Sturnus
Intelligence Profile
According to ThreatFabric, Sturnus is a privately operated Android banking trojan. This malware supports a broad range of fraud-related capabilities, including full device takeover. A key differentiator is its ability to bypass encrypted messaging. By capturing content directly from the device screen after decryption, Sturnus can monitor communications via WhatsApp, Telegram, and Signal.
The trojan can harvest banking credentials through convincing fake login screens that replicate legitimate banking apps. In addition, it provides attackers with extensive remote control, enabling them to observe all user activity, inject text without physical interaction, and even black out the device screen while executing fraudulent transactions in the background—without the victim’s knowledge.
Threat Analysis
Sturnus is a advanced-sophistication threat actor of undetermined national origin, engaged in cyber operations with a primary motivation of espionage.
The group's espionage-oriented operations suggest a state-sponsored or state-aligned mandate, typically focused on stealing intellectual property, government secrets, or military intelligence. Targets are usually selected for strategic value rather than financial gain.
Classified as an advanced threat actor, Sturnus likely develops or acquires zero-day exploits, employs custom malware toolchains, and demonstrates long-term persistence capabilities — hallmarks of a well-resourced operation consistent with nation-state backing.