AWSCloudTrail - Amazon ECR image scanning disabled

Back


Id	19602494-94af-43c8-90ba-eb0e14999612
Rulename	AWSCloudTrail - Amazon ECR image scanning disabled
Description	Identifies Amazon ECR image scanning being disabled. This change can reduce visibility into vulnerable container images and may indicate defense evasion or weakening of container security controls.
Severity	Medium
Tactics	DefenseEvasion
Techniques	T1562.001
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_ECRImageScanningDisabled.yaml
Version	1.0.2
Arm template	19602494-94af-43c8-90ba-eb0e14999612.json

KQL

AWSCloudTrail
| where EventName == "PutImageScanningConfiguration" and isempty(ErrorCode) and isempty(ErrorMessage)
| extend scanOnPush = parse_json(tostring((parse_json(RequestParameters).imageScanningConfiguration))).scanOnPush
| where scanOnPush == false
| 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]), "")
| distinct TimeGenerated, EventName, SourceIpAddress, UserIdentityArn, UserIdentityUserName, RecipientAccountId, AccountName, AccountUPNSuffix

YAML

entityMappings:
- entityType: Account
  fieldMappings:
  - identifier: Name
    columnName: AccountName
  - identifier: UPNSuffix
    columnName: AccountUPNSuffix
  - identifier: CloudAppAccountId
    columnName: RecipientAccountId
- entityType: IP
  fieldMappings:
  - identifier: Address
    columnName: SourceIpAddress
tactics:
- DefenseEvasion
requiredDataConnectors:
- dataTypes:
  - AWSCloudTrail
  connectorId: AWS
alertDetailsOverride:
  alertDisplayNameFormat: Amazon ECR image scanning disabled by {{AccountName}} from {{SourceIpAddress}}
  alertDescriptionFormat: Amazon ECR image scanning was disabled by {{AccountName}} from {{SourceIpAddress}} in account {{RecipientAccountId}}
id: 19602494-94af-43c8-90ba-eb0e14999612
severity: Medium
status: Available
customDetails:
  RecipientAccountId: RecipientAccountId
  UserIdentityArn: UserIdentityArn
  UserIdentityUserName: UserIdentityUserName
  EventName: EventName
query: |
  AWSCloudTrail
  | where EventName == "PutImageScanningConfiguration" and isempty(ErrorCode) and isempty(ErrorMessage)
  | extend scanOnPush = parse_json(tostring((parse_json(RequestParameters).imageScanningConfiguration))).scanOnPush
  | where scanOnPush == false
  | 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]), "")
  | distinct TimeGenerated, EventName, SourceIpAddress, UserIdentityArn, UserIdentityUserName, RecipientAccountId, AccountName, AccountUPNSuffix  
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Amazon Web Services/Analytic Rules/AWS_ECRImageScanningDisabled.yaml
kind: Scheduled
queryPeriod: 1d
version: 1.0.2
name: AWSCloudTrail - Amazon ECR image scanning disabled
queryFrequency: 1d
triggerThreshold: 0
relevantTechniques:
- T1562.001
description: |
    Identifies Amazon ECR image scanning being disabled. This change can reduce visibility into vulnerable container images and may indicate defense evasion or weakening of container security controls.
triggerOperator: gt

ARM