Android Malware BRATA Wipes Your Device After Stealing Data

The Android malware known as BRATA has added new and dangerous features to its latest version, including GPS tracking, the capacity to use multiple communication channels, and a function that performs a factory reset on the device to wipe all traces of malicious activity. BleepingComputer reports: BRATA was first spotted by Kaspersky back in 2019 as an Android RAT (remote access tool) that mainly targeted Brazilian users. In December 2021, a report by Cleafy underscored the emergence of the malware in Europe, where it was seen targeting e-banking users and stealing their credentials with the involvement of fraudsters posing as bank customer support agents. Analysts at Cleafy continued to monitor BRATA for new features, and in a new report published today, illustrate how the malware continues to evolve.

The latest versions of the BRATA malware now target e-banking users in the UK, Poland, Italy, Spain, China, and Latin America. Each variant focuses on different banks with dedicated overlay sets, languages, and even different apps to target specific audiences. The authors use similar obfuscation techniques in all versions, such as wrapping the APK file into an encrypted JAR or DEX package. This obfuscation successfully bypasses antivirus detections. On that front, BRATA now actively seeks signs of AV presence on the device and attempts to delete the detected security tools before proceeding to the data exfiltration step.

The best way to avoid being infected by Android malware is to install apps from the Google Play Store, avoid APKs from shady websites, and always scan them with an AV tool before opening. During installation, pay close attention to the requested permissions and avoid granting any that appear unnecessary for the app's core functionality. Finally, monitor battery consumption and network traffic volumes to identify any inexplicable spikes that may be attributed to malicious processes running in the background.

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