SEO Poisoning Targets Chinese Users via Fake Software
🛡️ In August 2025, FortiGuard Labs uncovered an SEO poisoning campaign that manipulated search rankings to lure Chinese-speaking users to lookalike download sites mimicking legitimate software, notably a DeepL spoof. Victims downloaded a bundled MSI installer that combined genuine application installers with malicious components (EnumW.dll, fragmented ZIPs and a packed vstdlib.dll) and used anti-analysis, timing checks and parent-process validation to evade sandboxes. The in-memory payload implements Heartbeat, Monitor and C2 modules, exfiltrates system and user data, and supports plugins for screen capture, keylogging, Telegram proxy removal and crypto wallet targeting. Fortinet detections and network protections are updated; organizations are advised to apply patches, scan affected systems, and contact incident response if compromise is suspected.
