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ATMZombie Muito Forte de Israel Banks, Utiliza técnicas Proxy-Changing

Um fato curioso - bancos israelenses não têm sido alvo por malware bancário. Até agora. pesquisadores da Kaspersky descobriram recentemente o primeiro Trojan bancário fazendo exatamente isso, alvejando bancos israelenses. O cavalo de Tróia foi apelidado ATMZombie.

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ATMZombie applies the well-known proxy-changing technique to sniff out traffic to banking pages. After a series of malicious activities, victims’ money are retrieved from ATMs by the so-called money mules.

Mais sobre Malware ATM

How Does ATMZombie Work?

One of the methods employed by ATMZombie is known as proxy-changing and is widely used for inspections of HTTP packets. Essencialmente, proxy changes involve the modification of the browser’s proxy configurations and seizing the traffic between the client and the server. Nesse caso, proxy changing acts much like a man-in-the-middle type of attack.

Mais sobre bancários Botnets

Attackers also found a way to stream banking details and thus breaking HTTPS traffic by issuing their own certificate, embedded in the Trojan dropper and implemented in the root certification authority (CA) list on the victim’s computer.

De fato, proxy-changing is not a revolutionary technique in malware attacks. Como já mencionado, proxy-changing is all about modifying the browser’s proxy config files and replacing the browser’s default proxy auto-config files (or PAC files).

In the case of ATMZombie, the malicious PAC files channel the browser’s traffic through the attacker’s intermediary node.

Researchers describe the next stage of the attack as a manual mode stage because it is limited only to Israeli banks. This is due to a local service that enables the bank account owner to transfer money to others without bank accounts or credit cards.

Researchers Believe Attackers Are Locals

ATMZombie’s operators use stolen banking credentials to log into victims’ accounts and send small payments to their so-called “money mules”. The malware operators use the SMS transaction service deployed only by Israeli banks.

Mais sobre Stealing Banking Credentials

De acordo com a Kaspersky, several Israeli banks and hundreds of people have been attacked by the Trojan. The only good news here is that the method used by ATMZombie’s creators doesn’t allow them to withdraw big amounts of money. There isn’t a payment bigger than $750.

Having in mind that ATMZombie’s attacks are quite specific to the Israeli banking system, it is easy to assume that the criminals are also local. além disso, the employment of ATM money mules illustrates that the criminal group does not operate on international level. Cyber crime groups working internationally would not use money mules.

Milena Dimitrova

Milena Dimitrova

Um escritor inspirado e gerente de conteúdo que está com SensorsTechForum desde o início do projeto. Um profissional com 10+ anos de experiência na criação de conteúdo envolvente. Focada na privacidade do usuário e desenvolvimento de malware, ela acredita fortemente em um mundo onde a segurança cibernética desempenha um papel central. Se o senso comum não faz sentido, ela vai estar lá para tomar notas. Essas notas podem mais tarde se transformar em artigos! Siga Milena @Milenyim

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