aws_cloudtrail_modifyimageattribute.yml

name: AWS CloudTrail ModifyImageAttribute
id: 667c2115-8082-419e-b541-8150066bda4d
version: 2
date: '2025-01-23'
author: Patrick Bareiss, Splunk
description: Logs an event when the attributes of an Amazon Machine Image (AMI) are
  modified.
mitre_components:
- Image Modification
- Image Metadata
source: aws_cloudtrail
sourcetype: aws:cloudtrail
separator: eventName
separator_value: ModifyImageAttribute
supported_TA:
- name: Splunk Add-on for AWS
  url: https://splunkbase.splunk.com/app/1876
  version: 7.9.1
fields:
- _time
- app
- awsRegion
- aws_account_id
- change_type
- command
- date_hour
- date_mday
- date_minute
- date_month
- date_second
- date_wday
- date_year
- date_zone
- dest
- dvc
- errorCode
- eventCategory
- eventID
- eventName
- eventSource
- eventTime
- eventType
- eventVersion
- host
- index
- linecount
- managementEvent
- msg
- object_category
- product
- punct
- readOnly
- recipientAccountId
- region
- requestID
- requestParameters.attributeType
- requestParameters.imageId
- requestParameters.launchPermission.add.items{}.userId
- responseElements._return
- responseElements.requestId
- sessionCredentialFromConsole
- signature
- source
- sourceIPAddress
- sourcetype
- splunk_server
- src
- src_ip
- start_time
- 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
example_log: '{"eventVersion": "1.08", "userIdentity": {"type": "AssumedRole", "principalId":
  "AROAYTOGP2RLDF6WP4HD6:bonobo@bo.com", "arn": "arn:aws:sts::111111111111:assumed-role/AWSReservedSSO_SPLKAdministratorAccess_d9ce1347d0a6dd3f/bonobo@bo.com",
  "accountId": "111111111111", "accessKeyId": "ASIAYTOGP2RLBHIEEEPN", "sessionContext":
  {"sessionIssuer": {"type": "Role", "principalId": "AROAYTOGP2RLDF6WP4HD6", "arn":
  "arn:aws:iam::111111111111:role/aws-reserved/sso.amazonaws.com/us-west-2/AWSReservedSSO_SPLKAdministratorAccess_d9ce1347d0a6dd3f",
  "accountId": "111111111111", "userName": "AWSReservedSSO_SPLKAdministratorAccess_d9ce1347d0a6dd3f"},
  "webIdFederationData": {}, "attributes": {"creationDate": "2023-03-23T19:27:44Z",
  "mfaAuthenticated": "false"}}}, "eventTime": "2023-03-23T21:47:28Z", "eventSource":
  "ec2.amazonaws.com", "eventName": "ModifyImageAttribute", "awsRegion": "us-west-2",
  "sourceIPAddress": "72.135.245.10", "userAgent": "AWS Internal", "requestParameters":
  {"imageId": "ami-06dac31db29508566", "launchPermission": {"add": {"items": [{"userId":
  "1111111111111111"}]}}, "attributeType": "launchPermission"}, "responseElements": {"requestId":
  "84c431ce-6268-4218-aaf8-b4cdc1cd4055", "_return": true}, "requestID": "84c431ce-6268-4218-aaf8-b4cdc1cd4055",
  "eventID": "957e1b12-ea17-4006-aefd-20677ace72b8", "readOnly": false, "eventType":
  "AwsApiCall", "managementEvent": true, "recipientAccountId": "111111111111", "eventCategory":
  "Management", "sessionCredentialFromConsole": "true"}'
output_fields:
- dest
- user
- user_agent
- src
- vendor_account
- vendor_region
- vendor_product