Recent Attack Activity Analysis Using North Korea-Related Lures

APT-C-06 (Darkhotel) is an APT organization that has been active since at least 2007, targeting corporate executives, defense industries, and electronics sectors. In April 2026, the group launched phishing attacks using a decoy document titled 'North Korean Central Television Real-time Broadcasting Program Instructions.' The document instructs users to download an application for watching North Korean Central Television. By late May, attacks evolved to deliver malicious MSI files through phishing emails. These MSI files execute VBS code that creates scheduled tasks to download and execute PowerShell scripts, which then retrieve subsequent payloads. The malware employs ChaCha20 encryption and ultimately deploys shellcode. PowerShell has become a high-frequency component in APT-C-06's attack chain since 2025, handling payload downloads and persistence mechanisms.

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