Cybercriminals bypass Windows security with driver-vulnerability exploit

The Scattered Spider cybercrime group has recently been observed attempting to deploy a malicious kernel driver using a tactic called bring your own vulnerable driver (BYOVD) — a warning to security professionals that the technique, which exploits longstanding deficiencies in Windows kernel protections, is still being employed by cybercriminals, according to cybersecurity company CrowdStrike.

In this latest BYOVD attack, which was observed and stopped by CrowdStrike’s Falcon security system, Scattered Spider attempted to deploy a malicious kernel driver via a vulnerability — CVE-2015-2291 in MITRE’s Common Vulnerability and Exposures program — in the Intel Ethernet diagnostics driver for Windows (iqvw64.sys).

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