The stealthy Python-based backdoor framework deploys a persistent Windows implant likely designed for espionage. The post Sophisticated Deep#Door Backdoor Enables Espionage, Disruption appeared first on SecurityWeek .
A malicious campaign is targeting French-speaking users in an attempt to steal passwords, payment details and banking details from people across France, according to researchers at the Institute for Strategic Studies (ISS).
The infection chain includes a fake CAPTCHA page, a Bash script, a Nuitka loader, and the Python-based infostealer. The post Cloudflare-Themed ClickFix Attack Drops Infiniti Stealer on Macs appeared first on SecurityWeek .
So, I&#;x26;#;39;ve been slow to get on the Claude Code/OpenCode/Codex/OpenClaw bandwagon, but I had some time last week so I asked Claude to review (/security-review) some of my python scripts. He found more than I&#;x26;#;39;d like to admit, so I checked in a bunch of updates. In reviewing his suggestions, he was right, I made some stupid mistakes, some of which have been sitting in there for a long time. It was nothing earth-shattering and it took almost no time for Claude, it took longer for me to read through the updates he wanted to make, figure out what he was seeing, and decide whether to accept them or tweak them. Here are a few of them.
Hundreds of GitHub accounts were accessed using credentials stolen in the VS Code GlassWorm campaign. The post ForceMemo: Python Repositories Compromised in GlassWorm Aftermath appeared first on SecurityWeek .
Written in C++ and Python, the malware exfiltrates system information, browser data, and steals files. The post ‘Arkanix Stealer’ Malware Disappears Shortly After Debut appeared first on SecurityWeek .
Arkanix Stealer, a newly discovered malware operating under a Malware-as-a-Service model, targets a wide range of user data including cryptocurrencies, gaming, and online banking information. The stealer, available in both Python and C++ versions, offers configurable features and employs various techniques to evade detection. It can extract data from multiple browsers, VPNs, and gaming platforms, as well as capture screenshots and RDP connection details. The malware authors promoted their product through a Discord server and implemented a referral program to attract customers. The campaign appears to have been short-lived, with infrastructure taken down around December 2025.
Infostealer threats are expanding beyond Windows, targeting macOS and leveraging cross-platform languages like Python. Recent campaigns use social engineering to deploy macOS-specific infostealers such as DigitStealer, MacSync, and AMOS. These stealers use fileless execution and native macOS utilities to harvest credentials and sensitive data. Python-based stealers are also on the rise, allowing attackers to quickly adapt and target diverse environments. Additionally, threat actors are abusing trusted platforms like WhatsApp and PDF converter tools to distribute malware such as Eternidade Stealer. These evolving threats blend into legitimate ecosystems and evade conventional defenses, posing significant risks to organizations across various operating systems and delivery channels.
Threat actors exploited Cloudflare's free-tier infrastructure and Python environments to deploy AsyncRAT, demonstrating advanced evasion techniques. The attack begins with phishing emails containing Dropbox links to malicious files. It uses legitimate Python downloads and sophisticated code injection targeting explorer.exe. The campaign ensures persistence through multiple vectors, including startup folder scripts and WebDAV mounting. It abuses trusted infrastructure like Cloudflare to mask activities and evade detection. The attackers employ social engineering tactics, such as displaying legitimate PDF documents, to reduce suspicion. This campaign highlights the trend of abusing cloud services for malware delivery and execution, emphasizing the need for multi-layered security approaches.
The Boto Cor-de-Rosa campaign reveals Astaroth's new strategy of exploiting WhatsApp Web for propagation. This Brazilian banking malware now uses a Python-based worm module to retrieve victims' WhatsApp contact lists and automatically send malicious messages, expanding its infection reach. The attack begins with a malicious ZIP file sent via WhatsApp, containing a Visual Basic script that downloads additional components. The malware then operates two parallel modules: a propagation module for spreading through WhatsApp contacts, and a banking module for credential stealing. This campaign demonstrates Astaroth's evolution, combining traditional malware techniques with sophisticated social engineering and multi-platform propagation, primarily targeting Brazilian users.
The VVS Discord Stealer is a Python-based malware designed to exfiltrate sensitive Discord user data including credentials and tokens. It uses Pyarmor with BCC mode and AES-128-CTR encryption to heavily obfuscate its code, evading detection by static and dynamic analysis tools. The malware decrypts encrypted Discord tokens, queries Discord APIs for user information, injects malicious JavaScript into the Discord client to intercept active sessions, and extracts data from multiple web browsers. It achieves persistence by configuring itself to run at system startup and deceives victims by displaying a fake error message. While no known exploits or CVEs are reported, its capabilities pose a medium severity threat. The stealer primarily targets Windows environments where Discord and browsers are installed and relies on user interaction, likely via social engineering. European organizations with significant Discord usage, especially in technology, gaming, media, and education sectors, face risks of credential theft, unauthorized access, data leakage, and operational disruption. Detection requires behavioral and heuristic analysis due to strong obfuscation techniques.
The Blackpoint SOC recently responded to an incident initiated through the tried-and-true ClickFix technique; a social engineering method consistently leveraged across numerous campaigns this past year. These lures convince users to press Win + R to open the Windows Run dialog box, then enter a command presented as a harmless “human verification” step or similar prompt. This pattern has been repeatedly used to deploy everything from information stealers to remote access trojans (RATs), and it has also become one of the primary delivery vectors for a newer loader family known as CastleLoader.
Researchers have uncovered a campaign where free 3D models for Blender with embedded Python scripts are being used to distribute the StealC V2 infostealer.
The Water Saci campaign is a sophisticated malware operation primarily targeting Brazilian banking and cryptocurrency platforms via WhatsApp. It employs multi-format malware delivery using various scripting languages, including a shift from PowerShell to Python, likely enhanced by AI tools to evade detection and complicate analysis. The malware features aggressive anti-sandbox techniques, extensive backdoor capabilities, and persistence mechanisms. Although currently focused on Brazil, the use of WhatsApp as a propagation vector and targeting financial applications poses a potential risk to European organizations with ties to Brazilian markets or users. The campaign’s complexity and AI-enhanced development pipeline indicate a medium severity threat with significant evasion and persistence capabilities. Defenders should prioritize monitoring WhatsApp-based phishing attempts, scrutinize multi-format file attachments, and implement advanced behavioral detection to mitigate risks. Countries with strong economic or diaspora links to Brazil and high WhatsApp usage are more likely to be affected.
Arkanix Stealer is a newly discovered information-stealing malware designed for short-term financial gain. Initially developed in Python, it has evolved into a more sophisticated C++ version employing VMProtect obfuscation and a technique called 'Chrome Elevator' to bypass App Bound Encryption. It targets browsers, crypto wallets, VPN accounts, Steam accounts, and system information. Distributed primarily via Discord and online forums disguised as legitimate tools, it offers threat actors a web panel with premium features for managing stolen data. The malware demonstrates advanced capabilities and rapid evolution, highlighting the ease of launching cybercrime operations for quick profits. While no known exploits in the wild have been reported yet, its medium severity reflects the potential impact on confidentiality and financial assets. European organizations using targeted browsers, crypto wallets, or VPN services are at risk, especially those with users active on Discord or similar platforms. Mitigation requires targeted detection of obfuscated binaries, network monitoring for suspicious domains like arkanix.pw, and user education on social engineering risks. Countries with high crypto adoption and active gaming communities are more likely to be affected.
A new Python-based Remote Access Trojan (RAT) named 'Nursultan Client' targets gamers by masquerading as a legitimate Minecraft client. It uses the Telegram Bot API for command and control, enabling attackers to capture screenshots, access webcams, steal Discord authentication tokens, open URLs, and perform system reconnaissance on Windows machines. Although it attempts persistence, its implementation has flaws. The malware's focus on Discord tokens and gaming users suggests a Malware-as-a-Service model, likely sold to other threat actors. No known exploits in the wild have been reported yet. The threat poses a medium severity risk but could escalate if customized versions improve persistence or evasion. European organizations with gaming communities or employees using Discord and Minecraft are at risk, especially in countries with high gaming engagement and Discord usage. Mitigation requires targeted detection of the fake client, monitoring Telegram API usage, and securing Discord tokens. Countries like Germany, France, the UK, and the Netherlands are most likely affected due to their large gaming populations and technology adoption. The threat is medium severity given its impact on confidentiality and moderate ease of exploitation without user interaction beyond initial infection.
For a while, clipboard content has been monitored by many infostealers. Purposes can be multiple, like simply searching and exfiltrating juicy data or on-the-fly modification like crypto-wallet swapping&#;x26;#;x5b;1&#;x26;#;x5d;. Note that the clipboard is a major risk when you don&#;x26;#;39;t disable clipboard sharing between your virtual machines and hosts. A malware running in a sandbox will access your (host) clipboard without problem!
This report analyzes a malware campaign initially identified as a Python-based infostealer that ultimately leads to the deployment of PureRAT, a commercially available remote access trojan (RAT). The campaign involves multiple stages and tools, including various loaders and stealers, culminating in full RAT capabilities. Indicators such as IP addresses and file hashes are provided for detection and blocking. No specific affected software versions or CVEs are identified. The threat is assessed as medium severity due to its capability to escalate from information theft to full remote access.
Today, I spoted on VirusTotal an interesting Python RAT. They are tons of them but this one attracted my attention based on some function names present in the code: self_modifying_wrapper(), decrypt_and_execute() and polymorph_code(). A polymorphic malware is a type of malware that has been developed to repeatedly mutate its appearance or signature files at every execution time. The file got a very low score of 2/64 on VT! (SHA256:7173e20e7ec217f6a1591f1fc9be6d0a4496d78615cc5ccdf7b9a3a37e3ecc3c).
