Winos 4.0, a powerful command-and-control (C&C) malware framework, is being distributed through game-related applications, such as installation tools, speed boosters, and optimization utilities. The malware, rebuilt from the notorious Gh0st RAT, offers a wide range of capabilities, including remote access to compromised systems, making it a significant threat. The ongoing campaign has been primarily targeting Chinese-speaking users, utilizing black hat SEO tactics and platforms like Telegram to distribute the malicious applications. Once a user downloads and runs one of these applications, the malware begins a multi-stage infection process that sets up the foundation for deeper exploitation.
The initial stage of the attack involves the download of a fake BMP file from a remote server, which is then decoded into a malicious dynamic-link library (DLL) file. This DLL is responsible for further infection, downloading additional files that include executable binaries and other DLLs. One such file, named “libcef.dll,” is used to extract and execute more complex shellcode that establishes contact with the malware’s C&C server. Through this server, the malware receives further instructions and additional malicious payloads, which enable attackers to escalate control over the compromised system.
Winos 4.0 is designed to collect sensitive information from infected systems, with particular focus on cryptocurrency wallets. The malware targets cryptocurrency wallet extensions, such as OKX Wallet and MetaMask, to steal private data, including access keys and transaction information. Additionally, the malware harvests system data, clipboard content, and other sensitive information that can be exploited. This data is sent back to the attacker’s C&C server, where it can be used for malicious purposes, such as financial theft or espionage.
Beyond information theft, Winos 4.0 also provides attackers with the ability to control the infected system remotely. It can capture screenshots, upload sensitive documents, and perform other unauthorized actions. The malware’s versatility, combined with its use of game optimization apps as a delivery mechanism, underscores the growing trend of using popular and trusted software to disguise malicious activity. Gamers and users of game-related tools are particularly vulnerable, as they may unknowingly execute the malware while seeking to enhance their gaming experience. This highlights the importance of downloading software only from trusted sources to avoid falling victim to such sophisticated malware campaigns.
