Cybercriminals Launch New BrasDex Android Trojan Concentrating on Brazilian Banking Customers | House Tech

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December 20, 2022ravie lakshmananBanking Malware / Cell Safety

BrasDex Android Trojan

The menace actors behind the Home windows banking malware often known as casbaneiro has been attributed as behind a brand new Android Trojan known as BrasDex which has been noticed focusing on Brazilian customers as a part of an ongoing cross-platform marketing campaign.

BrasDex incorporates a “complicated keylogging system designed to abuse Accessibility Companies to extract credentials particularly from a set of functions focusing on Brazil, in addition to a high-capacity Automated Switch System (ATS) engine,” ThreatFabric mentioned. in a report launched final week.

The Dutch safety agency mentioned that the command and management (C2) infrastructure used together with BrasDex can also be getting used to manage Casbaneiro, which is understood to assault banks and cryptocurrency providers in Brazil and Mexico.

The hybrid Android and Home windows malware marketing campaign is estimated to have led to 1000’s of infections so far.

cyber security

Posing as a banking app for Banco Santander, BrasDex can also be emblematic of a brand new development that includes abusing Android accessibility APIs to document keystrokes entered by victims, transferring away from the standard technique of assault overlays. to steal credentials and different private knowledge.

It’s also designed to seize account stability info after which use it to take over contaminated units and provoke fraudulent transactions programmatically.

One other notable facet of BrasDex is its singular deal with the PIX funds platform, which permits financial institution prospects in Brazil to generate income transfers merely utilizing their electronic mail addresses or cellphone numbers.

BrasDex Android Trojan
BrasDex Android Trojan

The ATS system at BrasDex is explicitly designed to abuse PIX expertise to carry out fraudulent transfers.

This isn’t the primary time that the moment funds ecosystem has been attacked by unhealthy actors. In September 2021, Verify Level detailed two Android malware households known as PixStealer and MalRhino that tricked customers into transferring all their account balances to at least one managed by an actor.

ThreatFabric’s investigation of BrasDex additionally allowed it to realize entry to the C2 panel utilized by legal operators to trace contaminated units and retrieve log knowledge extracted from Android telephones.

Panel C2, as is commonly the case, can also be getting used to manage a unique malware marketing campaign that compromises Home windows machines to deploy Casbaneiro, a Delphi-based monetary trojan.

This chain of assault employs phishing lures themed across the supply of packages purporting to be from Correios, a state-owned postal service, to trick recipients into executing the malware by means of a multi-stage course of.

Casbaneiro’s options run the everyday backdoor gamut permitting it to take over financial institution accounts, take screenshots, carry out keyloggers, hijack clipboard knowledge, and even perform as a malware clipper to hijack cryptographic transactions.

“Being unbiased and full malware households, BrasDex and Casbaneiro make a really harmful pairing, permitting the actor behind them to focus on Android and Home windows customers on a big scale,” ThreatFabric mentioned.

“The BrasDex case reveals the necessity for fraud detection and prevention mechanisms on buyer units: fraudulent funds made routinely with the assistance of ATS engines seem authentic to financial institution backends and fraud scoring engines, as they’re made by means of the identical system that’s typically utilized by prospects”.

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Cybercriminals Launch New BrasDex Android Trojan Targeting Brazilian Banking Users