The phishing emails sent by APT29 masqueraded as administrative notices related to various embassies and utilized legitimate but co-opted email addresses to send emails and Atlassian’s Trello service for command and control (C2).
These phishing emails were similar to previous Nobelium phishing campaigns in 2021 as they targeted diplomatic organizations, used ROOTSAW (publicly known as EnvyScout) to deliver additional payloads, and misused Firebase or DropBox for C2.
The misuse of legitimate webservices such as Trello, Firebase, or DropBox is likely an attempt to make detection or remediation harder.
An operational shift was observed when APT29 moved from deploying BEATDROP, which used a third-party cloud service to retrieve BEACON, to a simpler BEACON dropper that relied on co-opted infrastructure.
The subsequent sections will highlight the Tactics, Techniques, and Procedures as well as the tooling used by APT29 in their latest phishing campaigns.
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