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Malware delivered via Microsoft Teams

ID: be9745f4-e074-506f-8763-83079dab5550

STIX ID: report--be9745f4-e074-506f-8763-83079dab5550

Feed Name: Zscaler Security Research Blog

Threat Score
65/100

Date Published: 2025-07-03

Date Updated: 2026-05-01

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**Executive Summary:** Zscaler reports a campaign in which attackers use compromised Microsoft Teams accounts to distribute trojan executables (e.g., W32/Trojan.BEIE-5677, Win32.Trojan.Wincen), leveraging SSL encryption and trust between users to evade detection; Zscaler recommends SSL inspection, Advanced Threat Protection, and cloud sandboxing to detect and block these payloads.

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