Amazon Elastic Container Registry (ECR) AWS-ecr

3 operations, identified by eventName in the audit log.

eventName	Description
_catch_all	Catch-all entry for AWS-ecr rules that match the service but not a specific eventName.
DescribeImageScanFindings	Returns vulnerability scan findings for a specified container image in an ECR repository.
PutImage	Creates or updates the image manifest and tags associated with an image in an ECR repository.

_catch_all: AWS-ecr (catch-all)

Service: AWS-ecr

Description

Catch-all entry for AWS-ecr rules that match the service but not a specific eventName.

Fields #

Name	Description
`eventName`	The name of the API action that was called.
`eventSource`	The AWS service endpoint that received the request (e.g. iam.amazonaws.com).
`eventType`	CloudTrail event category: AwsApiCall, AwsConsoleSignIn, AwsConsoleAction, AwsServiceEvent, or AwsVpceEvents.
`userIdentity`	The IAM entity that made the request (type, principalId, arn, accountId, sessionContext).
`sourceIPAddress`	IP address of the caller, or the AWS service principal for service-initiated calls.
`awsRegion`	AWS Region the request was made to.
`requestParameters`	Parameters sent with the request. Shape is action-specific; null when none.
`responseElements`	Response elements. Shape is action-specific; null for reads or when absent.
`errorCode`	AWS service error code when the request failed. Absent on success.
`errorMessage`	Description of the error when errorCode is present.

DescribeImageScanFindings

Service: AWS-ecr

Description

Returns vulnerability scan findings for a specified container image in an ECR repository.

Fields #

Name	Description
`eventName`	The name of the API action that was called.
`eventSource`	The AWS service endpoint that received the request (e.g. iam.amazonaws.com).
`eventType`	CloudTrail event category: AwsApiCall, AwsConsoleSignIn, AwsConsoleAction, AwsServiceEvent, or AwsVpceEvents.
`userIdentity`	The IAM entity that made the request (type, principalId, arn, accountId, sessionContext).
`sourceIPAddress`	IP address of the caller, or the AWS service principal for service-initiated calls.
`awsRegion`	AWS Region the request was made to.
`requestParameters`	Parameters sent with the request. Shape is action-specific; null when none.
`responseElements`	Response elements. Shape is action-specific; null for reads or when absent.
`errorCode`	AWS service error code when the request failed. Absent on success.
`errorMessage`	Description of the error when errorCode is present.

Common Indicators #

Field/value combinations most frequently checked by detection rules targeting this event, derived from cross-vendor predicate analysis.

Field	Kind	Value	Rules	Vendors
`aws::eventName`	eq	`DescribeImageScanFindings`	3 rules	kusto, splunk
`aws::eventSource`	eq	`ecr.amazonaws.com`	3 rules	panther, splunk

Detection Rules #

View all rules referencing this event →

Splunk #

AWS ECR Container Scanning Findings High source: The following analytic identifies high-severity findings from AWS Elastic Container Registry (ECR) image scans. It detects these activities by analyzing AWS CloudTrail logs for the DescribeImageScanFindings event, specifically filtering…
AWS ECR Container Scanning Findings Low Informational Unknown source: The following analytic identifies low, informational, or unknown severity findings from AWS Elastic Container Registry (ECR) image scans. It leverages AWS CloudTrail logs, specifically the DescribeImageScanFindings event, to detect these…
AWS ECR Container Scanning Findings Medium source: The following analytic identifies medium-severity findings from AWS Elastic Container Registry (ECR) image scans. It leverages AWS CloudTrail logs, specifically the DescribeImageScanFindings event, to detect vulnerabilities in container…

PutImage

Service: AWS-ecr

Description

Creates or updates the image manifest and tags associated with an image in an ECR repository.

Fields #

Name	Description
`eventName`	The name of the API action that was called.
`eventSource`	The AWS service endpoint that received the request (e.g. iam.amazonaws.com).
`eventType`	CloudTrail event category: AwsApiCall, AwsConsoleSignIn, AwsConsoleAction, AwsServiceEvent, or AwsVpceEvents.
`userIdentity`	The IAM entity that made the request (type, principalId, arn, accountId, sessionContext).
`sourceIPAddress`	IP address of the caller, or the AWS service principal for service-initiated calls.
`awsRegion`	AWS Region the request was made to.
`requestParameters`	Parameters sent with the request. Shape is action-specific; null when none.
`responseElements`	Response elements. Shape is action-specific; null for reads or when absent.
`errorCode`	AWS service error code when the request failed. Absent on success.
`errorMessage`	Description of the error when errorCode is present.

Common Indicators #

Field/value combinations most frequently checked by detection rules targeting this event, derived from cross-vendor predicate analysis.

Field	Kind	Value	Rules	Vendors
`aws::eventName`	eq	`PutImage`	2 rules	splunk
`aws::eventSource`	eq	`ecr.amazonaws.com`	2 rules	panther, splunk

Detection Rules #

View all rules referencing this event →

Splunk #

AWS ECR Container Upload Outside Business Hours source: The following analytic detects the upload of a new container image to AWS Elastic Container Registry (ECR) outside of standard business hours. It leverages AWS CloudTrail logs to identify PutImage events occurring between 8 PM and 8 AM…
AWS ECR Container Upload Unknown User source: The following analytic detects the upload of a new container image to AWS Elastic Container Registry (ECR) by an unknown user. It leverages AWS CloudTrail logs to identify PutImage events from the ECR service, filtering out known users.…

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`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)

Amazon Elastic Container Registry (ECR) AWS-ecr

_catch_all: AWS-ecr (catch-all)

Description

Fields #

DescribeImageScanFindings

Description

Fields #

Common Indicators #

Detection Rules #

Splunk #

PutImage

Description

Fields #

Common Indicators #

Detection Rules #

Splunk #

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