Mobile Banking Trojans Expand Capabilities: 66% Now Enable Full Device Takeover

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Mobile banking trojans have significantly expanded their capabilities, with 66% of malware families now offering full device control and 45% enabling financial extortion through ransomware, according to Zimperium’s zLabs research team.

Report Findings and Key Statistics

The 2026 Mobile Banking Heist Report highlights a marked escalation in the complexity and reach of mobile banking threats. Analysis of 34 active malware families targeting 1,243 financial brands across 90 countries showed a 56% increase in Android banking trojan attacks in 2025. The number of unique malware installation packages surged to 255,090, a 271% year-over-year rise.

Shift in Malware Tactics

The report emphasized a shift from traditional credential theft to advanced transaction manipulation and device-level control. Modern malware now initiates fraudulent transactions directly from user devices, bypassing conventional detection methods. This is achieved through remote control features that exploit accessibility services to simulate user interactions, often masked by overlays or black screens to conceal malicious activity.

Prevalent Techniques

Session cookie theft, brand-impersonating overlays, and NFC relay attacks also saw increased prevalence, with these techniques becoming more accessible to less-skilled threat actors via malware-as-a-service (MaaS) platforms.

Malware Family Analysis

Zimperium noted that 25 out of 38 analyzed malware families—66% of the total—now enable full device control, while 76% provide transaction takeover capabilities. Financial extortion, including ransomware modules that encrypt mobile data and demand cryptocurrency payments, was present in 45% of cases.

Top Targeting Malware

The top three malware families—TsarBot, CopyBara, and Hook—targeted 60% of global financial apps, with TsarBot alone affecting 711 banking applications and 90 fintech services like cryptocurrency wallets.

Regional Threats and Trends

North America faced significant targeting from Godfather and Teabot malware, which focus on device takeover and session manipulation to bypass strong authentication measures. The report also linked advancements in mobile banking malware to artificial intelligence, particularly large language models (LLMs), which simplify reverse engineering of targeted apps.

AI and Code Vulnerabilities

Over 60% of mobile banking applications lack basic code protection, allowing attackers to analyze API structures, authentication logic, and transaction workflows. AI is also used to create deepfakes that bypass biometric and eKYC safeguards, as well as to generate more sophisticated branded overlays for credential theft.

Recommendations for Organizations

Experts emphasized the need for organizations to treat mobile devices as high-risk endpoints. Recommendations include deploying mobile threat defense solutions that detect behavioral anomalies such as overlay abuse, accessibility service misuse, and suspicious command-and-control communications. Relying solely on signature-based detection is no longer sufficient, given the increasing automation and evasion capabilities of modern malware.

Future Threat Landscape

The report underscores the growing intersection between financial malware and surveillance tools, with banking trojans evolving into broader account takeover platforms. As mobile-first services and authentication methods expand, the report warns of further proliferation of these threats, necessitating proactive security measures to mitigate risks.

According to Zimperium’s zLabs research team, “Mobile banking trojans have significantly expanded their capabilities, with 66% of malware families now offering full device control and 45% enabling financial extortion through ransomware.”