CyberHappenings logo
☰
Home Browse About

Track cybersecurity events as they unfold. Sourced timelines. Filter, sort, and browse. Fast, privacy‑respecting. No invasive ads, no tracking.

Rhadamanthys Stealer Adds Device Fingerprinting, PNG Steganography Payloads

First reported
Last updated
2 unique sources, 2 articles

Summary

Hide ▲

Rhadamanthys Stealer, a popular information stealer, has been updated to include device and web browser fingerprinting capabilities. The malware now uses PNG steganography to conceal its payloads. The threat actor behind Rhadamanthys has also advertised two additional tools, Elysium Proxy Bot and Crypt Service, on their website. The stealer's current version is 0.9.2, and it is available under a malware-as-a-service (MaaS) model with tiered pricing packages. The threat actor has rebranded themselves as "RHAD security" and "Mythical Origin Labs," indicating a long-term business venture. The stealer's capabilities have evolved significantly, posing a comprehensive threat to personal and corporate security. The latest updates include enhanced obfuscation techniques, environment checks, and a Lua runner for additional plugins. The Rhadamanthys infostealer operation has been disrupted, with numerous customers reporting that they no longer have access to their servers. Cybercriminals claim that law enforcement gained access to their web panels, requiring certificate-based logins instead of root passwords. The disruption is suspected to be related to Operation Endgame, an ongoing law enforcement action targeting malware-as-a-service operations.

Timeline

  1. 12.11.2025 02:14 1 articles · 23h ago

    Rhadamanthys Infostealer Operation Disrupted by Law Enforcement

    The Rhadamanthys infostealer operation has been disrupted, with customers losing access to their servers. Cybercriminals claim that law enforcement gained access to their web panels, requiring certificate-based logins instead of root passwords. The disruption is suspected to be related to Operation Endgame, an ongoing law enforcement action targeting malware-as-a-service operations.

    Show sources
    Open in new tab
  2. 03.10.2025 18:58 2 articles · 1mo ago

    Rhadamanthys Stealer Adds Device Fingerprinting and PNG Steganography

    Rhadamanthys Stealer version 0.9.2 has been updated to include device and web browser fingerprinting capabilities. The malware now uses PNG steganography to conceal its payloads. The threat actor behind Rhadamanthys has also advertised two additional tools, Elysium Proxy Bot and Crypt Service, on their website. The stealer's capabilities have evolved significantly, posing a comprehensive threat to personal and corporate security.

    Show sources
    Open in new tab

Information Snippets

Similar Happenings

Malicious npm packages targeting Windows, macOS, and Linux systems

Ten malicious npm packages were discovered that deliver an information stealer targeting Windows, macOS, and Linux systems. The packages, uploaded to the npm registry on July 4, 2025, have collectively accumulated over 9,900 downloads. The malware uses multiple layers of obfuscation and a fake CAPTCHA to evade detection and harvests credentials from system keyrings, browsers, and authentication services. The packages are still available on npm despite being reported to npm. The attack aims to steal sensitive information, including credentials and session cookies, which can provide unauthorized access to corporate resources.

Open in new tab

YouTube Ghost Network Exploits 3,000 Videos for Malware Distribution

A malicious network of YouTube accounts, dubbed the YouTube Ghost Network, has been actively distributing malware since 2021. Over 3,000 videos have been published, with a significant increase in volume since the start of the year. The network abuses hacked accounts to promote pirated software and game cheats, infecting users with stealer malware. Google has removed most of these videos. The operation leverages trust signals like views, likes, and comments to make malicious content appear safe. The network uses a role-based structure to maintain operational continuity even when accounts are banned. The malware families distributed include Lumma Stealer, Rhadamanthys Stealer, StealC Stealer, RedLine Stealer, Phemedrone Stealer, and Node.js-based loaders.

Open in new tab

F5 BIG-IP Source Code and Vulnerability Information Stolen in Cyberattack

Over 266,000 F5 BIG-IP instances are exposed online, potentially vulnerable to remote attacks following a breach disclosed by F5. The company has released security updates to address 44 vulnerabilities, including those stolen in the breach. F5 has not found evidence that the stolen information has been used in actual attacks or disclosed publicly. The breach was attributed to a highly sophisticated nation-state threat actor, and F5 has taken extensive actions to contain the threat. F5's BIG-IP is a critical product used in application delivery networking and traffic management by many large enterprises. The company has 23,000 customers in 170 countries, including 48 of the Fortune 50 entities. The breach did not compromise F5's software supply chain or result in suspicious code modifications. The company has validated the safety of BIG-IP releases through multiple independent reviews by leading cybersecurity firms and has advised users to apply the latest updates for BIG-IP and related products. The breach involved a nation-state threat actor gaining persistent, long-term access to F5's product development environment and engineering knowledge management platforms. F5 disclosed the breach on October 15, 2025, confirming that the attack was detected in August 2025. The threat actor exfiltrated files containing BIG-IP source code and information regarding undisclosed vulnerabilities. F5 has not found evidence of access to or exfiltration of data tied to its CRM, financial, support case management, or iHealth systems, nor the NGINX source code or product development environment. F5 has identified no evidence of modification to its software supply chain, including source code, build pipeline, and release pipeline. F5 has worked with multiple incident response firms and law enforcement to mitigate the event and believes it has contained the threat. F5 has rotated credentials, strengthened access controls, deployed improved inventory and patch management automation, integrated better monitoring and detection tools, and implemented enhancements to network security infrastructure. F5 advises customers to apply the latest BIG-IP updates and has shared guidance for hardening customers' systems. On October 15, 2025, CISA directed federal civilian executive branch (FCEB) agencies to inventory F5 BIG-IP products and apply updates where necessary. The US government has urged federal agencies to take immediate action after F5 revealed it had been breached by a nation-state actor. The US Cybersecurity and Infrastructure Security Agency (CISA) issued an emergency directive demanding that federal agencies evaluate if the networked management interfaces are accessible from the public internet and apply updates from F5. CISA warned that the threat actor's access to the F5 development environment could enable it to conduct static and dynamic analysis to discover logical flaws, zero-day vulnerabilities, and targeted exploits. The Justice Department ordered a delay in public disclosure of the breach on September 12, 2025. F5 has improved internal security including access controls, inventory and patch management, network security, and monitoring of all software development platforms. Tom Kelermann, VP of cyber risk at Hitrust, argued that the F5 breach is likely to be the first stage in a supply chain campaign. Ilia Kolochenko, CEO of ImmuniWeb, agreed that the stolen IP could be used to craft zero-day exploits for subsequent APT campaigns.

Open in new tab

TA585 Using MonsterV2 in Phishing Campaigns

TA585, a sophisticated threat actor, has been actively delivering the MonsterV2 malware via phishing campaigns since February 2025. The group manages its own infrastructure and employs multiple delivery techniques, including IRS and SBA-themed lures, malicious JavaScript injections, and fake CAPTCHA verifications. MonsterV2, also known as Aurotun Stealer, is a versatile malware capable of stealing sensitive data, acting as a clipper, establishing remote control, and executing commands from a C2 server. The malware is sold by a Russian-speaking actor and is typically packed using a C++ crypter called SonicCrypt to evade detection. TA585's campaigns have also included GitHub-themed lures and the distribution of other malware, such as Rhadamanthys. MonsterV2 avoids infecting systems in Commonwealth of Independent States (CIS) countries.

Open in new tab

WordPress Sites Exploited for ClickFix Phishing Attacks

WordPress sites are being exploited to inject malicious JavaScript that redirects users to phishing pages. The attacks use a theme-related file to load a dynamic payload from a remote server, which includes a JavaScript file and a hidden iframe mimicking legitimate Cloudflare assets. The domain involved is part of a traffic distribution system (TDS) known as Kongtuke. The campaign highlights the need for securing WordPress sites and keeping software up-to-date. Additionally, a new phishing kit named IUAM ClickFix Generator allows attackers to create customizable phishing pages mimicking browser verification challenges. This kit has been used to deploy information stealers like DeerStealer and Odyssey Stealer. The emergence of such tools lowers the barrier to entry for cybercriminals, enabling sophisticated, multi-platform attacks. A new ClickFix campaign employs cache smuggling to evade detection, using the browser's cache to store malicious data without downloading files or communicating with the internet. The attack masquerades as a Fortinet VPN Compliance Checker, executing an obfuscated payload via a PowerShell script.

Open in new tab