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The Evilnum threat group updated its long-running intrusions against UK and European organizations by overhauling both delivery and post-compromise tooling, with researchers linking the activity to targeted attacks on FinTech firms and later an intergovernmental organization involved in migration services. Earlier campaigns abused KYC-themed spearphishing and malicious .lnk files disguised as PDFs, while later operations shifted to malicious Word documents using template injection, VBA stomping, and heavily obfuscated JavaScript to launch a multi-stage infection chain. Across the campaigns, Evilnum increasingly relied on masquerading techniques, including modified legitimate Oracle and Nvidia executables, fake update installers, and themed domains designed to blend into victim environments.
The malware stack also evolved, culminating in the deployment of a Python-based remote access trojan known as PyVil RAT. Reporting and IOC data show Evilnum using staged JavaScript, .NET, Python, and OCX-based components, rotating command-and-control infrastructure, and persistence via scheduled tasks rather than older Run registry key methods. PyVil and related payloads support keylogging, screenshots, command execution, SSH shell access, credential theft, and additional module downloads, including a custom LaZagne variant for stealing passwords and cookies, while associated infrastructure has included impersonation domains, GitLab and forum-style URLs, and code-signing artifacts tied to some payloads.
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In March 2022, Evilnum targeted an intergovernmental organization involved in international migration services, expanding beyond its predominant FinTech victim set. The campaign's timing coincided with the Russia-Ukraine conflict.
In the newer campaigns observed from early 2022, Evilnum moved from LNK-in-ZIP phishing to malicious Microsoft Word documents using template injection, VBA code stomping, and obfuscated JavaScript to deploy its malware chain.
ThreatLabz reported that it had been monitoring Evilnum APT activity since the beginning of 2022, observing several low-volume targeted campaigns in the UK and Europe.
A February 2021 update to ESET Research's Evilnum IOC repository added new indicators for Evilnum and Pyvil, including detection of Python/Pyvil.A and Win32/GitBot.A.
The Evilnum threat group has been active since 2018, primarily targeting FinTech companies in the UK and other EU countries using spear-phishing lures themed around KYC documents.
Cybereason's Nocturnus team documented a newer Evilnum infection chain in which a PDF-themed LNK in a ZIP archive drops JavaScript loaders, modified Oracle and Nvidia executables, and a final Python-based RAT dubbed PyVil RAT. The report also noted a shift in persistence from Run registry keys to scheduled tasks and expanding command-and-control infrastructure.
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Multiple campaigns are using phishing emails and archive-based lures to deliver remote access malware through stealthy, multi-stage infection chains. Point Wild documented **Remcos RAT**, **DesckVB RAT**, and a Rust-based **COVERT RAT** being delivered through ZIP attachments, weaponized `LNK` files, obfuscated JavaScript droppers, and hidden PowerShell execution, often with decoy documents to mask activity. The payloads were loaded filelessly through .NET reflection and in-memory execution, with operators abusing legitimate binaries and services such as `aspnet_compiler.exe`, GitHub, and paste or web-hosting platforms to stage malware while evading detection. Reported command-and-control infrastructure included `192.3.27.141:8087`, `172.245.246.77:8080`, and `181.231.253.69:4444`, while observed artifacts included `C:\ProgramData\remcos\logs.dat`, `C:\ProgramData\colors\logs.dat`, and payload names such as `ALTERNATE.dll`, `ClassLibrary3.dll`, `Keylogger.dll`, and `msedge_proxy.exe`. Separate reporting showed the same tradecraft extending beyond custom RATs to commodity remote-access software and credential theft. A campaign targeting Russian aerospace and aviation organizations used invoice-themed phishing and spoofed domains to install a portable **AnyDesk** instance for unattended access, maintain persistence with a scheduled task, minimize visibility with Tray Minimizer, and exfiltrate configuration data through a command-line SMTP mailer; Seqrite linked the activity to **Rare Werewolf (Librarian Ghouls)**. Securonix research cited by Trojan Killer described **VEIL#DROP** using fake document-style JavaScript files, Blogspot-hosted staging, PowerShell download cradles, XOR decoding, and in-memory .NET loading to deploy **PureLog Stealer**, which targets browser credentials, cookies, session tokens, wallet data, and host information. Across the campaigns, the common pattern is phishing-led initial access followed by LOLBins, PowerShell, staged downloads, persistence, and covert data theft or long-term remote control.
Jul 12, 2026
Reporting describes several unrelated but contemporaneous malware operations targeting both Windows and Linux environments. In Taiwan, FortiGuard Labs observed targeted phishing using tax and e-invoice lures to deliver **Winos 4.0 (ValleyRat)** and plugins, with delivery chains including malicious `.LNK` files, **DLL sideloading**, and **BYOVD** using the vulnerable driver `wsftprm.sys`, supported by rapidly rotating domains and cloud-hosted infrastructure that reduces the effectiveness of static blocklists. Separately, Cato CTRL reported a new Windows loader, **Foxveil**, that stages and retrieves shellcode via trusted platforms (**Cloudflare Pages**, **Netlify**, and **Discord attachments**) and executes payloads using techniques including **Early Bird APC injection** (often into a fake `svchost.exe`) or self-injection, while persisting via Windows services or masqueraded binaries dropped into `SysWOW64`. Additional reporting covers distinct campaigns in other regions and platforms. A LATAM-focused intrusion chain uses fake bank receipt lures (double-extension such as `.pdf.js`) to deliver **XWorm v5.6**, employing oversized/obfuscated JavaScript, WMI-based process creation (`Win32_Process`) to launch hidden PowerShell, and abuse of a hardcoded **Cloudinary** URL for staging—capabilities consistent with credential theft and enabling follow-on ransomware. Trellix analysis described a separate **Monero** cryptomining operation distributed via pirated software installers that propagates through **USB/external drives** to reach even air-gapped systems, using multi-component “watchdog” self-healing behavior and aggressive defense-evasion. On Linux, LevelBlue detailed a new **SysUpdate** variant (packed `ELF64`) that performs host reconnaissance and uses strong C2 encryption; researchers built a **Unicorn Engine**-based emulation tool to reproduce key generation/encryption routines and decrypt captured C2 traffic for investigation and detection engineering.
Jun 29, 2026
Researchers documented several **multi-stage malware campaigns** that used phishing lures, fake software updates, and DLL sideloading to deploy credential theft and remote access payloads. In one June 2026 intrusion targeting a small number of German financial institutions, a spear-phishing email posing as an urgent VPN update delivered a 7-Zip self-extracting archive that dropped a signed copy of **Radmin VPN** alongside a trojanized `Qt5Core.dll`, launching **HijackLoader** and ultimately **Vidar v2.1** through process hollowing into a signed `dBpoweramp` binary. A parallel chain used Opera sideloading to install **SnappyClient RAT**. Separate reporting also described a targeted Spanish-language phishing lure that delivered a password-protected archive containing a .NET loader and a byte-reversed DLL payload, as well as a fake browser update chain that used a signed **G DATA AntiVirus** binary to sideload **PlugX** linked to suspected **Mustang Panda** activity. Across the cases, the malware families showed strong emphasis on **credential theft, stealth, and layered execution**. Vidar samples were observed harvesting browser passwords, cookies, screenshots, FileZilla and WinSCP data, and cryptocurrency wallet information, while also bypassing Chromium App-Bound Encryption by launching legitimate Chrome and Edge instances with specific flags and using dead-drop resolvers such as **Steam** and **Telegram** to locate command-and-control servers. The PlugX implant used multiple decoding and encryption layers, manual PE mapping, registry-based persistence, and WinHTTP communications to `fruitbrat[.]com:443`, while another credential-stealing sample tied in open sources to **RedFoxtrot** targeted Firefox and Internet Explorer data and used proxy-aware HTTP communications with hardcoded infrastructure. The reporting highlights continued attacker reliance on signed binaries, staged loaders, and obfuscated payload handling to evade detection while stealing credentials and enabling follow-on access.
Jul 12, 2026