Command and Control (TA0011)(external, opens in a new tab or window)
text code block:from logs-anthropic.audit-* metadata _id, _version, _index | where data_stream.dataset == "anthropic.audit" and event.outcome == "success" and source.ip is not null and source.ip != "0.0.0.0" and user.email is not null and user_agent.original is not null | eval Esql.ua_lower = to_lower(user_agent.original) | where ( Esql.ua_lower like "curl*" or Esql.ua_lower like "python*" or Esql.ua_lower like "wget*" or Esql.ua_lower like "go-http*" or Esql.ua_lower like "perl*" or Esql.ua_lower like "libwww-perl*" or Esql.ua_lower like "java*" or Esql.ua_lower like "node*" or Esql.ua_lower like "php*" or Esql.ua_lower like "guzzle*" or Esql.ua_lower like "bun*" or Esql.ua_lower like "axios*" or Esql.ua_lower like "undici*" or Esql.ua_lower like "okhttp*" or Esql.ua_lower like "apache-httpclient*" or Esql.ua_lower like "httpclient*" or Esql.ua_lower like "httpie*" or Esql.ua_lower like "ruby*" or Esql.ua_lower like "postmanruntime*" or Esql.ua_lower like "restsharp*" or Esql.ua_lower like "*kali*" or Esql.ua_lower like "*parrot*" or Esql.ua_lower like "*pentoo*" or Esql.ua_lower like "*backbox*" or Esql.ua_lower like "*blackarch*" or Esql.ua_lower like "scrapy*" or Esql.ua_lower like "mechanize*" or Esql.ua_lower like "aiohttp*" or Esql.ua_lower like "httpx*" or Esql.ua_lower like "requests*" or Esql.ua_lower like "pycurl*" or Esql.ua_lower like "urllib*" or Esql.ua_lower like "got/*" or Esql.ua_lower like "node-fetch*" or Esql.ua_lower like "superagent*" or Esql.ua_lower like "ky/*" or Esql.ua_lower like "fetch*" or Esql.ua_lower like "deno*" or Esql.ua_lower like "powershell*" or Esql.ua_lower like "invoke-webrequest*" or Esql.ua_lower like "windowspowershell*" or Esql.ua_lower like "wget2*" or Esql.ua_lower like "aria2*" or Esql.ua_lower like "httrack*" or Esql.ua_lower like "nikto*" or Esql.ua_lower like "sqlmap*" or Esql.ua_lower like "nmap*" or Esql.ua_lower like "masscan*" or Esql.ua_lower like "zgrab*" or Esql.ua_lower like "nuclei*" or Esql.ua_lower like "dirbuster*" or Esql.ua_lower like "gobuster*" or Esql.ua_lower like "ffuf*" or Esql.ua_lower like "feroxbuster*" or Esql.ua_lower like "wfuzz*" or Esql.ua_lower like "burpsuite*" or Esql.ua_lower like "hydra*" or Esql.ua_lower like "metasploit*" or Esql.ua_lower like "*havoc*" or Esql.ua_lower like "*sliver*" or Esql.ua_lower like "*cobalt strike*" or Esql.ua_lower like "dart*" or Esql.ua_lower like "rector*" or Esql.ua_lower like "ruby-faraday*" or Esql.ua_lower like "httparty*" or Esql.ua_lower like "clj-http*" or Esql.ua_lower like "hackney*" or Esql.ua_lower like "elixir*" or Esql.ua_lower like "swift-nio*" or Esql.ua_lower like "vapor*" or Esql.ua_lower like "rust*" or Esql.ua_lower like "reqwest*" or Esql.ua_lower like "ureq*" or Esql.ua_lower like "hyper/*" or Esql.ua_lower like "cohere-go*" or Esql.ua_lower like "openai*" or Esql.ua_lower like "anthropic-sdk*" or Esql.ua_lower like "langchain*" or Esql.ua_lower like "llamaindex*" or Esql.ua_lower like "litellm*" or Esql.ua_lower like "dspy*" or Esql.ua_lower like "*zgrab*" or Esql.ua_lower like "*masscan*" or Esql.ua_lower like "*nessus*" or Esql.ua_lower like "*shodan*" or Esql.ua_lower like "*censys*" or Esql.ua_lower like "*binaryedge*" or Esql.ua_lower like "*internetmeasurement*" or Esql.ua_lower like "*internetcensus*" or Esql.ua_lower like "*shadowserver*" or Esql.ua_lower like "*stretchoid*" or Esql.ua_lower like "*http.rb*" ) and not ( event.action in ( "platform_file_deleted", "platform_file_uploaded", "claude_file_uploaded", "trusted_device_enrolled", "environment_created" ) and (Esql.ua_lower like "go-http*" or Esql.ua_lower like "axios*") ) | keep _id, _version, _index, @timestamp, event.*, organization.*, user.*, source.*, user_agent.*, anthropic.audit.*, data_stream.*, Esql.ua_lower
Install detection rules in Elastic Security
Detect Anthropic Activity from a Suspicious User Agent 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).