{"id":7736,"date":"2025-10-17T07:00:50","date_gmt":"2025-10-17T07:00:50","guid":{"rendered":"https:\/\/serisec.com\/index.php\/2025\/10\/17\/microsoft-revokes-200-fraudulent-html\/"},"modified":"2025-10-17T07:00:50","modified_gmt":"2025-10-17T07:00:50","slug":"microsoft-revokes-200-fraudulent-html","status":"publish","type":"post","link":"https:\/\/serisec.com\/index.php\/2025\/10\/17\/microsoft-revokes-200-fraudulent-html\/","title":{"rendered":"Microsoft Revokes 200 Fraudulent Certificates Used in Rhysida Ransomware Campaign"},"content":{"rendered":"<p>    Microsoft Revokes 200 Fraudulent Certificates Used in Rhysida Ransomware Campaign<br \/>\n \t<BR><br \/>\n<BR><\/BR><br \/>\n    <!-- no image --><br \/>\n \t<BR><br \/>\n<BR><\/BR><\/p>\n<div>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<\/div>\n<p> \t<BR><br \/>\n <BR><\/BR><\/p>\n<p> \t<BR><br \/>\n<BR><\/BR><br \/>\n<a href=\"https:\/\/thehackernews.com\/2025\/10\/microsoft-revokes-200-fraudulent.html\">Go to TheHackersNews<\/a><br \/>\n \t<BR><br \/>\n <BR><\/BR><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Microsoft Revokes 200 Fraudulent Certificates Used in Rhysida Ransomware Campaign 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 certificates were &#8220;used in fake Teams setup files to deliver the Oyster backdoor and ultimately [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[60],"tags":[76],"class_list":["post-7736","post","type-post","status-publish","format-standard","hentry","category-thehackersnews","tag-thehackersnews"],"_links":{"self":[{"href":"https:\/\/serisec.com\/index.php\/wp-json\/wp\/v2\/posts\/7736"}],"collection":[{"href":"https:\/\/serisec.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/serisec.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/serisec.com\/index.php\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/serisec.com\/index.php\/wp-json\/wp\/v2\/comments?post=7736"}],"version-history":[{"count":0,"href":"https:\/\/serisec.com\/index.php\/wp-json\/wp\/v2\/posts\/7736\/revisions"}],"wp:attachment":[{"href":"https:\/\/serisec.com\/index.php\/wp-json\/wp\/v2\/media?parent=7736"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/serisec.com\/index.php\/wp-json\/wp\/v2\/categories?post=7736"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/serisec.com\/index.php\/wp-json\/wp\/v2\/tags?post=7736"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}