Tweaks Stealer Targets Roblox Users Through YouTube and Discord

IntroductionZscaler’s ThreatLabz recently discovered a new campaign distributing an infostealer called Tweaks (aka Tweaker) that targets Roblox users. Attackers are exploiting popular platforms, like YouTube and Discord, to distribute Tweaks to Roblox users, capitalizing on the ability of legitimate platforms to evade detection by web filter block lists that typically block known malicious servers. Attackers share malicious files disguised as Frames Per Second (FPS) optimization packages with users and, in turn, users infect their own systems with Tweaks malware.Given that 45% of Roblox users are under 13, it’s probable that the malware being circulated could extend to parents’ systems. Furthermore, with the proliferation of remote work, there’s a possibility of this malware infiltrating corporate devices (surreptitiously) used by children of employees. Not only does a successful infection leave Roblox account data vulnerable, but it may also compromise the data and device.In this blog, we analyze the Tweaks attack campaign and its technical characteristics.Key TakeawaysThe Tweaks or Tweaker stealer masquerades as a tool to enhance frames per second (FPS) for Roblox users that steals data in the background without the user’s knowledge.The attackers leverage YouTube by enticing users to watch videos on “How to increase FPS” that contain links to their Discord groups. Once users join these groups, the attackers provide them with links to malicious files disguised as game tweaks and modifications.The stealer is Powershell-based and exfiltrates sensitive data like user information, location, Wi-Fi profiles, and passwords, Roblox IDs, and in-game currency details.Once sensitive data is obtained, it is sent via a Discord webhook to the attacker-controlled server. ThreatLabz researchers discovered multiple attackers copying a “free” version of Tweaks and using it to sell “paid” versions. BackgroundWhy is FPS appealing to Roblox users?The Roblox game boasts a massive user base consisting of millions of players worldwide. Roblox offers a diverse range of games and experiences, allowing players to explore virtual worlds and engage in various activities. One feature that attracts Roblox players is the desire for an enhanced gaming experience, including improved FPS. Higher FPS can result in smoother gameplay, making it an appealing prospect for players seeking optimal performance. It’s not unusual for gamers to download optimization tools from popular platfor

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