A previously undocumented macOS infostealer has surfaced during our routine threat hunting. Malwarebytes Labs researchers initially tracked it as NukeChain, but shortly before publication, the malware’s operator panel became publicly visible, revealing its real name: Infiniti Stealer.
This malware is designed to steal sensitive data from Macs. It spreads through a fake CAPTCHA page that tricks users into running a command themselves: a technique known as ClickFix. Instead of exploiting a bug, it relies on social engineering. The final payload is written in Python and compiled with Nuitka, producing a native macOS binary. That makes it harder to analyze and detect than typical Python-based malware. To our knowledge, this is the first documented macOS campaign combining ClickFix delivery with a Nuitka-compiled Python stealer.
Read more…
Source: Malwarebytes Labs
Sign up for the Cyber Security Review Newsletter
The latest cyber security news and insights delivered right to your inbox
Related:
- Phone location data of top EU officials available for sale
November 4, 2025
Journalists in Europe found it was “easy” to spy on top European Union officials using commercially obtained location histories sold by data brokers, despite the continent having some of the strongest data protection laws in the world. EU officials said they’re “concerned” about the trade of citizen and officials’ mobile phone location data, and have issued ...
- SesameOp: Novel backdoor uses OpenAI Assistants API for command and control
November 3, 2025
Microsoft Incident Response – Detection and Response Team (DART) researchers uncovered a new backdoor that is notable for its novel use of the OpenAI Assistants Application Programming Interface (API) as a mechanism for command-and-control (C2) communications. Instead of relying on more traditional methods, the threat actor behind this backdoor abuses OpenAI as a C2 channel as ...
- University of Pennsylvania says it has called FBI over data breach
November 3, 2025
The University of Pennsylvania says it has called in the Federal Bureau of Investigation after offensive emails were distributed to alumni. In a statement, the university said that a data breach had affected “select information systems.” An email sent to University of Pennsylvania alumni on Friday and reviewed by Reuters showed that someone masquerading as the ...
- US government warns Linux CVE-2024-1086 flaw is now being exploited for ransomware attacks
November 3, 2025
The US government is warning that a Linux flaw introduced more than a decade ago – and fixed more than a year ago – is being actively used in ransomware attacks. In February 2014, a vulnerability was introduced into the Linux kernel via a commit. The bug was first disclosed in late January 2024, and described ...
- Chicago firm that resolves ransomware attacks had rogue workers carrying out their own hacks
November 2, 2025
Rogue employees of a Chicago company that specializes in negotiating ransoms to mitigate cyber attacks were carrying out their own piracy in a plot to extort millions of dollars from a series of companies, prosecutors say. Kevin Tyler Martin, a ransomware threat negotiator for River North-based DigitalMint at the time of the alleged conspiracy, was among ...
- Update Chrome now: 20 security fixes just landed
October 31, 2025
Google has released an update for its Chrome browser that includes 20 security fixes, several of which are classed as high severity. Most of these flaws were found in Chrome’s V8 engine—the part of Chrome (and other Chromium-based browsers) that runs JavaScript. Chrome is by far the world’s most popular browser, used by an estimated 3.4 ...