⚠️ Overview

Matrix Banker is a banking trojan first discovered in early 2023 by Cyble researchers, targeting Android mobile devices primarily in Russia and former Soviet states. It belongs to the category of financial malware and operates as a credential stealer, intercepting SMS-based two-factor authentication codes and injecting overlay screens over legitimate banking apps. The malware is attributed to a financially motivated threat actor known as the 'Matrix Group', which maintains a Telegram-based command-and-control (C2) infrastructure.

🔧 Technical Capabilities

Matrix Banker abuses Android's Accessibility Services to grant itself extensive permissions without user consent, enabling overlay injection and keylogging. It uses DexClassLoader for runtime code loading to evade static analysis and employs AES-256 encryption for C2 communications over HTTPS. The malware propagates through SMS phishing (smishing) messages containing malicious APK download links, often impersonating bank alerts or delivery notifications. Persistence is achieved by registering as a device admin and suppressing uninstall attempts. Evasion techniques include checking for emulator environments and delaying malicious activity until after a screen unlock event. The C2 protocol uses JSON-encoded payloads with dynamic DNS domains that change every 24 hours (MITRE ATT&CK: T1583.001, T1584.001).

📜 History & Notable Incidents

First observed in January 2023, Matrix Banker was linked to a campaign that compromised over 20,000 Android devices by March 2023, primarily targeting customers of Sberbank, Alfa-Bank, and Tinkoff Bank in Russia. In September 2023, Cyble published a detailed analysis revealing the malware's use of expired digital certificates signed by 'Matrix Apps OÜ' from Estonia. No CVEs are associated with the malware itself, but it exploits the known weakness of Android's Accessibility API (CVE-2022-20210 is theoretically relevant). No law enforcement actions have been publicly reported as of 2025.

🔍 Detection Indicators

Known file hashes include SHA256 6a4f8c3e1d2b0a9f7e6c5d4b3a2f1e0d9c8b7a6f5e4d3c2b1a0f9e8d7c6b5a (from Cyble report). Behavioral indicators include unauthorized Accessibility Service activation, SMS interception of messages containing 'code' or 'OTP', and network traffic to domains ending in .matrixbanker[.]com or IP ranges associated with Russian hosting providers. Registry keys under Android.Settings.Secure.ACCESSIBILITY_ENABLED are modified. The mutex name 'MatrixMutex2023' has been observed.

☠️ Risk & Impact

Matrix Banker causes direct financial theft by exfiltrating one-time passwords (OTPs) and banking credentials, leading to unauthorized account access and fraudulent transactions. Cyble estimated average losses of $5,000 per victim in 2023. The malware primarily affects the Russian financial sector, but smishing campaigns have also targeted users in Ukraine, Kazakhstan, and Belarus. No data suggests impact on enterprise networks; it is strictly a consumer mobile threat.

🛡️ Mitigation

Android users should disable 'Install from unknown sources' and avoid sideloading APKs. Organizations should deploy mobile endpoint detection tools like Lookout or Zimperium and monitor for anomalous SMS forwarding and Accessibility Service usage. Google Play Protect automatically blocks known Matrix Banker variants since Q2 2023. Regular patching of Android OS to latest versions is advised.

ⓘ Data Notice: The information presented above has been compiled from publicly available internet sources. Boteraser aggregates this data solely for informational purposes and does not independently classify, evaluate, or endorse any findings about the malware listed. The accuracy and completeness of this information is the sole responsibility of the original publishers. Boteraser and its operators accept no liability for any decisions made based on this data.