{"id":11650,"date":"2026-05-29T12:29:46","date_gmt":"2026-05-29T05:29:46","guid":{"rendered":"https:\/\/microsoft.cmctelecom.vn\/microsoft-tin-tac-qua-mat-mfa-chiem-tai-khoan-chuyen-huong-luong-nhan-vien\/"},"modified":"2026-05-29T17:03:33","modified_gmt":"2026-05-29T10:03:33","slug":"microsoft-tin-tac-qua-mat-mfa-chiem-tai-khoan-chuyen-huong-luong-nhan-vien","status":"publish","type":"post","link":"https:\/\/microsoft.cmctelecom.vn\/en\/microsoft-tin-tac-qua-mat-mfa-chiem-tai-khoan-chuyen-huong-luong-nhan-vien\/","title":{"rendered":"Microsoft: Tin t\u1eb7c qua m\u1eb7t MFA, chi\u1ebfm t\u00e0i kho\u1ea3n \u0111\u1ec3 chuy\u1ec3n h\u01b0\u1edbng l\u01b0\u01a1ng nh\u00e2n vi\u00ean"},"content":{"rendered":"<p>Ng\u00e0y 9\/4\/2026, c\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u t\u1eeb \u0111\u1ed9i ng\u0169 DART (Detection and Response Team) c\u1ee7a Microsoft \u0111\u00e3 c\u00f4ng b\u1ed1 ph\u00e2n t\u00edch v\u1ec1 Storm-2755, m\u1ed9t nh\u00f3m tin t\u1eb7c m\u1edbi c\u00f3 \u0111\u1ed9ng c\u01a1 t\u00e0i ch\u00ednh. Nh\u00f3m n\u00e0y \u0111ang th\u1ef1c hi\u1ec7n c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng &#8220;c\u01b0\u1edbp l\u01b0\u01a1ng&#8221; (<em>payroll pirate<\/em>) nh\u1eafm v\u00e0o nh\u00e2n vi\u00ean, s\u1eed d\u1ee5ng k\u1ef9 thu\u1eadt tinh vi \u0111\u1ec3 qua m\u1eb7t c\u1ea3 x\u00e1c th\u1ef1c \u0111a y\u1ebfu t\u1ed1 (MFA), chi\u1ebfm \u0111o\u1ea1t t\u00e0i kho\u1ea3n v\u00e0 chuy\u1ec3n h\u01b0\u1edbng c\u00e1c kho\u1ea3n thanh to\u00e1n l\u01b0\u01a1ng, g\u00e2y thi\u1ec7t h\u1ea1i t\u00e0i ch\u00ednh tr\u1ef1c ti\u1ebfp cho c\u00e1 nh\u00e2n v\u00e0 doanh nghi\u1ec7p.<\/p>\n<p>\u0110i\u1ec3m \u0111\u1eb7c bi\u1ec7t c\u1ee7a chi\u1ebfn d\u1ecbch n\u00e0y l\u00e0 vi\u1ec7c s\u1eed d\u1ee5ng k\u1ef9 thu\u1eadt <em>adversary-in-the-middle (AiTM)<\/em>, cho ph\u00e9p tin t\u1eb7c chi\u1ebfm quy\u1ec1n c\u00e1c phi\u00ean \u0111\u0103ng nh\u1eadp \u0111\u00e3 \u0111\u01b0\u1ee3c x\u00e1c th\u1ef1c, t\u1eeb \u0111\u00f3 v\u00f4 hi\u1ec7u h\u00f3a c\u00e1c bi\u1ec7n ph\u00e1p b\u1ea3o v\u1ec7 MFA truy\u1ec1n th\u1ed1ng.<\/p>\n<h2>Chu\u1ed7i t\u1ea5n c\u00f4ng c\u1ee7a Storm-2755<\/h2>\n<p>Ph\u00e2n t\u00edch c\u1ee7a Microsoft cho th\u1ea5y chi\u1ebfn d\u1ecbch c\u1ee7a Storm-2755 \u0111\u01b0\u1ee3c x\u00e2y d\u1ef1ng xoay quanh vi\u1ec7c chi\u1ebfm \u0111o\u1ea1t phi\u00ean l\u00e0m vi\u1ec7c (session hijacking) v\u00e0 l\u1ea1m d\u1ee5ng c\u00e1c quy tr\u00ecnh nghi\u1ec7p v\u1ee5 h\u1ee3p ph\u00e1p. Tin t\u1eb7c k\u1ebft h\u1ee3p vi\u1ec7c \u0111\u00e1nh c\u1eafp th\u00f4ng tin \u0111\u0103ng nh\u1eadp v\u00e0 token ban \u0111\u1ea7u v\u1edbi vi\u1ec7c duy tr\u00ec truy c\u1eadp dai d\u1eb3ng \u0111\u1ec3 t\u00ecm ki\u1ebfm c\u00e1c quy tr\u00ecnh li\u00ean quan \u0111\u1ebfn b\u1ea3ng l\u01b0\u01a1ng v\u00e0 nh\u00e2n s\u1ef1 (HR) trong c\u00e1c t\u1ed5 ch\u1ee9c b\u1ecb \u1ea3nh h\u01b0\u1edfng.<\/p>\n<h3>Giai \u0111o\u1ea1n 1: L\u1eeba \u0111\u1ea3o chi\u1ebfm quy\u1ec1n truy c\u1eadp<\/h3>\n<p>Storm-2755 \u0111\u00e3 s\u1eed d\u1ee5ng k\u1ef9 thu\u1eadt \u0111\u1ea7u \u0111\u1ed9c k\u1ebft qu\u1ea3 t\u00ecm ki\u1ebfm (SEO poisoning) v\u00e0 qu\u1ea3ng c\u00e1o \u0111\u1ed9c h\u1ea1i (malvertising) \u0111\u1ec3 \u0111\u01b0a t\u00ean mi\u1ec1n do ch\u00fang ki\u1ec3m so\u00e1t (bluegraintours[.]com) l\u00ean \u0111\u1ea7u k\u1ebft qu\u1ea3 t\u00ecm ki\u1ebfm cho c\u00e1c t\u1eeb kh\u00f3a chung nh\u01b0 \u201cOffice 365\u201d.<\/p>\n<p>Ng\u01b0\u1eddi d\u00f9ng kh\u00f4ng nghi ng\u1edd \u0111\u00e3 nh\u1ea5p v\u00e0o c\u00e1c li\u00ean k\u1ebft n\u00e0y v\u00e0 b\u1ecb chuy\u1ec3n h\u01b0\u1edbng \u0111\u1ebfn m\u1ed9t trang \u0111\u0103ng nh\u1eadp Microsoft 365 gi\u1ea3 m\u1ea1o. Khi h\u1ecd nh\u1eadp th\u00f4ng tin, tin t\u1eb7c kh\u00f4ng ch\u1ec9 \u0111\u00e1nh c\u1eafp m\u1eadt kh\u1ea9u m\u00e0 c\u00f2n c\u1ea3 token x\u00e1c th\u1ef1c th\u00f4ng qua k\u1ef9 thu\u1eadt AiTM. K\u1ef9 thu\u1eadt n\u00e0y cho ph\u00e9p tin t\u1eb7c sao ch\u00e9p to\u00e0n b\u1ed9 lu\u1ed3ng x\u00e1c th\u1ef1c, l\u1ea5y \u0111\u01b0\u1ee3c cookie phi\u00ean v\u00e0 token truy c\u1eadp OAuth, gi\u00fap ch\u00fang truy c\u1eadp v\u00e0o d\u1ecbch v\u1ee5 m\u00e0 kh\u00f4ng c\u1ea7n nh\u1eadp l\u1ea1i m\u1eadt kh\u1ea9u hay m\u00e3 MFA.<\/p>\n<h3>Giai \u0111o\u1ea1n 2: Duy tr\u00ec truy c\u1eadp v\u00e0 t\u00ecm ki\u1ebfm m\u1ee5c ti\u00eau<\/h3>\n<p>Sau khi chi\u1ebfm \u0111\u01b0\u1ee3c token, Storm-2755 \u0111\u00e3 s\u1eed d\u1ee5ng m\u1ed9t HTTP client t\u00ean l\u00e0 <strong>Axios<\/strong> (phi\u00ean b\u1ea3n 1.7.9) \u0111\u1ec3 li\u00ean t\u1ee5c l\u00e0m m\u1edbi phi\u00ean \u0111\u0103ng nh\u1eadp, th\u01b0\u1eddng l\u00e0 m\u1ed7i 30 ph\u00fat. \u0110i\u1ec1u n\u00e0y cho ph\u00e9p ch\u00fang duy tr\u00ec quy\u1ec1n truy c\u1eadp v\u00e0o t\u00e0i kho\u1ea3n n\u1ea1n nh\u00e2n m\u1ed9t c\u00e1ch \u00e2m th\u1ea7m.<\/p>\n<p>Khi \u0111\u00e3 \u1edf b\u00ean trong, tin t\u1eb7c b\u1eaft \u0111\u1ea7u t\u00ecm ki\u1ebfm tr\u00ean intranet c\u1ee7a t\u1ed5 ch\u1ee9c v\u1edbi c\u00e1c t\u1eeb kh\u00f3a nh\u01b0 \u201cpayroll\u201d, \u201cHR\u201d, \u201chuman resources\u201d, \u201cfinance\u201d, \u201cadmin\u201d \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh c\u00e1c quy tr\u00ecnh v\u00e0 nh\u00e2n s\u1ef1 li\u00ean quan \u0111\u1ebfn vi\u1ec7c tr\u1ea3 l\u01b0\u01a1ng.<\/p>\n<figure class=\"wp-block-image size-large aligncenter\" style=\"text-align: center; margin: 1.5em 0;\"><img decoding=\"async\" style=\"border-radius: 8px; border: 1px solid #e5e7eb; max-width: 100%; max-height: 560px; width: auto; height: auto; display: inline-block;\" src=\"https:\/\/microsoft.cmctelecom.vn\/wp-content\/uploads\/2026\/05\/a5e15ef4e4.webp\" alt=\"S\u01a1 \u0111\u1ed3 chu\u1ed7i t\u1ea5n c\u00f4ng c\u1ee7a Storm-2755\" \/><\/figure>\n<h3>Giai \u0111o\u1ea1n 3: Tr\u00e1nh b\u1ecb ph\u00e1t hi\u1ec7n v\u00e0 g\u00e2y thi\u1ec7t h\u1ea1i<\/h3>\n<p>\u0110\u1ec3 n\u1ea1n nh\u00e2n kh\u00f4ng ph\u00e1t hi\u1ec7n ra h\u00e0nh vi m\u1edd \u00e1m, Storm-2755 \u0111\u00e3 t\u1ea1o c\u00e1c quy t\u1eafc trong h\u1ed9p th\u01b0 (inbox rules) c\u1ee7a ng\u01b0\u1eddi d\u00f9ng. C\u00e1c quy t\u1eafc n\u00e0y t\u1ef1 \u0111\u1ed9ng chuy\u1ec3n nh\u1eefng email ch\u1ee9a t\u1eeb kh\u00f3a \u201cdirect deposit\u201d ho\u1eb7c \u201cbank\u201d v\u00e0o th\u01b0 m\u1ee5c \u1ea9n, \u0111\u1ea3m b\u1ea3o n\u1ea1n nh\u00e2n kh\u00f4ng th\u1ea5y \u0111\u01b0\u1ee3c c\u00e1c email trao \u0111\u1ed5i t\u1eeb b\u1ed9 ph\u1eadn HR v\u1ec1 y\u00eau c\u1ea7u thay \u0111\u1ed5i th\u00f4ng tin ng\u00e2n h\u00e0ng.<\/p>\n<p>Sau \u0111\u00f3, tin t\u1eb7c m\u1ea1o danh nh\u00e2n vi\u00ean \u0111\u1ec3 g\u1eedi email cho b\u1ed9 ph\u1eadn HR ho\u1eb7c t\u00e0i ch\u00ednh, y\u00eau c\u1ea7u thay \u0111\u1ed5i th\u00f4ng tin t\u00e0i kho\u1ea3n nh\u1eadn l\u01b0\u01a1ng.<\/p>\n<figure class=\"wp-block-image size-large aligncenter\" style=\"text-align: center; margin: 1.5em 0;\"><img decoding=\"async\" style=\"border-radius: 8px; border: 1px solid #e5e7eb; max-width: 100%; max-height: 560px; width: auto; height: auto; display: inline-block;\" src=\"https:\/\/microsoft.cmctelecom.vn\/wp-content\/uploads\/2026\/05\/dcd99afacd.webp\" alt=\"M\u1eabu email l\u1eeba \u0111\u1ea3o c\u1ee7a Storm-2755 y\u00eau c\u1ea7u thay \u0111\u1ed5i th\u00f4ng tin nh\u1eadn l\u01b0\u01a1ng\" \/><\/figure>\n<p>Trong m\u1ed9t s\u1ed1 tr\u01b0\u1eddng h\u1ee3p, khi kh\u00f4ng th\u1ec3 thuy\u1ebft ph\u1ee5c HR qua email, tin t\u1eb7c \u0111\u00e3 tr\u1ef1c ti\u1ebfp \u0111\u0103ng nh\u1eadp v\u00e0o c\u00e1c ph\u1ea7n m\u1ec1m SaaS qu\u1ea3n l\u00fd nh\u00e2n s\u1ef1 nh\u01b0 Workday b\u1eb1ng t\u00e0i kho\u1ea3n b\u1ecb chi\u1ebfm \u0111o\u1ea1t \u0111\u1ec3 t\u1ef1 thay \u0111\u1ed5i th\u00f4ng tin ng\u00e2n h\u00e0ng. K\u1ebft qu\u1ea3 l\u00e0 kho\u1ea3n l\u01b0\u01a1ng c\u1ee7a nh\u00e2n vi\u00ean \u0111\u00e3 b\u1ecb chuy\u1ec3n v\u00e0o t\u00e0i kho\u1ea3n c\u1ee7a k\u1ebb t\u1ea5n c\u00f4ng.<\/p>\n<h2>Khuy\u1ebfn ngh\u1ecb t\u1eeb Microsoft \u0111\u1ec3 ph\u00f2ng ch\u1ed1ng t\u1ea5n c\u00f4ng AiTM<\/h2>\n<p>\u0110\u1ec3 b\u1ea3o v\u1ec7 t\u1ed5 ch\u1ee9c tr\u01b0\u1edbc c\u00e1c chi\u1ebfn d\u1ecbch t\u1ea5n c\u00f4ng AiTM t\u01b0\u01a1ng t\u1ef1 nh\u01b0 c\u1ee7a Storm-2755, Microsoft khuy\u1ebfn ngh\u1ecb c\u00e1c doanh nghi\u1ec7p th\u1ef1c hi\u1ec7n c\u00e1c bi\u1ec7n ph\u00e1p sau:<\/p>\n<ul>\n<li><strong>Tri\u1ec3n khai MFA kh\u00e1ng l\u1eeba \u0111\u1ea3o (Phishing-Resistant MFA):<\/strong> C\u00e1c ph\u01b0\u01a1ng th\u1ee9c MFA truy\u1ec1n th\u1ed1ng nh\u01b0 m\u00e3 SMS, OTP qua email hay th\u00f4ng b\u00e1o \u0111\u1ea9y (push notification) ng\u00e0y c\u00e0ng k\u00e9m hi\u1ec7u qu\u1ea3. Doanh nghi\u1ec7p n\u00ean chuy\u1ec3n sang c\u00e1c ph\u01b0\u01a1ng ph\u00e1p m\u1ea1nh m\u1ebd h\u01a1n nh\u01b0 FIDO2\/WebAuthN \u0111\u1ec3 ch\u1ed1ng l\u1ea1i vi\u1ec7c \u0111\u00e1nh c\u1eafp token.<\/li>\n<li><strong>S\u1eed d\u1ee5ng Ch\u00ednh s\u00e1ch Truy c\u1eadp c\u00f3 \u0111i\u1ec1u ki\u1ec7n (Conditional Access Policies):<\/strong> Thi\u1ebft l\u1eadp c\u00e1c ch\u00ednh s\u00e1ch \u0111\u1ec3 qu\u1ea3n l\u00fd v\u00f2ng \u0111\u1eddi c\u1ee7a phi\u00ean \u0111\u0103ng nh\u1eadp, y\u00eau c\u1ea7u ng\u01b0\u1eddi d\u00f9ng x\u00e1c th\u1ef1c l\u1ea1i khi c\u00f3 r\u1ee7i ro, gi\u00fap h\u1ea1n ch\u1ebf th\u1eddi gian t\u1ed3n t\u1ea1i c\u1ee7a c\u00e1c token b\u1ecb \u0111\u00e1nh c\u1eafp.<\/li>\n<li><strong>T\u1eadn d\u1ee5ng \u0110\u00e1nh gi\u00e1 Truy c\u1eadp Li\u00ean t\u1ee5c (Continuous Access Evaluation &#8211; CAE):<\/strong> CAE cho ph\u00e9p c\u00e1c \u1ee9ng d\u1ee5ng h\u1ed7 tr\u1ee3 \u0111\u00e1nh gi\u00e1 l\u1ea1i token truy c\u1eadp g\u1ea7n nh\u01b0 theo th\u1eddi gian th\u1ef1c khi c\u00f3 thay \u0111\u1ed5i v\u1ec1 r\u1ee7i ro, gi\u00fap thu h\u1ed3i quy\u1ec1n truy c\u1eadp ngay l\u1eadp t\u1ee9c khi ph\u00e1t hi\u1ec7n b\u1ea5t th\u01b0\u1eddng.<\/li>\n<li><strong>S\u1eed d\u1ee5ng c\u00e1c c\u00f4ng c\u1ee5 b\u1ea3o m\u1eadt t\u1ef1 \u0111\u1ed9ng:<\/strong> K\u00edch ho\u1ea1t <a href=\"https:\/\/www.microsoft.com\/security\/business\/microsoft-defender\">Microsoft Defender<\/a> \u0111\u1ec3 t\u1ef1 \u0111\u1ed9ng ng\u0103n ch\u1eb7n c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng, thu h\u1ed3i token theo th\u1eddi gian th\u1ef1c v\u00e0 gi\u00e1m s\u00e1t c\u00e1c h\u00e0nh vi b\u1ea5t th\u01b0\u1eddng. <a href=\"https:\/\/www.microsoft.com\/en-us\/security\/business\/ai-machine-learning\/microsoft-security-copilot\">Microsoft Security Copilot<\/a> c\u0169ng c\u00f3 th\u1ec3 h\u1ed7 tr\u1ee3 c\u00e1c \u0111\u1ed9i ng\u0169 b\u1ea3o m\u1eadt ph\u00e2n t\u00edch v\u00e0 \u1ee9ng ph\u00f3 v\u1edbi s\u1ef1 c\u1ed1 hi\u1ec7u qu\u1ea3 h\u01a1n.<\/li>\n<li><strong>T\u0103ng c\u01b0\u1eddng gi\u00e1m s\u00e1t v\u00e0 c\u1ea3nh b\u00e1o:<\/strong> T\u1ea1o c\u00e1c c\u1ea3nh b\u00e1o cho nh\u1eefng h\u00e0nh vi \u0111\u00e1ng ng\u1edd nh\u01b0 vi\u1ec7c t\u1ea1o c\u00e1c quy t\u1eafc inbox m\u1edbi, \u0111\u1eb7c bi\u1ec7t l\u00e0 c\u00e1c quy t\u1eafc t\u1ef1 \u0111\u1ed9ng x\u00f3a ho\u1eb7c di chuy\u1ec3n email.<\/li>\n<li><strong>N\u00e2ng cao nh\u1eadn th\u1ee9c ng\u01b0\u1eddi d\u00f9ng:<\/strong> T\u1ed5 ch\u1ee9c c\u00e1c chi\u1ebfn d\u1ecbch di\u1ec5n t\u1eadp t\u1ea5n c\u00f4ng l\u1eeba \u0111\u1ea3o (phishing simulation) \u0111\u1ec3 c\u1ea3i thi\u1ec7n kh\u1ea3 n\u0103ng nh\u1eadn bi\u1ebft v\u00e0 gi\u1ea3m thi\u1ec3u nguy c\u01a1 b\u1ecb \u0111\u00e1nh c\u1eafp th\u00f4ng tin \u0111\u0103ng nh\u1eadp c\u1ee7a nh\u00e2n vi\u00ean.<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Ng\u00e0y 9\/4\/2026, c\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u t\u1eeb \u0111\u1ed9i ng\u0169 DART (Detection and Response Team) c\u1ee7a Microsoft \u0111\u00e3 c\u00f4ng b\u1ed1 ph\u00e2n t\u00edch v\u1ec1 Storm-2755, m\u1ed9t nh\u00f3m tin t\u1eb7c m\u1edbi c\u00f3 \u0111\u1ed9ng c\u01a1 t\u00e0i ch\u00ednh. Nh\u00f3m n\u00e0y \u0111ang th\u1ef1c hi\u1ec7n c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng &#8220;c\u01b0\u1edbp l\u01b0\u01a1ng&#8221; (payroll pirate) nh\u1eafm v\u00e0o nh\u00e2n vi\u00ean, s\u1eed d\u1ee5ng k\u1ef9 thu\u1eadt tinh&#8230;<\/p>","protected":false},"author":15,"featured_media":11648,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-11650","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ms-blogs"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.7 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Microsoft: Tin t\u1eb7c qua m\u1eb7t MFA, chi\u1ebfm t\u00e0i kho\u1ea3n \u0111\u1ec3 chuy\u1ec3n h\u01b0\u1edbng l\u01b0\u01a1ng nh\u00e2n vi\u00ean | CMC Telecom<\/title>\n<meta name=\"description\" content=\"\u0110\u1ed1i t\u00e1c Tier-1 Solutions 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