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Spearphishing

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high threat

Silver Fox Spearphishing Campaign Targeting Japanese Firms During Tax Season

The Silver Fox threat actor is conducting a targeted spearphishing campaign against Japanese manufacturers and other businesses, exploiting the annual tax filing and organizational change season by sending emails containing malicious attachments that deploy ValleyRAT, leading to remote access, data theft, and persistence.

Silver Fox silverfox spearphishing valleyrat japan taxseason remoteaccesstrojan
2r 5t
medium advisory

RagaSerpent 'Tax Audit' Campaign Targeting Multiple Countries

The RagaSerpent cluster, also known as SideWinder-Adjacent, is conducting targeted attacks across multiple countries between 2025 and 2026, associated with a 'Tax Audit' themed campaign.

RagaSerpent SideWinder Tax Audit Spearphishing
2r 1t