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

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

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https://thehackernews.com/2026/07/silverfox-targets-japanese-manufacturer.html

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https://thehackernews.com/2026/07/silverfox-targets-japanese-manufacturer.html

id: 2308
uid: tXjEb
insdate: 2026-07-30 11:10:08
title: SilverFox Targets Japanese Manufacturer with 3-Driver BYOVD Chain and ValleyRAT
additional: 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
category: Cybersecurity
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guid: https://thehackernews.com/2026/07/silverfox-targets-japanese-manufacturer.html
source_url: https://thehackernews.com/2026/07/silverfox-targets-japanese-manufacturer.html
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