Resurgence of Voicemail-themed Phishing Attacks Targeting Key Industry Verticals in US

Summary

Since May 2022, ThreatLabz has been closely monitoring the activities of a threat actor which targets users in various US-based organizations with malicious voicemail-notification-themed emails in an attempt to steal their Office365 and Outlook credentials. The tactics, techniques, and procedures (TTPs) of this threat actor have a high overlap with a previous voicemail campaign that ThreatLabz analyzed in July 2020.

In this new instance of the campaign, the threat actor has targeted users in US-based organizations in specific verticals …

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