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Dozens of ‘Luca Stealer’ Malware Samples Emerge After Supply Code Made Public

By Ionut Arghire on July 27, 2022

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Safety researchers have noticed an uptick in new Luca Stealer samples after the malware’s supply code was made public.

Coded in Rust, the malware was initially noticed in early July 2022, when its developer posted the supply code on cybercrime boards, probably in an effort to spice up their repute.

The developer has since expanded the knowledge stealer’s capabilities and likewise revealed the supply code on GitHub. Greater than 25 Luca Stealer samples have been noticed within the wild for the reason that code was made public, safety researchers at Cyble say.

Luca Stealer can extract data from quite a few Chromium-based browsers, but in addition targets messaging functions, crypto wallets, and different functions. Moreover, it has been up to date with file-stealing capabilities.

Based on Cyble, the stealer has been up to date at the least 3 times for the reason that starting of July, and its developer has shared data on how others can modify the malware and compile the supply code.

The researchers additionally be aware that a number of risk actors might need already engaged within the improvement of the stealer.

The risk is designed to gather system data – comparable to desktop setting, machine title, working system distribution, hostname, username, language, community interface title, variety of CPUs, reminiscence particulars, and working processes – and retailer it in a textual content file.

It could additionally steal login credentials, bank card knowledge, and cookies from over 30 Chromium-based browsers; knowledge from 10 chilly cryptocurrency wallets; knowledge from the browser extensions of password managers and crypto wallets; and knowledge from Steam, Telegram, and Uplay functions. Focused messaging functions embrace Discord, ICQ, Ingredient, and Skype.

Initially, Luca Stealer exfiltrated knowledge utilizing a Telegram bot, however the developer has since added help for Discord webhooks.

In the mean time, Luca Stealer solely targets Home windows programs, however Cyble’s researchers imagine that the malware developer could quickly leverage Rust’s cross-platform capabilities to launch variants concentrating on different platforms as nicely.

“Because the stealer is written in Rust and is launched totally free, we are able to count on it to be adopted by a number of risk actors the world over,” Cyble concludes.

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