Microsoft Defender's Own Driver Can Be Weaponized to Delete Security Software at Boot
Check Point Research has disclosed a technique that uses Microsoft Defender's own legitimately signed boot-time remediation driver to perform arbitrary kernel-level file and registry operations on Windows systems ranging from Windows 7 through Windows 11 25H2, with no software flaw exploited and no driver imported from outside the machine. The driver, BTR.sys (Boot Time Removal Tool), is a
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Check Point Research has disclosed a technique that uses Microsoft Defender's own legitimately signed boot-time remediation driver to perform arbitrary kernel-level file and registry operations on Windows systems ranging from Windows 7 through Windows 11 25H2, with no software flaw exploited and no driver imported from outside the machine. The driver, BTR.sys (Boot Time Removal Tool), is a
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The incident may affect operational continuity, asset safety or trust around Microsoft. Watch for verified scope and remediation.
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- The Hacker NewsSource primaire · Confirme · EN · 100%Microsoft Defender's Own Driver Can Be Weaponized to Delete Security Software at Boot ↗
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