The Mars stealer is a lightweight malicious program. Hence, it does not strain the compromised OS (Operating System), which means that there are no obvious signs of infection (e.g., significant decrease in response/operation time, system crashes, etc.).
Mars stealer can also extract browsing and file download histories, Internet cookies, autofill/autocomplete data, and stored passwords from the following browsers: Google Chrome, Chromium, Mozilla Firefox, Microsoft Edge and its Chromium version, Internet Explorer, Opera Stable, Opera GX, Opera Neon, Kometa, Amigo, Torch, Orbitum, Comodo Dragon, and many others.
FickerStealer, MoistStealer, Jupyter, RedLine Stealer, Little Thief, HackBoss, and Xenon are some examples of malicious programs with stealer-type abilities. Malware can have various harmful functionalities, which can be in different combinations.
Update 5 August 2022 - Threat actors are now using a fake Atomic Wallet website to distribute the Mars stealer. That fake website ("Download for Windows" button on it) downloads a ZIP file named "Atomic Wallet.zip". This archive file contains another file named "AtomicWallet-Setup.bat". This batch file executes PowerShell commands to infect computers with the Mars stealer.
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