Iranian Infy APT Returns: 2025 Malware Campaign Exposes New Espionage Threats
In December 2025, the Iranian nation-state APT group known as Infy ("Prince of Persia") resurfaced after years of dormancy, launching a covert cyber espionage campaign using upgraded versions of its Foudre and Tonnerre malware. The attack targeted high-value individuals and organizations across Iran, Iraq, Turkey, India, Canada, and several European countries. Entry was achieved primarily via malicious Excel attachments in phishing campaigns, enabling long-term surveillance, data exfiltration, and direct access to encrypted communications such as Telegram chats. The attackers employed advanced tactics such as a Domain Generation Algorithm for resilient C2, RSA-based C2 validation, and selective victim targeting to remain undetected and persist in victim environments. The Infy resurgence illuminates how persistent APT actors adapt tools and methods for stealth operations, leveraging social engineering and technical innovation. This case illustrates the increasing threat of highly-targeted, identity-driven espionage attacks that undermine both personal privacy and organizational security.
Kill Chain
