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Alert: WhatsApp Phishing Campaign Delivers Malware

ID: 5ab4ffb5-408c-5c77-aeb0-cb2da649b1ab

STIX ID: report--5ab4ffb5-408c-5c77-aeb0-cb2da649b1ab

Feed Name: KnowBe4 Blog

Threat Score
65/100

Date Published: 2026-04-21

Date Updated: 2026-04-28

Author: KnowBe4 Team

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Microsoft researchers report a WhatsApp-based phishing campaign that convinces users to run malicious VBS files which create hidden folders, deploy renamed legitimate Windows utilities to evade detection, retrieve payloads from trusted cloud providers (AWS, Tencent Cloud, Backblaze B2), and install MSI packages to maintain persistence; Microsoft recommends strengthening endpoint/script execution controls, monitoring cloud traffic and registry/UAC changes, blocking known C2, and user social-engineering training.

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