{"id":40953,"date":"2021-05-19T13:02:11","date_gmt":"2021-05-19T13:02:11","guid":{"rendered":"https:\/\/www.threatshub.org\/blog\/miscreants-started-scanning-for-exchange-hafnium-vulns-five-minutes-after-microsoft-told-world-about-zero-days\/"},"modified":"2021-05-19T13:02:11","modified_gmt":"2021-05-19T13:02:11","slug":"miscreants-started-scanning-for-exchange-hafnium-vulns-five-minutes-after-microsoft-told-world-about-zero-days","status":"publish","type":"post","link":"https:\/\/www.threatshub.org\/blog\/miscreants-started-scanning-for-exchange-hafnium-vulns-five-minutes-after-microsoft-told-world-about-zero-days\/","title":{"rendered":"Miscreants started scanning for Exchange Hafnium vulns five minutes after Microsoft told world about zero-days"},"content":{"rendered":"<p>Attackers began scanning for vulnerabilities just five minutes after Microsoft announced there were four zero-days in Exchange Server, according to Palo Alto Networks.<\/p>\n<p>Malicious people seeking to exploit flaws in general were doing so within a quarter of an hour of details being released, the company&#8217;s Cortex Xpanse research team said today.<\/p>\n<p>Although research director Rob Rachwald did not elaborate when <i>The Register<\/i> asked for more detail on its findings, a released report reckoned &#8220;scans began within 15 minutes after Common Vulnerabilities and Exposures (CVE) announcements were released between January and March.&#8221;<\/p>\n<div aria-hidden=\"true\" class=\"adun\" data-pos=\"top\" data-raptor=\"condor\" data-xsm=\",fluid,mpu,\" data-sm=\",fluid,mpu,\" data-md=\",fluid,leaderboard,mpu,\" data-lg=\",fluid,leaderboard,\" data-xlg=\",fluid,superleaderboard,billboard,leaderboard,\"> <noscript> <a href=\"https:\/\/pubads.g.doubleclick.net\/gampad\/jump?co=1&amp;iu=\/6978\/reg_security\/front&amp;sz=300x50%7C300x100%7C300x250%7C300x251%7C300x252%7C300x600%7C300x601&amp;tile=2&amp;c=2YKWUA6nTh2SaANJu6zoI5gAAAMg&amp;t=ct%3Dns%26unitnum%3D2%26raptor%3Dcondor%26pos%3Dtop%26test%3D0\" target=\"_blank\" rel=\"noopener noreferrer\"> <img decoding=\"async\" src=\"https:\/\/pubads.g.doubleclick.net\/gampad\/ad?co=1&amp;iu=\/6978\/reg_security\/front&amp;sz=300x50%7C300x100%7C300x250%7C300x251%7C300x252%7C300x600%7C300x601&amp;tile=2&amp;c=2YKWUA6nTh2SaANJu6zoI5gAAAMg&amp;t=ct%3Dns%26unitnum%3D2%26raptor%3Dcondor%26pos%3Dtop%26test%3D0\" alt> <\/a> <\/noscript> <\/div>\n<div aria-hidden=\"true\" class=\"adun\" data-pos=\"top\" data-raptor=\"falcon\" data-xxlg=\",fluid,billboard,superleaderboard,brandwidth,brandimpact,leaderboard,mpu,\"> <noscript> <a href=\"https:\/\/pubads.g.doubleclick.net\/gampad\/jump?co=1&amp;iu=\/6978\/reg_security\/front&amp;sz=300x50%7C300x100%7C300x250%7C300x251%7C300x252%7C300x600%7C300x601&amp;tile=4&amp;c=44YKWUA6nTh2SaANJu6zoI5gAAAMg&amp;t=ct%3Dns%26unitnum%3D4%26raptor%3Dfalcon%26pos%3Dmid%26test%3D0\" target=\"_blank\" rel=\"noopener noreferrer\"> <img decoding=\"async\" src=\"https:\/\/pubads.g.doubleclick.net\/gampad\/ad?co=1&amp;iu=\/6978\/reg_security\/front&amp;sz=300x50%7C300x100%7C300x250%7C300x251%7C300x252%7C300x600%7C300x601&amp;tile=4&amp;c=44YKWUA6nTh2SaANJu6zoI5gAAAMg&amp;t=ct%3Dns%26unitnum%3D426raptor%3Dfalcon%26pos%3Dmid%26test%3D0\" alt> <\/a> <\/noscript> <\/div>\n<p>&#8220;Computing has become so inexpensive that a would-be attacker need only spend about $10 to rent cloud computing power to do an imprecise scan of the entire internet for vulnerable systems,&#8221; said Palo Alto&#8217;s latest attack surface threat report. Such technology can be used for good as well as bad; search engines such as Shodan and GrayHatWarfare are built on it.<\/p>\n<p>Around a third of &#8220;overall security issues&#8221; noticed by Palo Alto related to poorly configured remote desktop protocol (RDP) setups, with cloud environments being responsible for 80 per cent of &#8220;critical&#8221; vulns spotted during what the company described as scans of &#8220;the public-facing internet attack surface of some of the world&#8217;s largest businesses.&#8221;<\/p>\n<p>The finding about time-of-flight between vuln disclosure and malicious scan hunting for exploitable deployments chimes with previous research on the same topic: last summer <a target=\"_blank\" href=\"https:\/\/www.theregister.com\/2020\/07\/09\/citrix_bugs_proof_of_concept_exploits\/\" rel=\"noopener noreferrer\">a SANS researcher noticed fresh honeypots<\/a> were being probed for newly patched Citrix vulns \u2013 ironically he was hoping for attackers to try to exploit known vulns in F5 Networks gear at the time.<\/p>\n<div aria-hidden=\"true\" class=\"adun\" data-pos=\"top\" data-raptor=\"falcon\" data-xsm=\",fluid,mpu,\" data-sm=\",fluid,mpu,\" data-md=\",fluid,leaderboard,mpu,\" data-lg=\",fluid,mpu,leaderboard,\" data-xlg=\",fluid,billboard,superleaderboard,mpu,leaderboard,\"> <noscript> <a href=\"https:\/\/pubads.g.doubleclick.net\/gampad\/jump?co=1&amp;iu=\/6978\/reg_security\/front&amp;sz=300x50%7C300x100%7C300x250%7C300x251%7C300x252%7C300x600%7C300x601&amp;tile=4&amp;c=44YKWUA6nTh2SaANJu6zoI5gAAAMg&amp;t=ct%3Dns%26unitnum%3D4%26raptor%3Dfalcon%26pos%3Dmid%26test%3D0\" target=\"_blank\" rel=\"noopener noreferrer\"> <img decoding=\"async\" src=\"https:\/\/pubads.g.doubleclick.net\/gampad\/ad?co=1&amp;iu=\/6978\/reg_security\/front&amp;sz=300x50%7C300x100%7C300x250%7C300x251%7C300x252%7C300x600%7C300x601&amp;tile=4&amp;c=44YKWUA6nTh2SaANJu6zoI5gAAAMg&amp;t=ct%3Dns%26unitnum%3D426raptor%3Dfalcon%26pos%3Dmid%26test%3D0\" alt> <\/a> <\/noscript> <\/div>\n<p>Inexplicably, some organisations drag their feet when it comes to patching even critical flaws. Last year&#8217;s Netlogon vuln, which <a target=\"_blank\" href=\"https:\/\/www.theregister.com\/2020\/09\/24\/microsoft_zerologon_in_wild\/\" rel=\"noopener noreferrer\">allowed attackers to bypass logon authentication<\/a> and gain domain admin-level privileges on vulnerable networks, was being actively exploited a month after Microsoft emitted patches amid top-grade warnings about the critical security risk that the flaw, CVE-2020-1472, posed.<\/p>\n<p>Being slow to patch has consequences, as the EU Banking Authority found out a week after <a target=\"_blank\" href=\"https:\/\/www.theregister.com\/2021\/03\/03\/hafnium_exchange_server_attack\/\" rel=\"noopener noreferrer\">patches were made available<\/a> for the Hafnium Exchange vulns; the organisation <a target=\"_blank\" href=\"https:\/\/www.theregister.com\/2021\/03\/09\/eba_exchange_breach\/\" rel=\"noopener noreferrer\">had to pull its email servers offline after being compromised<\/a>, as did <a target=\"_blank\" href=\"https:\/\/www.theregister.com\/2021\/03\/11\/stortinget_attack\/\" rel=\"noopener noreferrer\">the Norwegian Parliament<\/a>. \u00ae<\/p>\n<p> READ MORE <a href=\"https:\/\/go.theregister.com\/feed\/www.theregister.com\/2021\/05\/19\/hafnium_scans_5_mins_post_disclosure\/\">HERE<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Being slow to patch just means you&#8217;ll get pwned faster Attackers began scanning for vulnerabilities just five minutes after Microsoft announced there were four zero-days in Exchange Server, according to Palo Alto Networks.\u2026 READ MORE HERE&#8230;<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"colormag_page_layout":"default_layout","footnotes":""},"categories":[63],"tags":[],"class_list":["post-40953","post","type-post","status-publish","format-standard","hentry","category-the-register"],"yoast_head":"<!-- This site is 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