Winos 4.0 Spreads via Impersonation of Official Email to Target Users in Taiwan


In January 2025, FortiGuard Labs observed an attack that used Winos4.0, an advanced malware framework actively used in recent threat campaigns, to target companies in Taiwan.

According to a report released in November 2024, Winos4.0 was distributed through gaming-related applications, however, it spread via an email masquerading as from Taiwan’s National Taxation Bureau in the campaign in January 2025. The sender claimed that the malicious file attached was a list of enterprises scheduled for tax inspection and asked the receiver to forward the information to their company’s treasurer.

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Source: Fortinet


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