When recipients click the link, they inadvertently download a ZIP file containing the GrapeLoader payload, which includes a legitimate PowerPoint executable and a DLL file.

APT29, also known as Cozy Bear, has initiated a sophisticated phishing campaign aimed at European diplomats, cleverly disguising advanced malware as invitations to wine-tasting events.

GrapeLoader employs advanced anti-analysis techniques, such as dynamic API resolving and memory-based shellcode execution, to evade detection by security measures.

GrapeLoader establishes persistence on infected machines by modifying registry keys and copying itself to new disk locations, while also gathering system information and communicating with a command-and-control server every minute.

This malware is designed to be more sophisticated than its predecessor, RootSaw, incorporating enhanced memory protections and stealth capabilities.

Check Point Research highlights that the targeted nature of this campaign complicates the detection and analysis of WineLoader's full capabilities, as the malware executes primarily in memory.

The emergence of GrapeLoader and the new variant of WineLoader indicates a significant increase in the sophistication of malware used by APT29, posing substantial challenges for detection and prevention efforts.

The evolving tactics and tools of APT29 necessitate heightened vigilance and improved defenses against their increasingly sophisticated cyber attacks.

In response to these escalating cyber threats, the European Union is considering measures to enhance cybersecurity and defense strategies to protect critical infrastructure and diplomatic missions.

Sergey Shykevich from Check Point noted the cleverness of the attackers' wine-themed approach, emphasizing the impersonation of a major EU ministry in their campaign.

This new tactic follows a previous campaign where APT29 targeted German politicians with malware hidden in fake dinner invitations, showcasing their ongoing strategy of deception.

While it remains unclear whether any phishing attempts have succeeded, the sophistication of the tactics employed indicates a serious threat to cybersecurity.