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Backdoors Discovered on Counterfeit Android Telephones

By Ionut Arghire on August 23, 2022

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Russian cybersecurity agency Physician Internet has recognized a number of backdoors on the system partitions of a number of Android units which can be counterfeit variations of standard telephones.

The recognized smartphones – all pretending to be standard brand-name fashions resembling P48professional, Redmi Be aware 8, Be aware30u, and Mate40 – are funds telephones powered by an out of date working system model (Android 4.4.2), whereas pretending to run a newer platform iteration.

Operating an older Android model represents in itself a safety danger, contemplating the massive variety of vulnerabilities that Google has been addressing each month over the previous a number of years.

On prime of that, Physician Internet found on the system partitions of those units modified libraries designed to launch malware when in use by any software.

Particularly, the libcutils.so library was modified to launch a trojan from libmtd.so when used. If utilized by WhatsApp, WhatsApp Enterprise, Settings, or cellphone system apps, the trojan would proceed with dropping a second-stage payload.

The principle function of the dropped payload, which Physician Internet detects as a backdoor, is to fetch extra malicious modules from a distant server and to execute them on the contaminated machine.

In accordance with Physician Internet, the malware and the modules have been designed in such a way that they turn out to be a part of the focused apps.

“In consequence, they acquire entry to the attacked apps’ information and may learn chats, ship spam, intercept and hearken to cellphone calls, and execute different malicious actions, relying on the performance of the downloaded modules,” the cybersecurity agency says.

Physician Internet additionally found that, ought to the wpa_supplicant system app (which controls wi-fi connections) be calling the modified library, the libmtd.so trojan library would begin an area server, to allow a shopper to attach and function within the ‘mysh’ console software.

In accordance with the safety agency, the malicious purposes have been dropped on the contaminated units by way of a ‘FakeUpdates’ trojan sometimes embedded into system elements resembling software program liable for firmware updates, the system’s graphical interface, or the default settings app.

“Whereas in operation, these trojans execute numerous Lua scripts that they significantly use to obtain and set up different software program,” Physician Internet notes.

Associated: ‘Octo’ Android Trojan Permits Cybercrooks to Conduct On-Machine Fraud

Associated: SharkBot Android Malware Continues Popping Up on Google Play

Associated: ‘Xenomorph’ Android Trojan Targets 56 Banking Functions

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