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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