Infy is considered one of the longest-operating APT groups, with its origins traced back to at least 2004. Despite this longevity, it has largely avoided the spotlight compared with other Iranian-linked groups such as Charming Kitten or MuddyWater. Earlier research attributed Infy’s attacks to a relatively focused toolkit built around two primary malware families: Foudre, a downloader and reconnaissance tool, and Tonnerre, a secondary implant used for deeper system compromise and data exfiltration. These tools are believed to be distributed primarily through phishing campaigns.
Recent analysis from SafeBreach reveals a previously undocumented campaign targeting organizations and individuals across multiple regions, including Iran, Iraq, Turkey, India, Canada, and parts of Europe. The operation relies on updated versions of both Foudre and Tonnerre, with the most recent Tonnerre variant observed in September 2025. Researchers noted changes in initial infection methods, with attackers shifting away from traditional malicious macros toward embedding executables directly within Microsoft Excel documents to initiate malware deployment.
One of the most distinctive aspects of Infy’s current operations is its resilient command-and-control infrastructure. The malware employs a domain generation algorithm to rotate C2 domains regularly, reducing the likelihood of takedowns. Each domain is authenticated using an RSA-based verification process, ensuring that compromised systems only communicate with attacker-approved servers. SafeBreach researchers observed that the malware retrieves encrypted signature files daily to validate the legitimacy of its C2 endpoints.
Further inspection of the group’s infrastructure uncovered structured directories used for domain verification, logging communications, and storing exfiltrated data. Evidence also suggests the presence of mechanisms designed to support malware updates, indicating ongoing development and maintenance of the toolset.
The latest version of Tonnerre introduces another notable feature by integrating Telegram as part of its control framework. The malware is capable of interacting with a specific Telegram group through its C2 servers, allowing operators to issue commands and collect stolen data. Access to this functionality appears to be selectively enabled for certain victims, reinforcing the targeted nature of the campaign.
SafeBreach researchers also identified multiple legacy malware variants associated with Infy’s earlier operations between 2017 and 2020, highlighting a pattern of continuous experimentation and adaptation. Contrary to assumptions that the group had gone dormant after 2022, the new findings indicate sustained activity and operational maturity over the past several years.
The disclosure coincides with broader research into Iranian cyber operations, including analysis suggesting that some threat groups operate with structured workflows resembling formal government departments. Together, these findings reinforce concerns that Infy remains a persistent espionage threat with evolving technical capabilities and a long-term strategic focus.
