Teams Social Engineering Campaign Drops A0Backdoor Malware

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Teams Social Engineering Campaign Drops A0Backdoor Malware

Esecurityplanet • March 10, 2026

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Microsoft Teams impersonation and social engineering tactics are being used in an ongoing campaign to deliver a stealthy malware payload known as ...

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This article is one source in a clustered incident — the cluster page carries the summary, timeline and every other outlet covering it.

Social Engineering Attack via Microsoft Teams Deploys A0Backdoor Malware Hackers are targeting employees in financial and healthcare sectors through Microsoft Teams, using social engineering tactics to gain remote access via Windows Quick Assist. The attackers deploy a new malware family called A0Backdoor after convincing employees they are IT staff assisting with spam messages. This campaign is linked to the financially motivated group Blitz Brigantine. 15 sources 55

Extracted Entities

Attack Types (1)

Campaigns (1)

Teams Social Engineering Campaign

Malware (1)

Tools (1)

Microsoft Teams