![]() Figure 1 – Developer’s Post on Cybercrime Forum Figure 1 shows the post made by the developer on a cybercrime forum. After making multiple updates to the source code of the stealer on the cybercrime forum, the developer recently released the source code on GitHub, which can lead to wider usage and adoption of the stealer. The stealer can target multiple Chromium-based browsers, chat applications, crypto wallets, and gaming applications and has the added functionality of stealing victims’ files. The stealer has been updated thrice, and the malware developer is continuously adding multiple functionalities at the time of our analysis. ![]() The developer has also provided the steps to modify the stealer and compile the source code for ease of use. The developer of the stealer appears to be new on the cybercrime forum and likely leaked the source code of the stealer to build a reputation for themselves. Rust is rapidly becoming one of malware developers’ most preferred programming languages because of its versatility and evasion capabilities. We have already witnessed over 25 samples based on this source code present in the wild. Rust-based Malware Targeting Crypto Usersĭuring a routine threat-hunting exercise, Cyble Research Labs discovered an unknown Rust-based stealer, which we have dubbed “Luca Stealer.” The source code of this stealer was leaked on a popular cybercrime forum for free on July 3, 2022.
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