AWS Systems Manager SecureString Parameter Request with Decryption Flag

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About the rule

Rule Type

Standard

Rule Description

Detects the first occurrence of a user identity accessing AWS Systems Manager (SSM) SecureString parameters using the GetParameter or GetParameters API actions with credentials in the request parameters. This could indicate that the user is accessing sensitive information. This rule detects when a user accesses a SecureString parameter with thewithDecryptionparameter set to true. This is aNewTermsrule that detects the first occurrence of a specific AWS ARN accessing SecureString parameters with decryption within the last 10 days.

Severity

Trouble

Rule Requirement

Criteria

Action1: actionname = "DETECTION_ACTION_AWS_SECURE_PARAM_REQUESTED_WITH_DECRYPTION" select Action1.CALLER,Action1.HOSTNAME,Action1.IPADDRESS,Action1.LOG_EVENT_NAME,Action1.SOURCE,Action1.SOURCE_REGION,Action1.REQUESTPARAMETERS

Detection

Execution Mode

realtime

Log Sources

AWS