Velvet Chollima APT Adversary Simulation
2025-05-23 • S3N4T0R •
https://medium.com/@S3N4T0R/velvet-chollima-apt-adversary-simulation-89c5159e7fc1
The simulation models a Velvet Chollima attack chain attributed in the excerpt to a January 2025 campaign against South Korean government officials, NGOs, government agencies, and media organizations across multiple regions. The described delivery starts with a spear-phishing email carrying a PDF attachment whose hidden hyperlink redirects victims to a fake CAPTCHA or device-registration page. The social-engineering step instructs users to run PowerShell as administrator and paste attacker-supplied code, leading to a reverse shell that connects to attacker infrastructure and enables remote command execution. The simulated payload also adds persistence through a Windows Run key, illustrating how ClickFix-style prompts can convert user interaction into remote access, data theft, and follow-on compromise.