Under Review

Hafnium check

WE have a number of queries for hafnium and additional news articles.

Check out the news https://news.sophos.com/en-us/2021/03/05/hafnium-advice-about-the-new-nation-state-attack/ 

See the video on how to take the query from the article and run it in your environment.

https://vimeo.com/528998394

and below is an additional query that also checks for specific patch numbers  and journal creation date to know if evidence may be available or not for the web shell execution history

-- HAFNIUM INFO

SELECT '----------------------' Test, '----------------------' Result, '----------------------' Evidence 

UNION ALL

-- EARLIEST Possiable observables
SELECT 
   'Earliest possiable Journal entry' Test,
   REPLACE(datetime(btime,'unixepoch'),' ','T')  Result,
   'Creation time of Sophos live query directory ' || path Evidence
FROM file WHERE path = 'C:\ProgramData\Sophos\Live Query'

UNION ALL
   
-- VULNERABLE OR NOT
SELECT DISTINCT
   'Check if Exchange is deployed or not' Test,
   GROUP_CONCAT(name, ' '||CHAR(10)) Result,
   CAST(GROUP_CONCAT( name || ' ' || version || ' ' || install_location, ' '||CHAR(10) ) AS TEXT) Evidence
FROM programs WHERE name LIKE '%exchange%'

UNION ALL

-- CHECK FOR PATCHES
SELECT DISTINCT
   'List any HotFixes Applied' TEST,
   CAST(GROUP_CONCAT(hotfix_id, ' '||CHAR(10)) AS TEXT) Result,
   CAST(GROUP_CONCAT(CASE hotfix_id
                WHEN 'KB5000802' THEN 'Windows 10, Version 2004, Windows Server, Version 2004'
                WHEN 'KB5000803' THEN 'Windows 10, Version 1607, Windows Server 2016'
                WHEN 'KB5000808' THEN 'Windows 10, Version 1909, Windows Server, Version 1909'
                WHEN 'KB5000822' THEN 'Windows 10, Version 1809, Windows Server 2019'
                WHEN 'KB5000840' THEN 'Windows Server 2012 (Security-only update)'
                WHEN 'KB5000841' THEN 'Windows 7, Windows Server 2008 R2 (Monthly Rollup)'
                WHEN 'KB5000844' THEN 'Windows Server 2008 (Monthly Rollup)'
                WHEN 'KB5000847' THEN 'Windows Server 2012 (Monthly Rollup)'
                WHEN 'KB5000848' THEN 'Windows 8.1, Windows RT 8.1, Windows Server 2012 R2 (Monthly Rollup)'
                WHEN 'KB5000851' THEN 'Windows 7, Windows Server 2008 R2 (Security-only update)'
                WHEN 'KB5000853' THEN 'Windows 8.1, Windows RT 8.1, Windows Server 2012 R2 (Security-only update)'
                WHEN 'KB5000856' THEN 'Windows Server 2008 (Security-only update)'
                WHEN 'KB5000871' THEN 'Microsoft Exchange Server 2019, 2016 and 2013'
                WHEN 'KB5000878' THEN 'Microsoft Exchange Server 2010'
             END, ','||CHAR(10)) AS TEXT) Evidence
FROM patches 
WHERE hotfix_id IN ('KB5000802','KB5000803','KB5000808','KB5000822','KB5000840','KB5000841','KB5000844','KB5000847','KB5000848','KB5000851','KB5000853','KB5000856','KB5000871','KB5000878')

UNION ALL

-- CHECK FOR Exchange Version Info
SELECT DISTINCT
   'Check Exchange Version to confirm Patch' Test,
   CASE product_version 
      WHEN '15.0.1497.12' THEN 'Patched'
      WHEN '15.1.2106.13' THEN 'Patched'
      WHEN '15.1.2176.9' THEN 'Patched'
      WHEN '15.2.721.13' THEN 'Patched'
      WHEN '15.2.792.10' THEN 'Patched'
      ELSE 'NOT PATCHED'
   END Result,
   filename || ' Product_Version: ' || Product_version || ' ' || path Evidence
FROM file 
WHERE path = ( (SELECT data FROM registry 
                WHERE key = 'HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\ExchangeServer\v15\Setup' AND path = 'HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\ExchangeServer\v15\Setup\MsiInstallPath' 
               )||'bin\Microsoft.Exchange.RpcClientAccess.Service.exe')

UNION ALL

-- SUSPECT Web Shells
SELECT DISTINCT
   'List of Suspect Web Shell files (if any)' TEST,
   CAST(GROUP_CONCAT(filename || ' Found' || CHAR(10)) AS TEXT) Result,
   CAST(GROUP_CONCAT('PATH: ' || path || CHAR(10) || 'CREATED ON: ' || DATETIME(btime,'unixepoch') || CHAR(10)) AS TEXT) Evidence
FROM file
WHERE (path LIKE 'C:\inetpub\wwwroot\aspnet_client\%' OR path LIKE 'C:\inetpub\wwwroot\aspnet_client\system_web\%' OR 
       path LIKE 'C:\Program Files\Microsoft\Exchange Server\V15\FrontEnd\HttpProxy\owa\auth\%') AND 
      (filename IN ('web.aspx','help.aspx','document.aspx','errorEE.aspx','errorEEE.aspx','errorEW.aspx','errorFF.aspx','web.aspx',
                    'healthcheck.aspx','aspnet_www.aspx','aspnet_client.aspx','xx.aspx','shell.aspx','aspnet_iisstart.aspx','one.aspx',
                    'errorcheck.aspx','t.aspx','discover.aspx','aspnettest.aspx','error.aspx','RedirSuiteServerProxy.aspx','shellex.aspx',
                    'supp0rt.aspx','HttpProxy.aspx','system_web.aspx','OutlookEN.aspx','TimeoutLogout.aspx','Logout.aspx',
                    'OutlookJP.aspx','MultiUp.aspx','OutlookRU.aspx') OR
       (LENGTH(filename) = 13) )

UNION ALL

-- Possiable BREACH DETECTED
SELECT DISTINCT
   'Suspect webshell with cmd process detected' TEST,
   'Found CMD or POWERSHELL Running through WebShell' Result,
   sophosPID || ' ' || processname || ' run from w3wp.ex or UMWorkerPRocess.exe'  Evidence
FROM sophos_process_journal spj WHERE LOWER(spj.processname) IN ('cmd.exe','powershell.exe','csc.exe') AND time > strftime('%s','now','-15 days') AND 
   (SELECT LOWER(processname) FROM sophos_process_journal spj2 WHERE spj2.sophosPID = spj.parentSophosPID) IN ('w3wp.exe', 'umworkerprocess.exe')