Secret Blizzard Strikes Moscow with ApolloShadow

The Russian state-sponsored group Secret Blizzard is running a targeted cyber-espionage operation against diplomats in Moscow. By leveraging an adversary-in-the-middle (AiTM) position, likely made possible through cooperation with local internet service providers, they intercept network traffic and redirect victims to a deceptive captive portal. There, targets are tricked into downloading a fake Kaspersky Anti-Virus installer that silently drops ApolloShadow malware. This malware installs a rogue trusted root certificate, allowing the attackers to maintain long-term access and intercept encrypted communications. Secret Blizzard also uses stealthy techniques to map networks, evade defenses, and extract sensitive intelligence without being detected.