Malicious Actors Manipulate SEO to Distribute Fake Microsoft Teams Installers

Cyberpress • December 9, 2025

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Fake Microsoft Teams Installers - A new campaign by the Chinese state-linked advanced persistent threat (APT) group Silver Fox.

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This article is one source in a clustered incident — the cluster page carries the summary, timeline and every other outlet covering it.

SEO Manipulation Campaign Distributes Fake Microsoft Teams Installers A cyber campaign initiated by the Chinese state-linked APT group Silver Fox is exploiting search engine optimization to distribute a malicious installer disguised as Microsoft Teams. This campaign, active since November 2025, targets organizations by directing users to a fake Microsoft Teams website to download a trojanized application that deploys the ValleyRAT malware. 3 sources 24

Extracted Entities

APT Groups (1)

Attack Types (1)