Implant Internal Image `T1525`

Tactic: Persistence

Adversaries may implant cloud or container images with malicious code to establish persistence after gaining access to an environment. Amazon Web Services (AWS) Amazon Machine Images (AMIs), Google Cloud Platform (GCP) Images, and Azure Images as well as popular container runtimes such as Docker can be implanted or backdoored. Unlike Upload Malware, this technique focuses on adversaries implanting an image in a registry within a victim’s environment. Depending on how the infrastructure is provisioned, this could provide persistent access if the infrastructure provisioning tool is instructed to always use the latest image.

Authoring guide

These 5 rules share fields, values, and exclusions.

Fields filtered most (10 distinct)

These fields appear most often in rule filters.

Field	Rules	How	Sample values
`aws::eventName`	3	`in` 2, `eq` 1	`AddPermission`, `BatchCheckLayerAvailability`, `BatchDeleteImage`, `BatchGetImage`, `CreateAlias`
`aws::eventSource`	3	`eq` 3	`ecr.amazonaws.com`, `ecs.amazonaws.com`, `lambda.amazonaws.com`
`EventType`	1	`in` 1	`createcustommodeldeployment`, `createmarketplacemodelendpoint`, `createmodelimportjob`
`Provider_Name`	1	`eq` 1	`bedrock.amazonaws.com`
`data_stream.dataset`	1	`eq` 1	`aws.cloudtrail`
`event.outcome`	1	`eq` 1	`success`
`namespace`	1	`in` 1	`gke-system`, `kube-node-lease`, `kube-public`
`requestParameters.containerDefinitions.command`	1	`contains` 1	`$aws_container_credentials_relative_uri`
`subresource`	1	`is_null` 1
`username`	1	`contains` 1	`serviceaccount`

Top indicator values (46 distinct)

These values appear most often in rule predicates.

Field	Kind	Value	Rules (here)	Corpus reach
`EventType`	`in`	`createcustommodeldeployment` elasticAWS Bedrock Untrusted Model Imported or Marketplace Endpoint Registered	1
`EventType`	`in`	`createmarketplacemodelendpoint` elasticAWS Bedrock Untrusted Model Imported or Marketplace Endpoint Registered	1
`EventType`	`in`	`createmodelimportjob` elasticAWS Bedrock Untrusted Model Imported or Marketplace Endpoint Registered	1
`EventType`	`in`	`registermarketplacemodelendpoint` elasticAWS Bedrock Untrusted Model Imported or Marketplace Endpoint Registered	1
`Provider_Name`	`eq`	`bedrock.amazonaws.com` elasticAWS Bedrock Untrusted Model Imported or Marketplace Endpoint Registered	1	16
`aws::eventName`	`eq`	`describetaskdefinition` sigmaAWS ECS Task Definition That Queries The Credential Endpoint	1
`aws::eventName`	`eq`	`registertaskdefinition` sigmaAWS ECS Task Definition That Queries The Credential Endpoint	1
`aws::eventName`	`eq`	`runtask` sigmaAWS ECS Task Definition That Queries The Credential Endpoint	1
`aws::eventName`	`in`	`AddPermission` pantherLambda CRUD Actions	1
`aws::eventName`	`in`	`BatchCheckLayerAvailability` pantherECR CRUD Actions	1
`aws::eventName`	`in`	`BatchDeleteImage` pantherECR CRUD Actions	1
`aws::eventName`	`in`	`BatchGetImage` pantherECR CRUD Actions	1
`aws::eventName`	`in`	`CompleteLayerUpload` pantherECR CRUD Actions	1
`aws::eventName`	`in`	`CreateAlias` pantherLambda CRUD Actions	1
`aws::eventName`	`in`	`CreateEventSourceMapping` pantherLambda CRUD Actions	1
`aws::eventName`	`in`	`CreateFunction` pantherLambda CRUD Actions	1
`aws::eventName`	`in`	`CreateRepository` pantherECR CRUD Actions	1
`aws::eventName`	`in`	`DeleteAlias` pantherLambda CRUD Actions	1
`aws::eventName`	`in`	`DeleteEventSourceMapping` pantherLambda CRUD Actions	1
`aws::eventName`	`in`	`DeleteFunction` pantherLambda CRUD Actions	1
`aws::eventName`	`in`	`DeleteRepository` pantherECR CRUD Actions	1
`aws::eventName`	`in`	`DeleteRepositoryPolicy` pantherECR CRUD Actions	1
`aws::eventName`	`in`	`GetAuthorizationToken` pantherECR CRUD Actions	1
`aws::eventName`	`in`	`GetDownloadUrlForLayer` pantherECR CRUD Actions	1
`aws::eventName`	`in`	`GetRepositoryPolicy` pantherECR CRUD Actions	1
`aws::eventName`	`in`	`InitiateLayerUpload` pantherECR CRUD Actions	1
`aws::eventName`	`in`	`PublishVersion` pantherLambda CRUD Actions	1
`aws::eventName`	`in`	`PutImage` pantherECR CRUD Actions	1
`aws::eventName`	`in`	`RemovePermission` pantherLambda CRUD Actions	1
`aws::eventName`	`in`	`SetRepositoryPolicy` pantherECR CRUD Actions	1

Exclusions (9 distinct)

These values appear most often in top-level exclusions.

Field	Kind	Value	Rules excluding
`aws::userIdentity.arn`	`ends_with`	`DeployRole` pantherECR CRUD Actions pantherLambda CRUD Actions	2
`resource`	`ne`	`pods` pantherKubernetes Pod Created in System Namespace	1
`responseStatus.code`	`ge`	`1` pantherKubernetes Pod Created in System Namespace	1
`responseStatus.code`	`ge`	`400` pantherKubernetes Pod Created in System Namespace	1
`responseStatus.code`	`le`	`16` pantherKubernetes Pod Created in System Namespace	1
`username`	`in`	`aksService` pantherKubernetes Pod Created in System Namespace	1
`username`	`in`	`masterclient` pantherKubernetes Pod Created in System Namespace	1
`username`	`starts_with`	`system:` pantherKubernetes Pod Created in System Namespace	1
`verb`	`ne`	`create` pantherKubernetes Pod Created in System Namespace	1

Rules under this technique

These vendors publish rules tagged with this technique.

Domain: Cloud

Sigma 1 rule

AWS ECS Task Definition That Queries The Credential Endpoint

Elastic 1 rule

AWS Bedrock Untrusted Model Imported or Marketplace Endpoint Registered

Implant Internal Image T1525