ValleyRAT Backdoor Hides in Signed Adware That Users Add to Antivirus Exclusions

The threat actor known as Silver Fox has been observed distributing the ValleyRAT backdoor disguised as a signed Chinese adware application, running the malware under a trusted process to slip past users who add such software to their antivirus exclusions.

Russian cybersecurity vendor Kaspersky said the attackers built the disguise around QN Wallpaper, a genuine Chinese desktop-wallpaper tool

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https://thehackernews.com/2026/08/valleyrat-backdoor-hides-in-signed.html

id: 2808
uid: fcKYi
insdate: 2026-08-31 13:10:06
title: ValleyRAT Backdoor Hides in Signed Adware That Users Add to Antivirus Exclusions
additional: The threat actor known as Silver Fox has been observed distributing the ValleyRAT backdoor disguised as a signed Chinese adware application, running the malware under a trusted process to slip past users who add such software to their antivirus exclusions.

Russian cybersecurity vendor Kaspersky said the attackers built the disguise around QN Wallpaper, a genuine Chinese desktop-wallpaper tool
category: Cybersecurity
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guid: https://thehackernews.com/2026/08/valleyrat-backdoor-hides-in-signed.html
source_url: https://thehackernews.com/2026/08/valleyrat-backdoor-hides-in-signed.html
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