msg
    - object_category
    - product
    - protocol
    - protocol_code
    - punct
    - readOnly
    - recipientAccountId
    - region
    - requestID
    - requestParameters.knowledgeBaseId
    - responseElements.requestId
    - signature
    - source
    - sourceIPAddress
    - sourcetype
    - splunk_server
    - src
    - src_ip
    - src_ip_range
    - start_time
    - status
    - tag
    - tag::eventtype
    - timeendpos
    - timestartpos
    - user
    - userAgent
    - userIdentity.accessKeyId
    - userIdentity.accountId
    - userIdentity.arn
    - userIdentity.principalId
    - userIdentity.sessionContext.attributes.creationDate
    - userIdentity.sessionContext.attributes.mfaAuthenticated
    - userIdentity.sessionContext.sessionIssuer.accountId
    - userIdentity.sessionContext.sessionIssuer.arn
    - userIdentity.sessionContext.sessionIssuer.principalId
    - userIdentity.sessionContext.sessionIssuer.type
    - userIdentity.sessionContext.sessionIssuer.userName
    - userIdentity.type
    - userName
    - user_access_key
    - user_agent
    - user_arn
    - user_group_id
    - user_id
    - user_name
    - user_type
    - vendor
    - vendor_account
    - vendor_product
    - vendor_region
output_fields:
    - dest
    - user
    - user_agent
    - src
    - vendor_account
    - vendor_region
    - vendor_product
example_log: '{"eventVersion": "1.09", "userIdentity": {"type": "AssumedRole", "principalId": "AROA:bpatel@splunk.com", "arn": "arn:aws:sts::111111111:assumed-role/daftpunk/bpatel@splunk.com", "accountId": "111111111", "accessKeyId": "ASIAYTOGP2RLLIVGGYLX", "sessionContext": {"sessionIssuer": {"type": "Role", "principalId": "AROA", "arn": "arn:aws:iam::111111111:role/aws-reserved/sso.amazonaws.com/us-west-2/daftpunk", "accountId": "111111111", "userName": "daftpunk"}, "attributes": {"creationDate": "2025-04-03T21:50:08Z", "mfaAuthenticated": "false"}}}, "eventTime": "2025-04-03T23:49:06Z", "eventSource": "bedrock.amazonaws.com", "eventName": "DeleteKnowledgeBase", "awsRegion": "us-west-2", "sourceIPAddress": "23.93.242.200", "userAgent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/134.0.0.0 Safari/537.36", "requestParameters": {"knowledgeBaseId": "T9PFUXGAPO"}, "responseElements": {"Access-Control-Expose-Headers": "x-amzn-Apigw-id,x-amzn-ErrorMessage,x-amzn-RequestId,x-amzn-ErrorType,x-amzn-Trace-id,refreshtoken,Date", "knowledgeBaseId": "T9PFUXGAPO", "status": "DELETING"}, "requestID": "9dfbaf92-e781-4837-ad53-d72e20be1ac2", "eventID": "bff5a344-3908-41f0-bb57-d57a01014ff3", "readOnly": false, "eventType": "AwsApiCall", "managementEvent": true, "recipientAccountId": "111111111", "eventCategory": "Management"}'