AWSCloudTrail - ECR image scan findings high or critical

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Id	f6928301-56da-4d2c-aabe-e1a552bc8892
Rulename	AWSCloudTrail - ECR image scan findings high or critical
Description	Identifies Amazon ECR image scan findings that report high or critical severity vulnerabilities. These findings indicate container images that should be reviewed and remediated before deployment or continued use.
Severity	High
Tactics	Discovery
Techniques	T1083
Required data connectors	AWS
Kind	Scheduled
Query frequency	1d
Query period	1d
Trigger threshold	0
Trigger operator	gt
Source Uri	https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Amazon Web Services/Analytic Rules/AWS_ECRContainerHigh.yaml
Version	1.0.3
Arm template	f6928301-56da-4d2c-aabe-e1a552bc8892.json

KQL

AWSCloudTrail
| where EventName == "DescribeImageScanFindings" and isempty(ErrorCode) and isempty(ErrorMessage)
| extend repoName = tostring(parse_json(ResponseElements).repositoryName)
| extend imageId = tostring(parse_json(ResponseElements).imageId.imageDigest)
| extend Critical = toint(parse_json(ResponseElements).imageScanFindings.findingSeverityCounts.CRITICAL)
| extend High = toint(parse_json(ResponseElements).imageScanFindings.findingSeverityCounts.HIGH)
| where Critical > 0 or High > 0
| extend UserIdentityArn = iif(isempty(UserIdentityArn), tostring(parse_json(Resources)[0].ARN), UserIdentityArn)
| extend UserName = tostring(split(UserIdentityArn, '/')[-1])
| extend AccountName = case( UserIdentityPrincipalid == "Anonymous", "Anonymous", isempty(UserIdentityUserName), UserName, UserIdentityUserName)
| extend AccountName = iif(AccountName contains "@", tostring(split(AccountName, '@', 0)[0]), AccountName),
  AccountUPNSuffix = iif(AccountName contains "@", tostring(split(AccountName, '@', 1)[0]), "")

YAML

queryPeriod: 1d
entityMappings:
- entityType: Account
  fieldMappings:
  - columnName: AccountName
    identifier: Name
  - columnName: AccountUPNSuffix
    identifier: UPNSuffix
  - columnName: RecipientAccountId
    identifier: CloudAppAccountId
- entityType: IP
  fieldMappings:
  - columnName: SourceIpAddress
    identifier: Address
relevantTechniques:
- T1083
triggerOperator: gt
triggerThreshold: 0
status: Available
name: AWSCloudTrail - ECR image scan findings high or critical
requiredDataConnectors:
- connectorId: AWS
  dataTypes:
  - AWSCloudTrail
id: f6928301-56da-4d2c-aabe-e1a552bc8892
version: 1.0.3
description: |
    Identifies Amazon ECR image scan findings that report high or critical severity vulnerabilities. These findings indicate container images that should be reviewed and remediated before deployment or continued use.
alertDetailsOverride:
  alertDisplayNameFormat: AWS ECR image scan findings with high or critical Vulnerabilities in {{repoName}}
  alertDescriptionFormat: ECR image {{imageId}} in repository {{repoName}} returned critical and high findings.
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Amazon Web Services/Analytic Rules/AWS_ECRContainerHigh.yaml
query: |
  AWSCloudTrail
  | where EventName == "DescribeImageScanFindings" and isempty(ErrorCode) and isempty(ErrorMessage)
  | extend repoName = tostring(parse_json(ResponseElements).repositoryName)
  | extend imageId = tostring(parse_json(ResponseElements).imageId.imageDigest)
  | extend Critical = toint(parse_json(ResponseElements).imageScanFindings.findingSeverityCounts.CRITICAL)
  | extend High = toint(parse_json(ResponseElements).imageScanFindings.findingSeverityCounts.HIGH)
  | where Critical > 0 or High > 0
  | extend UserIdentityArn = iif(isempty(UserIdentityArn), tostring(parse_json(Resources)[0].ARN), UserIdentityArn)
  | extend UserName = tostring(split(UserIdentityArn, '/')[-1])
  | extend AccountName = case( UserIdentityPrincipalid == "Anonymous", "Anonymous", isempty(UserIdentityUserName), UserName, UserIdentityUserName)
  | extend AccountName = iif(AccountName contains "@", tostring(split(AccountName, '@', 0)[0]), AccountName),
    AccountUPNSuffix = iif(AccountName contains "@", tostring(split(AccountName, '@', 1)[0]), "")  
queryFrequency: 1d
customDetails:
  Repository: repoName
  CriticalFindings: Critical
  HighFindings: High
  ImageDigest: imageId
kind: Scheduled
tactics:
- Discovery
severity: High

ARM