MEDIUMVulnerability
Global

SilverFox Targets Japanese Manufacturer with 3-Driver BYOVD Chain and ValleyRAT

·Source: The Hacker News

Updated:

Executive Summary

The Chinese cybercrime group known as Silver Fox has been observed using new drivers as part of bring your own vulnerable driver (BYOVD) attacks targeting a Japanese organization in the industrial manufacturing sector to ultimately deliver ValleyRAT (aka Winos 4.0) for persistent remote access. "In this campaign, the group combines new vulnerable-driver abuse, newly observed abuse of legitimate

Analysis

The Chinese cybercrime group known as Silver Fox has been observed using new drivers as part of bring your own vulnerable driver (BYOVD) attacks targeting a Japanese organization in the industrial manufacturing sector to ultimately deliver ValleyRAT (aka Winos 4.0) for persistent remote access. "In this campaign, the group combines new vulnerable-driver abuse, newly observed abuse of legitimate
Source Attribution

Originally published by The Hacker News on Jul 30, 2026.

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