Credential Access (TA0006)(external, opens in a new tab or window)
Initial Access (TA0001)(external, opens in a new tab or window)
text code block:from logs-aws.cloudtrail-* | where data_stream.dataset == "aws.cloudtrail" and event.provider == "bedrock.amazonaws.com" and event.action in ("InvokeModel", "InvokeModelWithResponseStream", "Converse", "ConverseStream") and event.outcome == "success" and aws.cloudtrail.user_identity.arn is not null and source.ip is not null and source.geo.country_name is not null | eval Esql.identity = coalesce( aws.cloudtrail.user_identity.session_context.session_issuer.arn, aws.cloudtrail.user_identity.arn ) | stats Esql.country_count = count_distinct(source.geo.country_name), Esql.source_ip_count = count_distinct(source.ip), Esql.user_agent_count = count_distinct(user_agent.original), Esql.event_count = count(*), Esql.event_action_values = values(event.action), Esql.source_ip_values = values(source.ip), Esql.source_geo_country_name_values = values(source.geo.country_name), Esql.source_geo_city_name_values = values(source.geo.city_name), Esql.source_as_organization_name_values = values(source.as.organization.name), Esql.user_agent_original_values = values(user_agent.original), Esql.aws_cloudtrail_user_identity_arn_values = values(aws.cloudtrail.user_identity.arn), Esql.aws_cloudtrail_user_identity_type_values = values(aws.cloudtrail.user_identity.type), Esql.aws_cloudtrail_user_identity_access_key_id_values = values(aws.cloudtrail.user_identity.access_key_id), Esql.cloud_region_values = values(cloud.region), Esql.timestamp_first_seen = min(@timestamp), Esql.timestamp_last_seen = max(@timestamp) by Esql.identity, cloud.account.id | where Esql.country_count >= 3 and Esql.source_ip_count >= 3 | eval source.ip = mv_first(Esql.source_ip_values) | keep Esql.identity, cloud.account.id, source.ip, Esql.country_count, Esql.source_ip_count, Esql.user_agent_count, Esql.event_count, Esql.event_action_values, Esql.source_ip_values, Esql.source_geo_country_name_values, Esql.source_geo_city_name_values, Esql.source_as_organization_name_values, Esql.user_agent_original_values, Esql.aws_cloudtrail_user_identity_arn_values, Esql.aws_cloudtrail_user_identity_type_values, Esql.aws_cloudtrail_user_identity_access_key_id_values, Esql.cloud_region_values, Esql.timestamp_first_seen, Esql.timestamp_last_seen
Install detection rules in Elastic Security
Detect AWS Bedrock Model Invocation From High Number of Countries in the Elastic Security detection engine by installing this rule into your Elastic Stack.
To setup this rule, check out the installation guide for Prebuilt Security Detection Rules(external, opens in a new tab or window).