{"id":2124,"date":"2025-10-17T06:03:00","date_gmt":"2025-10-17T06:03:00","guid":{"rendered":"https:\/\/infosec-daily.com\/?page_id=2124"},"modified":"2025-10-17T06:03:00","modified_gmt":"2025-10-17T06:03:00","slug":"microsoft-revokes-200-fraudulent-certificates-used-in-rhysida-ransomware-campaign","status":"publish","type":"page","link":"https:\/\/infosec-daily.com\/?page_id=2124","title":{"rendered":"Microsoft Revokes 200 Fraudulent Certificates Used in Rhysida Ransomware Campaign"},"content":{"rendered":"<p>Microsoft on Thursday disclosed that it revoked more than 200 certificates used by a threat actor it tracks as Vanilla Tempest to fraudulently sign malicious binaries in ransomware attacks.<br \/>\nThe certificates were &#8220;used in fake Teams setup files to deliver the Oyster backdoor and ultimately deploy Rhysida ransomware,&#8221; the Microsoft Threat Intelligence team said in a post shared on X.<br \/>\nThe tech<\/p>","protected":false},"excerpt":{"rendered":"<p>Microsoft on Thursday disclosed that it revoked more than 200 certificates used by a threat actor it tracks as Vanilla Tempest to fraudulently sign malicious binaries in ransomware attacks. The&hellip;<\/p>\n","protected":false},"author":1,"featured_media":2125,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"saved_in_kubio":false,"footnotes":""},"class_list":["post-2124","page","type-page","status-publish","has-post-thumbnail","hentry"],"kubio_ai_page_context":{"short_desc":"","purpose":"general"},"_links":{"self":[{"href":"https:\/\/infosec-daily.com\/index.php?rest_route=\/wp\/v2\/pages\/2124","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/infosec-daily.com\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/infosec-daily.com\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/infosec-daily.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/infosec-daily.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2124"}],"version-history":[{"count":0,"href":"https:\/\/infosec-daily.com\/index.php?rest_route=\/wp\/v2\/pages\/2124\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/infosec-daily.com\/index.php?rest_route=\/wp\/v2\/media\/2125"}],"wp:attachment":[{"href":"https:\/\/infosec-daily.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2124"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}