AWS ECR Events

Severity: informational
Group by: recipientAccountId
Log types: AWS.CloudTrail
Tags: AWS, Security Control, Configuration Required
Reference: https://aws.amazon.com/blogs/containers/amazon-ecr-in-multi-account-and-multi-region-architectures/
Source: github.com/panther-labs/panther-analysis

An ECR event occurred outside of an expected account or region

MITRE ATT&CK coverage

Tactic	Techniques
Stealth	`T1535` Unused/Unsupported Cloud Regions

Rule body yaml

AnalysisType: rule
Filename: aws_ecr_events.py
RuleID: "AWS.ECR.EVENTS"
DisplayName: "AWS ECR Events"
Enabled: false
LogTypes:
  - AWS.CloudTrail
Tags:
  - AWS
  - Security Control
  - Configuration Required
Reports:
  MITRE ATT&CK:
    - TA0005:T1535
Severity: Info
CreateAlert: false
Description: An ECR event occurred outside of an expected account or region
Runbook: https://docs.aws.amazon.com/AmazonECR/latest/userguide/logging-using-cloudtrail.html
Reference: https://aws.amazon.com/blogs/containers/amazon-ecr-in-multi-account-and-multi-region-architectures/
SummaryAttributes:
  - eventSource
  - recipientAccountId
  - awsRegion
  - p_any_aws_arns
Tests:
  - Name: Authorized account, unauthorized region
    ExpectedResult: true
    Log:
      {
        "eventVersion": "1.04",
        "userIdentity":
          {
            "type": "IAMUser",
            "principalId": "AIDACKCEVSQ6C2EXAMPLE:account_name",
            "arn": "arn:aws:sts::123456789012:user/Mary_Major",
            "accountId": "123456789012",
            "accessKeyId": "AKIAIOSFODNN7EXAMPLE",
            "userName": "Mary_Major",
            "sessionContext":
              {
                "attributes":
                  {
                    "mfaAuthenticated": "false",
                    "creationDate": "2019-04-15T16:42:14Z",
                  },
              },
          },
        "eventTime": "2019-04-15T16:45:00Z",
        "eventSource": "ecr.amazonaws.com",
        "eventName": "PutImage",
        "awsRegion": "us-east-2",
        "sourceIPAddress": "203.0.113.12",
        "userAgent": "console.amazonaws.com",
        "requestParameters":
          {
            "repositoryName": "testrepo",
            "imageTag": "latest",
            "registryId": "123456789012",
            "imageManifest": "{\n   \"schemaVersion\": 2,\n   \"mediaType\": \"application/vnd.docker.distribution.manifest.v2+json\",\n   \"config\": {\n      \"mediaType\": \"application/vnd.docker.container.image.v1+json\",\n      \"size\": 5543,\n      \"digest\": \"sha256:000b9b805af1cdb60628898c9f411996301a1c13afd3dbef1d8a16ac6dbf503a\"\n   },\n   \"layers\": [\n      {\n         \"mediaType\": \"application/vnd.docker.image.rootfs.diff.tar.gzip\",\n         \"size\": 43252507,\n         \"digest\": \"sha256:3b37166ec61459e76e33282dda08f2a9cd698ca7e3d6bc44e6a6e7580cdeff8e\"\n      },\n      {\n         \"mediaType\": \"application/vnd.docker.image.rootfs.diff.tar.gzip\",\n         \"size\": 846,\n         \"digest\": \"sha256:504facff238fde83f1ca8f9f54520b4219c5b8f80be9616ddc52d31448a044bd\"\n      },\n      {\n         \"mediaType\": \"application/vnd.docker.image.rootfs.diff.tar.gzip\",\n         \"size\": 615,\n         \"digest\": \"sha256:ebbcacd28e101968415b0c812b2d2dc60f969e36b0b08c073bf796e12b1bb449\"\n      },\n      {\n         \"mediaType\": \"application/vnd.docker.image.rootfs.diff.tar.gzip\",\n         \"size\": 850,\n         \"digest\": \"sha256:c7fb3351ecad291a88b92b600037e2435c84a347683d540042086fe72c902b8a\"\n      },\n      {\n         \"mediaType\": \"application/vnd.docker.image.rootfs.diff.tar.gzip\",\n         \"size\": 168,\n         \"digest\": \"sha256:2e3debadcbf7e542e2aefbce1b64a358b1931fb403b3e4aeca27cb4d809d56c2\"\n      },\n      {\n         \"mediaType\": \"application/vnd.docker.image.rootfs.diff.tar.gzip\",\n         \"size\": 37720774,\n         \"digest\": \"sha256:f8c9f51ad524d8ae9bf4db69cd3e720ba92373ec265f5c390ffb21bb0c277941\"\n      },\n      {\n         \"mediaType\": \"application/vnd.docker.image.rootfs.diff.tar.gzip\",\n         \"size\": 30432107,\n         \"digest\": \"sha256:813a50b13f61cf1f8d25f19fa96ad3aa5b552896c83e86ce413b48b091d7f01b\"\n      },\n      {\n         \"mediaType\": \"application/vnd.docker.image.rootfs.diff.tar.gzip\",\n         \"size\": 197,\n         \"digest\": \"sha256:7ab043301a6187ea3293d80b30ba06c7bf1a0c3cd4c43d10353b31bc0cecfe7d\"\n      },\n      {\n         \"mediaType\": \"application/vnd.docker.image.rootfs.diff.tar.gzip\",\n         \"size\": 154,\n         \"digest\": \"sha256:67012cca8f31dc3b8ee2305e7762fee20c250513effdedb38a1c37784a5a2e71\"\n      },\n      {\n         \"mediaType\": \"application/vnd.docker.image.rootfs.diff.tar.gzip\",\n         \"size\": 176,\n         \"digest\": \"sha256:3bc892145603fffc9b1c97c94e2985b4cb19ca508750b15845a5d97becbd1a0e\"\n      },\n      {\n         \"mediaType\": \"application/vnd.docker.image.rootfs.diff.tar.gzip\",\n         \"size\": 183,\n         \"digest\": \"sha256:6f1c79518f18251d35977e7e46bfa6c6b9cf50df2a79d4194941d95c54258d18\"\n      },\n      {\n         \"mediaType\": \"application/vnd.docker.image.rootfs.diff.tar.gzip\",\n         \"size\": 212,\n         \"digest\": \"sha256:b7bcfbc2e2888afebede4dd1cd5eebf029bb6315feeaf0b56e425e11a50afe42\"\n      },\n      {\n         \"mediaType\": \"application/vnd.docker.image.rootfs.diff.tar.gzip\",\n         \"size\": 212,\n         \"digest\": \"sha256:2b220f8b0f32b7c2ed8eaafe1c802633bbd94849b9ab73926f0ba46cdae91629\"\n      }\n   ]\n}",
          },
        "responseElements":
          {
            "image":
              {
                "repositoryName": "testrepo",
                "imageManifest": "{\n   \"schemaVersion\": 2,\n   \"mediaType\": \"application/vnd.docker.distribution.manifest.v2+json\",\n   \"config\": {\n      \"mediaType\": \"application/vnd.docker.container.image.v1+json\",\n      \"size\": 5543,\n      \"digest\": \"sha256:000b9b805af1cdb60628898c9f411996301a1c13afd3dbef1d8a16ac6dbf503a\"\n   },\n   \"layers\": [\n      {\n         \"mediaType\": \"application/vnd.docker.image.rootfs.diff.tar.gzip\",\n         \"size\": 43252507,\n         \"digest\": \"sha256:3b37166ec61459e76e33282dda08f2a9cd698ca7e3d6bc44e6a6e7580cdeff8e\"\n      },\n      {\n         \"mediaType\": \"application/vnd.docker.image.rootfs.diff.tar.gzip\",\n         \"size\": 846,\n         \"digest\": \"sha256:504facff238fde83f1ca8f9f54520b4219c5b8f80be9616ddc52d31448a044bd\"\n      },\n      {\n         \"mediaType\": \"application/vnd.docker.image.rootfs.diff.tar.gzip\",\n         \"size\": 615,\n         \"digest\": \"sha256:ebbcacd28e101968415b0c812b2d2dc60f969e36b0b08c073bf796e12b1bb449\"\n      },\n      {\n         \"mediaType\": \"application/vnd.docker.image.rootfs.diff.tar.gzip\",\n         \"size\": 850,\n         \"digest\": \"sha256:c7fb3351ecad291a88b92b600037e2435c84a347683d540042086fe72c902b8a\"\n      },\n      {\n         \"mediaType\": \"application/vnd.docker.image.rootfs.diff.tar.gzip\",\n         \"size\": 168,\n         \"digest\": \"sha256:2e3debadcbf7e542e2aefbce1b64a358b1931fb403b3e4aeca27cb4d809d56c2\"\n      },\n      {\n         \"mediaType\": \"application/vnd.docker.image.rootfs.diff.tar.gzip\",\n         \"size\": 37720774,\n         \"digest\": \"sha256:f8c9f51ad524d8ae9bf4db69cd3e720ba92373ec265f5c390ffb21bb0c277941\"\n      },\n      {\n         \"mediaType\": \"application/vnd.docker.image.rootfs.diff.tar.gzip\",\n         \"size\": 30432107,\n         \"digest\": \"sha256:813a50b13f61cf1f8d25f19fa96ad3aa5b552896c83e86ce413b48b091d7f01b\"\n      },\n      {\n         \"mediaType\": \"application/vnd.docker.image.rootfs.diff.tar.gzip\",\n         \"size\": 197,\n         \"digest\": \"sha256:7ab043301a6187ea3293d80b30ba06c7bf1a0c3cd4c43d10353b31bc0cecfe7d\"\n      },\n      {\n         \"mediaType\": \"application/vnd.docker.image.rootfs.diff.tar.gzip\",\n         \"size\": 154,\n         \"digest\": \"sha256:67012cca8f31dc3b8ee2305e7762fee20c250513effdedb38a1c37784a5a2e71\"\n      },\n      {\n         \"mediaType\": \"application/vnd.docker.image.rootfs.diff.tar.gzip\",\n         \"size\": 176,\n         \"digest\": \"sha256:3bc892145603fffc9b1c97c94e2985b4cb19ca508750b15845a5d97becbd1a0e\"\n      },\n      {\n         \"mediaType\": \"application/vnd.docker.image.rootfs.diff.tar.gzip\",\n         \"size\": 183,\n         \"digest\": \"sha256:6f1c79518f18251d35977e7e46bfa6c6b9cf50df2a79d4194941d95c54258d18\"\n      },\n      {\n         \"mediaType\": \"application/vnd.docker.image.rootfs.diff.tar.gzip\",\n         \"size\": 212,\n         \"digest\": \"sha256:b7bcfbc2e2888afebede4dd1cd5eebf029bb6315feeaf0b56e425e11a50afe42\"\n      },\n      {\n         \"mediaType\": \"application/vnd.docker.image.rootfs.diff.tar.gzip\",\n         \"size\": 212,\n         \"digest\": \"sha256:2b220f8b0f32b7c2ed8eaafe1c802633bbd94849b9ab73926f0ba46cdae91629\"\n      }\n   ]\n}",
                "registryId": "123456789012",
                "imageId":
                  {
                    "imageDigest": "sha256:98c8b060c21d9adbb6b8c41b916e95e6307102786973ab93a41e8b86d1fc6d3e",
                    "imageTag": "latest",
                  },
              },
          },
        "requestID": "cf044b7d-5f9d-11e9-9b2a-95983139cc57",
        "eventID": "2bfd4ee2-2178-4a82-a27d-b12939923f0f",
        "resources":
          [
            {
              "ARN": "arn:aws:ecr:us-east-2:123456789012:repository/testrepo",
              "accountId": "123456789012",
            },
          ],
        "eventType": "AwsApiCall",
        "recipientAccountId": "123456789012",
      }
  - Name: Unauthorized account
    ExpectedResult: true
    Log:
      {
        "eventVersion": "1.04",
        "userIdentity":
          {
            "type": "IAMUser",
            "principalId": "AIDACKCEVSQ6C2EXAMPLE:account_name",
            "arn": "arn:aws:sts::123456789000:user/Mary_Major",
            "accountId": "123456789000",
            "accessKeyId": "AKIAIOSFODNN7EXAMPLE",
            "userName": "Mary_Major",
            "sessionContext":
              {
                "attributes":
                  {
                    "mfaAuthenticated": "false",
                    "creationDate": "2019-04-15T16:42:14Z",
                  },
              },
          },
        "eventTime": "2019-04-15T16:45:00Z",
        "eventSource": "ecr.amazonaws.com",
        "eventName": "PutImage",
        "awsRegion": "us-east-2",
        "sourceIPAddress": "203.0.113.12",
        "userAgent": "console.amazonaws.com",
        "requestParameters":
          {
            "repositoryName": "testrepo",
            "imageTag": "latest",
            "registryId": "123456789000",
            "imageManifest": "{\n   \"schemaVersion\": 2,\n   \"mediaType\": \"application/vnd.docker.distribution.manifest.v2+json\",\n   \"config\": {\n      \"mediaType\": \"application/vnd.docker.container.image.v1+json\",\n      \"size\": 5543,\n      \"digest\": \"sha256:000b9b805af1cdb60628898c9f411996301a1c13afd3dbef1d8a16ac6dbf503a\"\n   },\n   \"layers\": [\n      {\n         \"mediaType\": \"application/vnd.docker.image.rootfs.diff.tar.gzip\",\n         \"size\": 43252507,\n         \"digest\": \"sha256:3b37166ec61459e76e33282dda08f2a9cd698ca7e3d6bc44e6a6e7580cdeff8e\"\n      },\n      {\n         \"mediaType\": \"application/vnd.docker.image.rootfs.diff.tar.gzip\",\n         \"size\": 846,\n         \"digest\": \"sha256:504facff238fde83f1ca8f9f54520b4219c5b8f80be9616ddc52d31448a044bd\"\n      },\n      {\n         \"mediaType\": \"application/vnd.docker.image.rootfs.diff.tar.gzip\",\n         \"size\": 615,\n         \"digest\": \"sha256:ebbcacd28e101968415b0c812b2d2dc60f969e36b0b08c073bf796e12b1bb449\"\n      },\n      {\n         \"mediaType\": \"application/vnd.docker.image.rootfs.diff.tar.gzip\",\n         \"size\": 850,\n         \"digest\": \"sha256:c7fb3351ecad291a88b92b600037e2435c84a347683d540042086fe72c902b8a\"\n      },\n      {\n         \"mediaType\": \"application/vnd.docker.image.rootfs.diff.tar.gzip\",\n         \"size\": 168,\n         \"digest\": \"sha256:2e3debadcbf7e542e2aefbce1b64a358b1931fb403b3e4aeca27cb4d809d56c2\"\n      },\n      {\n         \"mediaType\": \"application/vnd.docker.image.rootfs.diff.tar.gzip\",\n         \"size\": 37720774,\n         \"digest\": \"sha256:f8c9f51ad524d8ae9bf4db69cd3e720ba92373ec265f5c390ffb21bb0c277941\"\n      },\n      {\n         \"mediaType\": \"application/vnd.docker.image.rootfs.diff.tar.gzip\",\n         \"size\": 30432107,\n         \"digest\": \"sha256:813a50b13f61cf1f8d25f19fa96ad3aa5b552896c83e86ce413b48b091d7f01b\"\n      },\n      {\n         \"mediaType\": \"application/vnd.docker.image.rootfs.diff.tar.gzip\",\n         \"size\": 197,\n         \"digest\": \"sha256:7ab043301a6187ea3293d80b30ba06c7bf1a0c3cd4c43d10353b31bc0cecfe7d\"\n      },\n      {\n         \"mediaType\": \"application/vnd.docker.image.rootfs.diff.tar.gzip\",\n         \"size\": 154,\n         \"digest\": \"sha256:67012cca8f31dc3b8ee2305e7762fee20c250513effdedb38a1c37784a5a2e71\"\n      },\n      {\n         \"mediaType\": \"application/vnd.docker.image.rootfs.diff.tar.gzip\",\n         \"size\": 176,\n         \"digest\": \"sha256:3bc892145603fffc9b1c97c94e2985b4cb19ca508750b15845a5d97becbd1a0e\"\n      },\n      {\n         \"mediaType\": \"application/vnd.docker.image.rootfs.diff.tar.gzip\",\n         \"size\": 183,\n         \"digest\": \"sha256:6f1c79518f18251d35977e7e46bfa6c6b9cf50df2a79d4194941d95c54258d18\"\n      },\n      {\n         \"mediaType\": \"application/vnd.docker.image.rootfs.diff.tar.gzip\",\n         \"size\": 212,\n         \"digest\": \"sha256:b7bcfbc2e2888afebede4dd1cd5eebf029bb6315feeaf0b56e425e11a50afe42\"\n      },\n      {\n         \"mediaType\": \"application/vnd.docker.image.rootfs.diff.tar.gzip\",\n         \"size\": 212,\n         \"digest\": \"sha256:2b220f8b0f32b7c2ed8eaafe1c802633bbd94849b9ab73926f0ba46cdae91629\"\n      }\n   ]\n}",
          },
        "responseElements":
          {
            "image":
              {
                "repositoryName": "testrepo",
                "imageManifest": "{\n   \"schemaVersion\": 2,\n   \"mediaType\": \"application/vnd.docker.distribution.manifest.v2+json\",\n   \"config\": {\n      \"mediaType\": \"application/vnd.docker.container.image.v1+json\",\n      \"size\": 5543,\n      \"digest\": \"sha256:000b9b805af1cdb60628898c9f411996301a1c13afd3dbef1d8a16ac6dbf503a\"\n   },\n   \"layers\": [\n      {\n         \"mediaType\": \"application/vnd.docker.image.rootfs.diff.tar.gzip\",\n         \"size\": 43252507,\n         \"digest\": \"sha256:3b37166ec61459e76e33282dda08f2a9cd698ca7e3d6bc44e6a6e7580cdeff8e\"\n      },\n      {\n         \"mediaType\": \"application/vnd.docker.image.rootfs.diff.tar.gzip\",\n         \"size\": 846,\n         \"digest\": \"sha256:504facff238fde83f1ca8f9f54520b4219c5b8f80be9616ddc52d31448a044bd\"\n      },\n      {\n         \"mediaType\": \"application/vnd.docker.image.rootfs.diff.tar.gzip\",\n         \"size\": 615,\n         \"digest\": \"sha256:ebbcacd28e101968415b0c812b2d2dc60f969e36b0b08c073bf796e12b1bb449\"\n      },\n      {\n         \"mediaType\": \"application/vnd.docker.image.rootfs.diff.tar.gzip\",\n         \"size\": 850,\n         \"digest\": \"sha256:c7fb3351ecad291a88b92b600037e2435c84a347683d540042086fe72c902b8a\"\n      },\n      {\n         \"mediaType\": \"application/vnd.docker.image.rootfs.diff.tar.gzip\",\n         \"size\": 168,\n         \"digest\": \"sha256:2e3debadcbf7e542e2aefbce1b64a358b1931fb403b3e4aeca27cb4d809d56c2\"\n      },\n      {\n         \"mediaType\": \"application/vnd.docker.image.rootfs.diff.tar.gzip\",\n         \"size\": 37720774,\n         \"digest\": \"sha256:f8c9f51ad524d8ae9bf4db69cd3e720ba92373ec265f5c390ffb21bb0c277941\"\n      },\n      {\n         \"mediaType\": \"application/vnd.docker.image.rootfs.diff.tar.gzip\",\n         \"size\": 30432107,\n         \"digest\": \"sha256:813a50b13f61cf1f8d25f19fa96ad3aa5b552896c83e86ce413b48b091d7f01b\"\n      },\n      {\n         \"mediaType\": \"application/vnd.docker.image.rootfs.diff.tar.gzip\",\n         \"size\": 197,\n         \"digest\": \"sha256:7ab043301a6187ea3293d80b30ba06c7bf1a0c3cd4c43d10353b31bc0cecfe7d\"\n      },\n      {\n         \"mediaType\": \"application/vnd.docker.image.rootfs.diff.tar.gzip\",\n         \"size\": 154,\n         \"digest\": \"sha256:67012cca8f31dc3b8ee2305e7762fee20c250513effdedb38a1c37784a5a2e71\"\n      },\n      {\n         \"mediaType\": \"application/vnd.docker.image.rootfs.diff.tar.gzip\",\n         \"size\": 176,\n         \"digest\": \"sha256:3bc892145603fffc9b1c97c94e2985b4cb19ca508750b15845a5d97becbd1a0e\"\n      },\n      {\n         \"mediaType\": \"application/vnd.docker.image.rootfs.diff.tar.gzip\",\n         \"size\": 183,\n         \"digest\": \"sha256:6f1c79518f18251d35977e7e46bfa6c6b9cf50df2a79d4194941d95c54258d18\"\n      },\n      {\n         \"mediaType\": \"application/vnd.docker.image.rootfs.diff.tar.gzip\",\n         \"size\": 212,\n         \"digest\": \"sha256:b7bcfbc2e2888afebede4dd1cd5eebf029bb6315feeaf0b56e425e11a50afe42\"\n      },\n      {\n         \"mediaType\": \"application/vnd.docker.image.rootfs.diff.tar.gzip\",\n         \"size\": 212,\n         \"digest\": \"sha256:2b220f8b0f32b7c2ed8eaafe1c802633bbd94849b9ab73926f0ba46cdae91629\"\n      }\n   ]\n}",
                "registryId": "123456789000",
                "imageId":
                  {
                    "imageDigest": "sha256:98c8b060c21d9adbb6b8c41b916e95e6307102786973ab93a41e8b86d1fc6d3e",
                    "imageTag": "latest",
                  },
              },
          },
        "requestID": "cf044b7d-5f9d-11e9-9b2a-95983139cc57",
        "eventID": "2bfd4ee2-2178-4a82-a27d-b12939923f0f",
        "resources":
          [
            {
              "ARN": "arn:aws:ecr:us-east-2:123456789000:repository/testrepo",
              "accountId": "123456789000",
            },
          ],
        "eventType": "AwsApiCall",
        "recipientAccountId": "123456789000",
      }
  - Name: Authorized account
    ExpectedResult: false
    Log:
      {
        "eventVersion": "1.04",
        "userIdentity":
          {
            "type": "IAMUser",
            "principalId": "AIDACKCEVSQ6C2EXAMPLE:account_name",
            "arn": "arn:aws:sts::123456789012:user/Mary_Major",
            "accountId": "123456789012",
            "accessKeyId": "AKIAIOSFODNN7EXAMPLE",
            "userName": "Mary_Major",
            "sessionContext":
              {
                "attributes":
                  {
                    "mfaAuthenticated": "false",
                    "creationDate": "2019-04-15T16:42:14Z",
                  },
              },
          },
        "eventTime": "2019-04-15T16:45:00Z",
        "eventSource": "ecr.amazonaws.com",
        "eventName": "PutImage",
        "awsRegion": "us-west-2",
        "sourceIPAddress": "203.0.113.12",
        "userAgent": "console.amazonaws.com",
        "requestParameters":
          {
            "repositoryName": "testrepo",
            "imageTag": "latest",
            "registryId": "123456789012",
            "imageManifest": "{\n   \"schemaVersion\": 2,\n   \"mediaType\": \"application/vnd.docker.distribution.manifest.v2+json\",\n   \"config\": {\n      \"mediaType\": \"application/vnd.docker.container.image.v1+json\",\n      \"size\": 5543,\n      \"digest\": \"sha256:000b9b805af1cdb60628898c9f411996301a1c13afd3dbef1d8a16ac6dbf503a\"\n   },\n   \"layers\": [\n      {\n         \"mediaType\": \"application/vnd.docker.image.rootfs.diff.tar.gzip\",\n         \"size\": 43252507,\n         \"digest\": \"sha256:3b37166ec61459e76e33282dda08f2a9cd698ca7e3d6bc44e6a6e7580cdeff8e\"\n      },\n      {\n         \"mediaType\": \"application/vnd.docker.image.rootfs.diff.tar.gzip\",\n         \"size\": 846,\n         \"digest\": \"sha256:504facff238fde83f1ca8f9f54520b4219c5b8f80be9616ddc52d31448a044bd\"\n      },\n      {\n         \"mediaType\": \"application/vnd.docker.image.rootfs.diff.tar.gzip\",\n         \"size\": 615,\n         \"digest\": \"sha256:ebbcacd28e101968415b0c812b2d2dc60f969e36b0b08c073bf796e12b1bb449\"\n      },\n      {\n         \"mediaType\": \"application/vnd.docker.image.rootfs.diff.tar.gzip\",\n         \"size\": 850,\n         \"digest\": \"sha256:c7fb3351ecad291a88b92b600037e2435c84a347683d540042086fe72c902b8a\"\n      },\n      {\n         \"mediaType\": \"application/vnd.docker.image.rootfs.diff.tar.gzip\",\n         \"size\": 168,\n         \"digest\": \"sha256:2e3debadcbf7e542e2aefbce1b64a358b1931fb403b3e4aeca27cb4d809d56c2\"\n      },\n      {\n         \"mediaType\": \"application/vnd.docker.image.rootfs.diff.tar.gzip\",\n         \"size\": 37720774,\n         \"digest\": \"sha256:f8c9f51ad524d8ae9bf4db69cd3e720ba92373ec265f5c390ffb21bb0c277941\"\n      },\n      {\n         \"mediaType\": \"application/vnd.docker.image.rootfs.diff.tar.gzip\",\n         \"size\": 30432107,\n         \"digest\": \"sha256:813a50b13f61cf1f8d25f19fa96ad3aa5b552896c83e86ce413b48b091d7f01b\"\n      },\n      {\n         \"mediaType\": \"application/vnd.docker.image.rootfs.diff.tar.gzip\",\n         \"size\": 197,\n         \"digest\": \"sha256:7ab043301a6187ea3293d80b30ba06c7bf1a0c3cd4c43d10353b31bc0cecfe7d\"\n      },\n      {\n         \"mediaType\": \"application/vnd.docker.image.rootfs.diff.tar.gzip\",\n         \"size\": 154,\n         \"digest\": \"sha256:67012cca8f31dc3b8ee2305e7762fee20c250513effdedb38a1c37784a5a2e71\"\n      },\n      {\n         \"mediaType\": \"application/vnd.docker.image.rootfs.diff.tar.gzip\",\n         \"size\": 176,\n         \"digest\": \"sha256:3bc892145603fffc9b1c97c94e2985b4cb19ca508750b15845a5d97becbd1a0e\"\n      },\n      {\n         \"mediaType\": \"application/vnd.docker.image.rootfs.diff.tar.gzip\",\n         \"size\": 183,\n         \"digest\": \"sha256:6f1c79518f18251d35977e7e46bfa6c6b9cf50df2a79d4194941d95c54258d18\"\n      },\n      {\n         \"mediaType\": \"application/vnd.docker.image.rootfs.diff.tar.gzip\",\n         \"size\": 212,\n         \"digest\": \"sha256:b7bcfbc2e2888afebede4dd1cd5eebf029bb6315feeaf0b56e425e11a50afe42\"\n      },\n      {\n         \"mediaType\": \"application/vnd.docker.image.rootfs.diff.tar.gzip\",\n         \"size\": 212,\n         \"digest\": \"sha256:2b220f8b0f32b7c2ed8eaafe1c802633bbd94849b9ab73926f0ba46cdae91629\"\n      }\n   ]\n}",
          },
        "responseElements":
          {
            "image":
              {
                "repositoryName": "testrepo",
                "imageManifest": "{\n   \"schemaVersion\": 2,\n   \"mediaType\": \"application/vnd.docker.distribution.manifest.v2+json\",\n   \"config\": {\n      \"mediaType\": \"application/vnd.docker.container.image.v1+json\",\n      \"size\": 5543,\n      \"digest\": \"sha256:000b9b805af1cdb60628898c9f411996301a1c13afd3dbef1d8a16ac6dbf503a\"\n   },\n   \"layers\": [\n      {\n         \"mediaType\": \"application/vnd.docker.image.rootfs.diff.tar.gzip\",\n         \"size\": 43252507,\n         \"digest\": \"sha256:3b37166ec61459e76e33282dda08f2a9cd698ca7e3d6bc44e6a6e7580cdeff8e\"\n      },\n      {\n         \"mediaType\": \"application/vnd.docker.image.rootfs.diff.tar.gzip\",\n         \"size\": 846,\n         \"digest\": \"sha256:504facff238fde83f1ca8f9f54520b4219c5b8f80be9616ddc52d31448a044bd\"\n      },\n      {\n         \"mediaType\": \"application/vnd.docker.image.rootfs.diff.tar.gzip\",\n         \"size\": 615,\n         \"digest\": \"sha256:ebbcacd28e101968415b0c812b2d2dc60f969e36b0b08c073bf796e12b1bb449\"\n      },\n      {\n         \"mediaType\": \"application/vnd.docker.image.rootfs.diff.tar.gzip\",\n         \"size\": 850,\n         \"digest\": \"sha256:c7fb3351ecad291a88b92b600037e2435c84a347683d540042086fe72c902b8a\"\n      },\n      {\n         \"mediaType\": \"application/vnd.docker.image.rootfs.diff.tar.gzip\",\n         \"size\": 168,\n         \"digest\": \"sha256:2e3debadcbf7e542e2aefbce1b64a358b1931fb403b3e4aeca27cb4d809d56c2\"\n      },\n      {\n         \"mediaType\": \"application/vnd.docker.image.rootfs.diff.tar.gzip\",\n         \"size\": 37720774,\n         \"digest\": \"sha256:f8c9f51ad524d8ae9bf4db69cd3e720ba92373ec265f5c390ffb21bb0c277941\"\n      },\n      {\n         \"mediaType\": \"application/vnd.docker.image.rootfs.diff.tar.gzip\",\n         \"size\": 30432107,\n         \"digest\": \"sha256:813a50b13f61cf1f8d25f19fa96ad3aa5b552896c83e86ce413b48b091d7f01b\"\n      },\n      {\n         \"mediaType\": \"application/vnd.docker.image.rootfs.diff.tar.gzip\",\n         \"size\": 197,\n         \"digest\": \"sha256:7ab043301a6187ea3293d80b30ba06c7bf1a0c3cd4c43d10353b31bc0cecfe7d\"\n      },\n      {\n         \"mediaType\": \"application/vnd.docker.image.rootfs.diff.tar.gzip\",\n         \"size\": 154,\n         \"digest\": \"sha256:67012cca8f31dc3b8ee2305e7762fee20c250513effdedb38a1c37784a5a2e71\"\n      },\n      {\n         \"mediaType\": \"application/vnd.docker.image.rootfs.diff.tar.gzip\",\n         \"size\": 176,\n         \"digest\": \"sha256:3bc892145603fffc9b1c97c94e2985b4cb19ca508750b15845a5d97becbd1a0e\"\n      },\n      {\n         \"mediaType\": \"application/vnd.docker.image.rootfs.diff.tar.gzip\",\n         \"size\": 183,\n         \"digest\": \"sha256:6f1c79518f18251d35977e7e46bfa6c6b9cf50df2a79d4194941d95c54258d18\"\n      },\n      {\n         \"mediaType\": \"application/vnd.docker.image.rootfs.diff.tar.gzip\",\n         \"size\": 212,\n         \"digest\": \"sha256:b7bcfbc2e2888afebede4dd1cd5eebf029bb6315feeaf0b56e425e11a50afe42\"\n      },\n      {\n         \"mediaType\": \"application/vnd.docker.image.rootfs.diff.tar.gzip\",\n         \"size\": 212,\n         \"digest\": \"sha256:2b220f8b0f32b7c2ed8eaafe1c802633bbd94849b9ab73926f0ba46cdae91629\"\n      }\n   ]\n}",
                "registryId": "123456789012",
                "imageId":
                  {
                    "imageDigest": "sha256:98c8b060c21d9adbb6b8c41b916e95e6307102786973ab93a41e8b86d1fc6d3e",
                    "imageTag": "latest",
                  },
              },
          },
        "requestID": "cf044b7d-5f9d-11e9-9b2a-95983139cc57",
        "eventID": "2bfd4ee2-2178-4a82-a27d-b12939923f0f",
        "resources":
          [
            {
              "ARN": "arn:aws:ecr:us-east-2:123456789012:repository/testrepo",
              "accountId": "123456789012",
            },
          ],
        "eventType": "AwsApiCall",
        "recipientAccountId": "123456789012",
      }

Detection logic

Condition

eventSource eq "ecr.amazonaws.com"

This rule also runs imperative logic the parser cannot express as a filter; the conditions above are the structured part it could extract.

Indicators

Each row is a field, operator, and value that the rule matches. The corpus column counts how many other rules in the catalog look for the same combination: high numbers point to widely-used, community-vetted indicators. Blank or 1 shows that the indicator is specific to this rule.

Field	Kind	Values
`eventSource`	eq	`ecr.amazonaws.com`

Output fields

Fields the rule emits when it matches. Chronicle authors list these in the outcome block; they appear on the detection and $risk_score drives alerting. Sentinel / Defender XDR rules build them up through project / summarize / extend stages. Sentinel maps these into alert fields via entityMappings and customDetails; Defender XDR custom detections surface them as alert fields directly.

Field
`eventName`
`eventSource`
`awsRegion`
`recipientAccountId`
`sourceIPAddress`
`userAgent`
`userIdentity`

`j` / `k`	Scroll down / up
`d` / `u`	Half-page down / up
`gg` / `G`	Top / bottom
`h` / `l`	History back / forward
`f`	Follow link (`Shift` = new tab)
`/`	Focus search
`?`	Toggle this help
`↑` / `↓`	Navigate search results
`Enter`	Open highlighted result
`Esc`	Close results / dialog

`type:`	`events` / `rules` / `providers`
`vendor:`	`sigma` / `elastic` / `splunk` / `kusto` / `chronicle` (vendor name alone also works: `sigma:`, `kql:`, `secops:`…)
`tactic:`	TA-id, slug, or name: `credential_access`, `TA0006`
`technique:`	technique or sub-technique ID: `T1003`, `T1003.001` (alias `tech:`)
`severity:`	`critical` / `high` / `medium` / `low` / `informational` (alias `sev:`)
`risk_score`	Numeric comparison on the Elastic risk score (0 to 100): `risk_score>50`, `risk_score<=20`, `risk_score=99` (alias `risk`; Elastic rules only)
`stages:`	Rules with exactly N pipeline stages
`correlation:`	`single_event` / `sequence` / `alternatives` / `alternatives_cross_log` / `all_required` / `correlated`
`with:`	Co-occurrence event-id; stacks (`with:4624 with:4769`) to require all, while a comma list in one occurrence (`with:4624,4769`) is an either-or group. Implies multi-event
`like:`	Structural neighbors of a rule slug (equivalents + subsumption stricter / broader): `like:comsvcs_lsass_memory_dump-splunk-sysmon`
`groupby:`	Entity-grouping substring match against `group_by_keys`: `groupby:user`, `groupby:host`
`uses:`	Rules whose predicate tree touches the field (any kind, any value): `uses:CommandLine`
`excludes:`	Rules with top-level `not()` clauses on the field (FP whitelists): `excludes:ParentImage`
`field:` / `value:`	Predicate search; narrows rule cards to those with a matching leaf and drives the indicator tier. Unquoted = substring, wildcards allowed (`value:mimikatz`)
`indicator:`	Shorthand for `field:F value:V`: `indicator:Image=*\powershell.exe`
`kind:`	Filter by predicate kind. Narrows rule cards to those carrying a matching predicate leaf (`vendor:elastic kind:cidr_match`) and drives the indicator tier: `contains` / `starts_with` / `ends_with` / `regex` / `cidr` / `eq` / `in` … (operator aliases `op:`/`match:`)
`has:` / `no:`	`sample`, `field`, `notes`, `refs`, `trace`, `thirdparty`, `rule`, `pattern`, `timewindow`, `threshold`, `newterms`, `sigma`/`elastic`/`splunk`/`kusto`/`chronicle`
`-op:val`	Exclude matches; works on most operators but not `type:`/`like:`/`has:`/`no:` (use `no:<flag>` to exclude a rule flag): `tactic:execution -vendor:splunk`. Standalone `-kind:`/`-field:`/`-value:` drop every rule carrying a matching predicate leaf (`type:rules -kind:is_null`)
`field:"…"` / `value:"…"`	Quoted value = anchored exact match (also allows spaces): `value:"net user"`
`a,b`	Comma = OR inside one operator (`vendor:sigma,elastic`, `severity:high,critical`); repeating a facet merges the same way. `field:`/`value:` never split (literal commas)
`vendors:` / `stage:`	Singular and plural spellings fold to the canonical operator and value: `tactics:` = `tactic:`, `type:event` = `type:events`, `correlation:sequences` = `correlation:sequence`, `has:thresholds` = `has:threshold`
`"quoted phrase"`	Exact-match a multi-word phrase (free text)