Approved

Hunting query for follina 0-click RCE - not optimised for performance

SELECT
  ARRAY_JOIN(ARRAY_AGG(DISTINCT windows_processes.meta_hostname), CHR(10)) AS ep_list,
  COUNT(DISTINCT windows_processes.meta_hostname) AS ep_count,
  windows_processes.name AS process_name,
  windows_processes.path AS path,
  windows_processes.cmdline AS cmd_line,
  DATE_FORMAT(FROM_UNIXTIME(MIN(windows_processes.time)), '%Y-%m-%dT%H:%i:%SZ') AS first_seen,
  DATE_FORMAT(FROM_UNIXTIME(MAX(windows_processes.time)), '%Y-%m-%dT%H:%i:%SZ') AS last_seen,
  windows_processes.parent_name AS parent_process_name,
  windows_processes.parent_path AS parent_path,
  windows_processes.username AS user_name,
  ARRAY_JOIN(ARRAY_AGG(DISTINCT windows_processes.sophos_pid), CHR(10)) AS sophos_pid_list,
  ARRAY_JOIN(ARRAY_AGG(DISTINCT windows_processes.parent_sophos_pid), CHR(10)) AS parent_sophos_pid_list,
  windows_processes.sha256 AS sha256,
  windows_processes.ml_score AS ml_score,
  windows_processes.pua_score AS pua_score,
  windows_processes.global_rep AS global_rep,
  windows_processes.local_rep AS local_rep
FROM
  xdr_data AS windows_processes
WHERE
   windows_processes.query_name = 'running_processes_windows_sophos'
   AND 
   (
        LOWER(windows_processes.name) = 'msdt.exe'
        AND (
            LOWER(windows_processes.parent_name) IN ('winword.exe', 'excel.exe', 'outlook.exe')
        )
    )
GROUP BY
   windows_processes.username,
   windows_processes.parent_name,
   windows_processes.name,
   windows_processes.cmdline,
   windows_processes.sha256,
   windows_processes.path,
   windows_processes.ml_score,
   windows_processes.pua_score,
   windows_processes.global_rep,
   windows_processes.local_rep,
   windows_processes.parent_path
ORDER BY last_seen DESC

We've been using this query for detecting the Follina RCE in our lab. Open for suggestions :-)

BR, reg1nleifr

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