Meduza Stealer is an information-stealing malware primarily targeting Windows systems, designed to harvest sensitive data such as login credentials, browsing histories, cookies, cryptocurrency wallets, and password manager data. It has advanced anti-detection mechanisms, allowing it to evade many antivirus programs. The malware is distributed through various means, including phishing emails and malicious links. It’s marketed on underground forums and Telegram channels.

First identified in March 2021, PureCrypter is a .NET-based loader that employs obfuscation techniques, such as SmartAssembly, to evade detection. It has been used to distribute malware families including AgentTesla, RedLine Stealer, and SnakeKeylogger. The malware is typically delivered through phishing campaigns and malicious downloads, often masquerading as legitimate files with extensions like .mp4 or .pdf. PureCrypter utilizes encryption and compression to conceal its payloads and can inject malicious code into legitimate processes to maintain persistence on the infected system.

PureLogs is a stealer that collects a wide range of data from infected systems, including browser data, crypto wallets, PC configuration details, etc. It is delivered by PureCrypter, another malware that belongs to the Pure malware family. PureLogs is distributed based on a subscription model, allowing any threat actor to utilize it in their attacks.

Stealers are a group of malicious software that are intended for gaining unauthorized access to users’ information and transferring it to the attacker. The stealer malware category includes various types of programs that focus on their particular kind of data, including files, passwords, and cryptocurrency. Stealers are capable of spying on their targets by recording their keystrokes and taking screenshots. This type of malware is primarily distributed as part of phishing campaigns.