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BTR Reforged: Weaponizing Defender’s Remediation Driver as a Kernel Operation Primitive

📅 August 23, 2026 📰 research.checkpoint.com 🔍 0 CVE(s) referenced

A legitimate, Microsoft-signed Windows Defender driver (BTR.sys) can be weaponized to perform arbitrary kernel-level file and registry operations, enabling stealthy EDR/AV bypass and advanced attacker persistence without exploiting vulnerabilities.

unclassified

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