An active malware campaign is targeting Thailand's healthcare sector, including Ministry of Health personnel and affiliated organizations. The operation leverages healthcare-themed spear-phishing lures distributed through malicious RAR archives containing obfuscated batch scripts and executable payloads. The infection chain employs multiple stages of obfuscation, GitHub-hosted payload delivery, and persistence mechanisms. The final payload is a Python-based information stealer designed to harvest browser credentials, session data, and cookies, with exfiltration attempts through Telegram Bot API. The campaign demonstrates sophisticated tradecraft including Rouki-obfuscated batch loaders, Startup folder persistence, and bundled Python interpreters. Active operational window spans from April to June 2026, with all samples uploaded from Thailand.
Created: 2026-06-22
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