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-anthropic.audit-* | where user.email IS NOT NULL and source.ip IS NOT NULL and `user.email` != "unknown@invalid.internal" | IP_LOCATION geo = source.ip with { "properties": ["country_name", "city_name", "location"] } | stats Esql.country_count = COUNT_DISTINCT(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(geo.country_name), Esql.source_geo_city_name_values = values(geo.city_name), Esql.user_agent_original_values = values(user_agent.original), Esql.timestamp_first_seen = min(@timestamp), Esql.timestamp_last_seen = max(@timestamp) by user.email | where Esql.country_count >= 3 AND Esql.user_agent_count >= 2 AND (MV_CONTAINS(Esql.event_action_values, "claude_chat_created") or MV_CONTAINS(Esql.event_action_values, "claude_chat_deleted") or MV_CONTAINS(Esql.event_action_values, "claude_user_settings_updated") or MV_CONTAINS(Esql.event_action_values, "claude_file_deleted") or MV_CONTAINS(Esql.event_action_values, "claude_chat_updated")) | Keep user.email, Esql.*
Install detection rules in Elastic Security
Detect Anthropic User Activity 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).