In December 2025 and January 2026, BI.ZONE Threat Intelligence detected malicious activity by a new cluster Vortex Werewolf (SkyCloak). The attacks targeted Russian government and defense organizations.
BI.ZONE researchers findings indicate that the adversary used phishing emails to deliver malware to the target systems. Victims received messages containing a download link disguised as a Telegram file‑sharing URL. Clicking the link triggered the download of two archives—one with a malicious LNK file and another with multiple files, including a PowerShell script. A successful compromise resulted in the installation of Tor and OpenSSH, as well as the configuration of Tor‑enabled remote access over the RDP, SMB, SFTP, and SSH protocols.
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Source: BI.ZONE
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