{"id":6119,"date":"2024-04-23T10:01:17","date_gmt":"2024-04-23T01:01:17","guid":{"rendered":"https:\/\/m365jp.net\/?p=6119"},"modified":"2024-04-23T10:11:17","modified_gmt":"2024-04-23T01:11:17","slug":"servicerestored-dz783223-microsoft-defender-xdr-users-may-see-false-positive-detections-in-microsoft-defender-for-endpoint","status":"publish","type":"post","link":"https:\/\/m365jp.net\/index.php\/2024-04-23-servicerestored-dz783223-microsoft-defender-xdr-users-may-see-false-positive-detections-in-microsoft-defender-for-endpoint","title":{"rendered":"[serviceRestored] DZ783223 | Microsoft Defender XDR | Users may see false positive detections in Microsoft Defender for Endpoint"},"content":{"rendered":"
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DZ783223 | Microsoft Defender XDR | Users may see false positive detections in Microsoft Defender for Endpoint<\/th>\n<\/tr>\n<\/tbody>\n<\/table>\n
\n\n\n\n\n\n\n\n\n\n\n
Status<\/th>\nserviceRestored<\/td>\n<\/tr>\n
Classification<\/th>\nadvisory<\/td>\n<\/tr>\n
User Impact<\/th>\nUsers may have seen false positive detections in Microsoft Defender for Endpoint.<\/td>\n<\/tr>\n
Last Updated<\/th>\n04\/23\/2024 00:17:08<\/td>\n<\/tr>\n
Start Time<\/th>\n04\/19\/2024 11:00:00<\/td>\n<\/tr>\n
End Time<\/th>\n04\/22\/2024 22:20:00<\/td>\n<\/tr>\n
Latest Message<\/th>\nTitle: Users may see false positive detections in Microsoft Defender for Endpoint<\/p>\n

User impact: Users may have seen false positive detections in Microsoft Defender for Endpoint.<\/p>\n

More info: This issue specifically concerned false positive detections for Trojan:Script\/Wacatac.B!ml, Trojan:Win32\/Wacatac.B!ml, Program:Win32\/Wacapew.C!ml, and PUA:Win32\/Puwaders.C!ml.<\/p>\n

Final status: We’ve confirmed the deployment of our fix has completed and impact has been resolved for all users. <\/p>\n

Scope of impact: This issue may have affected any user reviewing detections in Microsoft Defender for Endpoint.<\/p>\n

Start time: Monday, April 22, 2024, at 11:00 AM UTC<\/p>\n

End time: Monday, April 22, 2024, at 10:20 PM UTC<\/p>\n

Root cause: A misconfiguration in our machine learning model resulted in these false positive detections.<\/p>\n

Next steps:
– We’re continuing to investigate the misconfiguration in our machine learning model to better understand how impact manifested and prevent similar future occurrences.<\/td>\n<\/tr>\n

Machine Translation<\/th>\n\u30bf\u30a4\u30c8\u30eb: \u30e6\u30fc\u30b6\u30fc\u306b\u306f\u3001Microsoft Defender for Endpoint\u3067\u8aa4\u691c\u77e5\u304c\u8868\u793a\u3055\u308c\u308b\u5834\u5408\u304c\u3042\u308a\u307e\u3059<\/p>\n

\u30e6\u30fc\u30b6\u30fc\u3078\u306e\u5f71\u97ff: \u30e6\u30fc\u30b6\u30fc\u306b\u306f\u3001Microsoft Defender for Endpoint\u3067\u8aa4\u691c\u77e5\u304c\u898b\u3089\u308c\u305f\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n

\u8a73\u7d30\u60c5\u5831: \u3053\u306e\u554f\u984c\u306f\u3001\u7279\u306b Trojan:Script\/Wacatac.B!ml\u3001Trojan:Win32\/Wacatac.B!ml\u3001Program:Win32\/Wacapew.C!ml\u3001PUA:Win32\/Puwaders.C!ml \u306e\u8aa4\u691c\u77e5\u306b\u95a2\u3059\u308b\u3082\u306e\u3067\u3059\u3002<\/p>\n

\u6700\u7d42\u30b9\u30c6\u30fc\u30bf\u30b9: \u4fee\u6b63\u30d7\u30ed\u30b0\u30e9\u30e0\u306e\u30c7\u30d7\u30ed\u30a4\u304c\u5b8c\u4e86\u3057\u3001\u3059\u3079\u3066\u306e\u30e6\u30fc\u30b6\u30fc\u3078\u306e\u5f71\u97ff\u304c\u89e3\u6c7a\u3055\u308c\u305f\u3053\u3068\u3092\u78ba\u8a8d\u3057\u307e\u3057\u305f\u3002<\/p>\n

\u5f71\u97ff\u7bc4\u56f2: \u3053\u306e\u554f\u984c\u306f\u3001Microsoft Defender for Endpoint\u3067\u691c\u51fa\u3092\u78ba\u8a8d\u3057\u3066\u3044\u308b\u30e6\u30fc\u30b6\u30fc\u306b\u5f71\u97ff\u3092\u4e0e\u3048\u305f\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n

\u958b\u59cb\u6642\u523b: 2024 \u5e74 4 \u6708 22 \u65e5 (\u6708) 11:00 AM UTC<\/p>\n

\u7d42\u4e86\u6642\u523b: 2024 \u5e74 4 \u6708 22 \u65e5 (\u6708) \u5348\u5f8c 10 \u6642 20 \u5206 (UTC)<\/p>\n

\u6839\u672c\u539f\u56e0: \u6a5f\u68b0\u5b66\u7fd2\u30e2\u30c7\u30eb\u306e\u69cb\u6210\u30df\u30b9\u306b\u3088\u308a\u3001\u3053\u308c\u3089\u306e\u8aa4\u691c\u77e5\u304c\u767a\u751f\u3057\u307e\u3057\u305f\u3002<\/p>\n

\u6b21\u306e\u30b9\u30c6\u30c3\u30d7:
– \u6a5f\u68b0\u5b66\u7fd2\u30e2\u30c7\u30eb\u306e\u8a2d\u5b9a\u30df\u30b9\u3092\u5f15\u304d\u7d9a\u304d\u8abf\u67fb\u3057\u3001\u5f71\u97ff\u304c\u3069\u306e\u3088\u3046\u306b\u73fe\u308c\u305f\u304b\u3092\u3088\u308a\u3088\u304f\u7406\u89e3\u3057\u3001\u540c\u69d8\u306e\u5c06\u6765\u306e\u767a\u751f\u3092\u9632\u6b62\u3057\u3066\u3044\u307e\u3059\u3002<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

DZ783223 | Microsoft Defender XDR | Users may see false positive detections in Microsoft Defender for Endpoint […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-6119","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/posts\/6119","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/comments?post=6119"}],"version-history":[{"count":0,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/posts\/6119\/revisions"}],"wp:attachment":[{"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/media?parent=6119"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/categories?post=6119"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/tags?post=6119"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}