Vultur Android Banking Trojan Returns with Upgraded Remote Control Capabilities | Cybersecurity

The Android banking trojan known as Vultur has resurfaced with a suite of new features and improved anti-analysis and detection evasion techniques, enabling its operators to remotely interact with a mobile device and harvest sensitive data.

“Vultur has also started masquerading more of its malicious activity by encrypting its C2 communication, using multiple encrypted payloads that are decrypted on the fly, and using the guise of legitimate applications to carry out its malicious actions,” NCC Group researcher Joshua Kamp said in a report published last week.

Vultur was first disclosed in early 2021, with the malware capable of leveraging Android’s accessibility services APIs to execute its malicious actions.

The malware has been observed to be distributed via trojanized dropper apps on the Google Play Store, masquerading as authenticator and productivity apps to trick unwitting users into installing them. These dropper apps are offered as part of a dropper-as-a-service (DaaS) operation called Brunhilda.

Other attack chains, as observed by NCC Group, involve the droppers being spread using a combination of SMS messages and phone calls – a technique called telephone-oriented attack delivery (TOAD) – to ultimately serve an updated version of the malware.

“The first SMS message guides the victim to a phone call,” Kamp said. When the victim calls the number, the fraudster provides the victim with a second SMS that includes the link to the dropper: a modified version of the [legitimate] McAfee Security app.”

The initial SMS message aims to induce a false sense of urgency by instructing the recipients to call a number…

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