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Remcos RAT continues to appear as a full-featured remote access implant delivered by loaders and malicious email attachments, with analysts documenting a .NET-packed sample that unpacked in memory and deployed Remcos PRO 2.7.2. In the observed infection chain, the malware established persistence with a scheduled task, dropped and ran a VBS script from the Temp directory, copied itself into AppData\Roaming\remcos\, and then removed the script. Recovered configurations exposed operational settings including execution and log paths, mutex values, encryption keys, and at least one command-and-control endpoint at 185.244.26.209.
Technical analysis shows Remcos is built for long-term control and surveillance, with capabilities spanning file, process, service, registry, window, and power management, plus remote shell access, script execution, password recovery, proxying, and download-and-execute behavior. Researchers also described a watchdog mechanism that can inject into processes such as svchost.exe, store the main process PID in the registry, and relaunch the implant if it is killed. The malware supports offline keylogging, screenshot capture, and audio recording, stores and decrypts configuration data from a SETTINGS PE resource using RC4, and communicates with configured C2 infrastructure using a structured packet format with optional TLS and embedded certificate material; one demonstration showed an operator issuing command 0x94 to change a Notepad window title.
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EG-FinCIRT published a technical overview of Remcos capabilities, including host control, remote shell access, script execution, password recovery, proxying, and download-and-execute behavior. The article also provided code and artifacts for extracting an embedded payload from Lua files and RC4-decrypting the SETTINGS resource configuration.
Elastic Security Labs published technical analysis of later-stage Remcos behavior, detailing its watchdog process, offline keylogging, screenshot capture, audio recording, and command-and-control communications. The write-up also described registry artifacts, watchdog injection targets such as svchost.exe, and an operator command demonstration that changed a Notepad window title.
A malware analysis write-up examined a suspicious email-delivered executable that unpacked to Remcos PRO 2.7.2, established persistence with a scheduled task, and copied itself into AppData\Roaming\remcos\. The analyst also recovered and decrypted the SETTINGS configuration from memory, revealing command-and-control server 185.244.26.209 and other operational settings.
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Researchers and incident reports show **Remcos RAT** continuing to spread through multiple delivery channels, including business-themed phishing emails, fake cryptocurrency software, and multi-stage script loaders. Trend Micro documented a phishing campaign using an ACE archive attachment and an AutoIt-based loader to install **Remcos Professional 1.7**, while ESET reported a spoofed SafeMoon application that delivered Remcos to cryptocurrency users. SonicWall later identified a newer infection chain using VBScript, batch files, PowerShell, and a .NET loader to deploy Remcos after patching **AMSI** and **ETW** for defense evasion, with observed targeting of European institutions. Technical analysis from Elastic Security Labs found that modern Remcos samples retain extensive remote-access and surveillance functions, including **keylogging, screenshots, audio capture, webcam access, shell command execution, password theft, browser-history collection, persistence, process injection, and UAC bypass**. Elastic recovered most of the malware’s configuration structure and command set, showing that Remcos stores encrypted settings, supports TLS-enabled command-and-control, can masquerade as legitimate processes such as `explorer.exe`, and can clean browser artifacts or uninstall itself on command. The reporting underscores how a tool originally marketed for red teaming has become a widely abused malware family with increasingly evasive delivery chains and mature post-compromise control features.
Aug 14, 2026
Researchers reported multiple **Remcos RAT** campaigns using phishing emails and trusted infrastructure to infect victims while evading detection. In one intrusion chain, a ZIP attachment named `MV MERKET COOPER SPECIFICATION.zip` delivered an obfuscated JavaScript file that fetched a PowerShell loader from `almacensantangel[.]com`; the loader then reconstructed and decrypted payloads in memory, including `ALTERNATE.dll` and `Cqeqpvzeia.exe`. The malware injected into the legitimate Microsoft .NET utility `aspnet_compiler.exe`, communicated with `192[.]3[.]27[.]141:8087`, and stored captured keystrokes and other data in `C:\ProgramData\remcos\logs.dat`, leaving few disk artifacts. A separate campaign used phishing emails that linked to a fake Google Drive sharing page hosted through **Google Cloud Storage** and the trusted `googleapis.com` domain, helping the attack bypass email and web filtering. After user interaction, the infection chain used staged JavaScript redirects or downloads, followed by VBScript or PowerShell execution to retrieve the final Remcos payload, which was then injected into a legitimate Windows process through **process hollowing**, persisted via Windows Registry entries, and opened encrypted command-and-control channels. The activity underscores how attackers are combining living-off-the-land techniques, trusted cloud services, obfuscated scripting, and legitimate Windows binaries to deploy Remcos for surveillance and data theft.
Jun 29, 2026
Threat researchers reported multiple **remote access trojan (RAT)** developments that emphasize stealth, surveillance, and post-exploitation flexibility. A new **Remcos RAT** variant was observed adding real-time surveillance features (including on-demand webcam streaming) and keystroke transmission, while improving evasion through modular DLL plugins, encrypted C2 with in-memory-only config decryption, and dynamic API resolution; it also attempts to reduce forensic artifacts by deleting collected data (e.g., screenshots, audio, keylogging output, cookies) and removing persistence-related registry entries. Separately, Elastic detailed a **ClickFix** social-engineering campaign that uses compromised legitimate websites as delivery infrastructure to deploy a previously undocumented Windows RAT dubbed **MIMICRAT** (*AstarionRAT*). The intrusion chain includes a multi-stage PowerShell flow with **ETW and AMSI bypass**, a Lua-based shellcode loader, and HTTPS C2 on port `443` using traffic patterns designed to resemble web analytics; the implant supports token impersonation, SOCKS5 tunneling, and a broad command set, with suspected end goals of **ransomware deployment or data theft**. In parallel mobile-focused reporting, Zimperium described **ZeroDayRAT**, a cross-platform Android/iOS spyware-style RAT distributed via social engineering and sideloaded apps, enabling screen capture, keylogging, and credential/file exfiltration, highlighting continued convergence of surveillance and remote-control capabilities across endpoints.
Jun 29, 2026