Detection rules › Panther

AWS Config Service Created

Severity
informational
Compliance
CIS 3.9
Log types
AWS.CloudTrail
Tags
AWS, Security Control, Discovery:Cloud Service Discovery
Reference
https://aws.amazon.com/config/
Source
github.com/panther-labs/panther-analysis

An AWS Config Recorder or Delivery Channel was created

MITRE ATT&CK coverage

TacticTechniques
DiscoveryT1526 Cloud Service Discovery

Rule body yaml

AnalysisType: rule
Filename: aws_config_service_created.py
RuleID: "AWS.ConfigService.Created"
DisplayName: "AWS Config Service Created"
Enabled: true
LogTypes:
  - AWS.CloudTrail
Tags:
  - AWS
  - Security Control
  - Discovery:Cloud Service Discovery
Reports:
  CIS:
    - 3.9
  MITRE ATT&CK:
    - TA0007:T1526
Severity: Info
Description: >
  An AWS Config Recorder or Delivery Channel was created
Runbook: >
  Verify that the Config Service changes were authorized. If not, revert them and investigate who caused the change. Consider altering permissions to prevent this from happening again in the future.
Reference: https://aws.amazon.com/config/
SummaryAttributes:
  - eventName
  - userAgent
  - sourceIpAddress
  - recipientAccountId
  - p_any_aws_arns
Tests:
  - Name: Config Recorder Delivery Channel Created
    ExpectedResult: true
    Log:
      {
        "eventVersion": "1.05",
        "userIdentity":
          {
            "type": "AssumedRole",
            "principalId": "1111:tester",
            "arn": "arn:aws:sts::123456789012:assumed-role/tester",
            "accountId": "123456789012",
            "accessKeyId": "1",
            "sessionContext":
              {
                "sessionIssuer":
                  {
                    "type": "Role",
                    "principalId": "1111",
                    "arn": "arn:aws:iam::123456789012:role/tester",
                    "accountId": "123456789012",
                    "userName": "tester",
                  },
                "webIdFederationData": {},
                "attributes":
                  {
                    "mfaAuthenticated": "true",
                    "creationDate": "2019-01-01T00:00:00Z",
                  },
              },
          },
        "eventTime": "2019-01-01T00:00:00Z",
        "eventSource": "config.amazonaws.com",
        "eventName": "PutDeliveryChannel",
        "awsRegion": "us-west-2",
        "sourceIPAddress": "111.111.111.111",
        "userAgent": "console.amazonaws.com",
        "requestParameters": { "configurationRecorderName": "default" },
        "responseElements": null,
        "requestID": "1",
        "eventID": "1",
        "eventType": "AwsApiCall",
        "recipientAccountId": "123456789012",
      }
  - Name: Config Recorder Deleted
    ExpectedResult: false
    Log:
      {
        "eventVersion": "1.05",
        "userIdentity":
          {
            "type": "AssumedRole",
            "principalId": "1111:tester",
            "arn": "arn:aws:sts::123456789012:assumed-role/tester",
            "accountId": "123456789012",
            "accessKeyId": "1",
            "sessionContext":
              {
                "sessionIssuer":
                  {
                    "type": "Role",
                    "principalId": "1111",
                    "arn": "arn:aws:iam::123456789012:role/tester",
                    "accountId": "123456789012",
                    "userName": "tester",
                  },
                "webIdFederationData": {},
                "attributes":
                  {
                    "mfaAuthenticated": "true",
                    "creationDate": "2019-01-01T00:00:00Z",
                  },
              },
          },
        "eventTime": "2019-01-01T00:00:00Z",
        "eventSource": "config.amazonaws.com",
        "eventName": "DeleteDeliveryChannel",
        "awsRegion": "us-west-2",
        "sourceIPAddress": "111.111.111.111",
        "userAgent": "console.amazonaws.com",
        "requestParameters": { "configurationRecorderName": "default" },
        "responseElements": null,
        "requestID": "1",
        "eventID": "1",
        "eventType": "AwsApiCall",
        "recipientAccountId": "123456789012",
      }
  - Name: Error Creating Config Recorder Delivery Channel
    ExpectedResult: false
    Log:
      {
        "eventVersion": "1.05",
        "errorCode": "InvalidDeliveryChannelNameException",
        "userIdentity":
          {
            "type": "AssumedRole",
            "principalId": "1111:tester",
            "arn": "arn:aws:sts::123456789012:assumed-role/tester",
            "accountId": "123456789012",
            "accessKeyId": "1",
            "sessionContext":
              {
                "sessionIssuer":
                  {
                    "type": "Role",
                    "principalId": "1111",
                    "arn": "arn:aws:iam::123456789012:role/tester",
                    "accountId": "123456789012",
                    "userName": "tester",
                  },
                "webIdFederationData": {},
                "attributes":
                  {
                    "mfaAuthenticated": "true",
                    "creationDate": "2019-01-01T00:00:00Z",
                  },
              },
          },
        "eventTime": "2019-01-01T00:00:00Z",
        "eventSource": "config.amazonaws.com",
        "eventName": "PutDeliveryChannel",
        "awsRegion": "us-west-2",
        "sourceIPAddress": "111.111.111.111",
        "userAgent": "console.amazonaws.com",
        "requestParameters": { "configurationRecorderName": "default" },
        "responseElements": null,
        "requestID": "1",
        "eventID": "1",
        "eventType": "AwsApiCall",
        "recipientAccountId": "123456789012",
      }

Detection logic

Condition

not (errorCode is_not_null or errorMessage is_not_null)
eventName in ["PutDeliveryChannel", "PutConfigurationRecorder", "StartConfigurationRecorder"]

Exclusions

Top-level NOT(...) conjuncts: predicates this rule actively suppresses.

FieldKindExcluded values
errorCodeis_not_null(no value, null check)
errorMessageis_not_null(no value, null check)

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.

FieldKindValues
eventNamein
  • PutConfigurationRecorder
  • PutDeliveryChannel
  • StartConfigurationRecorder

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