The threat actor k0t is conducting a large-scale campaign targeting network edge devices from FortiGate, FortiWeb, and Palo Alto GlobalProtect. The campaign exploits known vulnerabilities CVE-2025-64446 and CVE-2026-0257, combined with brute-force attacks, to harvest over 70,000 credentials globally. Post-compromise activities include credential theft, Active Directory enumeration, and data exfiltration using Rclone to cloud storage. Persistence is maintained through tools such as MeshCentral, AdaptixC2, and remote management software like Atera and AnyDesk. The campaign overlaps with ransomware groups Qilin and The Gentlemen, suggesting k0t may act as an Initial Access Broker, though no direct affiliation is confirmed.
On August 31, 2026, threat actors exploited two zero-day vulnerabilities in PaperCut MF version 24.0.2, targeting an internet-facing print server in the Education sector. The attackers deployed an in-memory Java loader to establish a web shell, through which they delivered a trojanized Microsoft Copilot binary containing an AdaptixC2 implant. This implant connected to command-and-control infrastructure hosted on Alibaba servers. After a dormant period, the attackers performed reconnaissance and Active Directory enumeration, stole a token from a domain-privileged service account, and moved laterally to a domain controller. On the domain controller, they dumped credentials, enabled Windows Restricted Admin mode for pass-the-hash attacks, and extracted the NTDS.dit database, achieving full domain compromise.
Operation Master is a sophisticated cybercrime campaign exploiting a GlobalProtect authentication bypass vulnerability (CVE-2026-0257) to compromise enterprise networks across multiple countries. The attackers conducted extensive network scanning to identify high-value targets, executed SQL injection attacks with privilege escalation to steal databases, and exfiltrated Active Directory credentials. They monetized stolen data by selling it on underground forums and operating a multi-tenant automated invoice fraud platform that sent millions of phishing messages and fraudulent links. The operation employed advanced phishing techniques including M365 OAuth device-code phishing and voice-based credential harvesting, with payments collected via PIX through serverless proxies.
Since February 2026, there has been a resurgence of attacks abusing Node.js, targeting government, technology, and hospitality sectors. Attackers use the legitimate, signed node.exe binary to execute malicious JavaScript payloads, bypassing signature-based detection. Notable incidents include compromises of an Asian technology company and a U.S. fintech firm, involving advanced techniques such as EtherHiding and deployment of Rust-based backdoors linked to ransomware operations. Multiple attacks involve ModeloRAT, associated with initial access broker Woodgnat, connected to various ransomware families. Attackers combine living-off-the-land tactics with commodity malware and employ ClickFix techniques for initial access.
Cruciferra is a sophisticated crypter service utilized by multiple unrelated cybercriminal threat clusters to deliver remote access trojans and infostealers. Written in Mono, it employs extensive defense-evasion capabilities including indirect system calls, API unhooking, BYOVD-based EDR tampering, privilege escalation, and customized Process Ghosting for payload execution. The service features over 90 variations of cryptographic functions to obfuscate data and payloads, complicating static analysis and signature-based detection. Cruciferra was first advertised in fall 2025 with pricing tiers ranging from $450 to $2000 monthly. It has been observed in campaigns delivering various malware families including zgRAT, AgentTesla, AsyncRAT, XLoader, XWorm, Phantom Stealer, Formbook, and Remcos, primarily targeting financial services, healthcare, and government entities through opportunistic email-based attacks.
In July 2025, threat actors compromised organizations through SEO poisoning campaigns targeting users searching for legitimate IT management tools. Users downloading trojanized installers for ManageEngine OpManager received Bumblebee malware, granting initial access. The attackers exploited the fact that users executing these IT tools were privileged administrators, enabling rapid lateral movement to domain controllers. They dumped credentials using wbadmin, created backdoor accounts with enterprise admin privileges, and installed RustDesk for persistent access. AdaptixC2 beacons were deployed for command and control. The threat actors conducted extensive reconnaissance, dumped LSASS memory across multiple systems, attempted Veeam credential theft, and exfiltrated data via SFTP using FileZilla. The intrusion culminated in Akira ransomware deployment across both root and child domains within 44 hours, with subsequent re-encryption two days later affecting the child domain.
A fraudulent website impersonating Anthropic's Claude AI platform has been distributing a previously undocumented backdoor called Beagle through malvertising campaigns. The attack begins when victims download a fictitious tool named Claude-Pro Relay from claude-pro[.]com, delivered as a 505 MB ZIP archive. The infection chain utilizes DLL sideloading, exploiting a signed G DATA antivirus updater to load malicious code. The technique mirrors PlugX delivery methods but deploys different payloads. Beagle supports eight commands including shell execution, file transfer, and directory listing, communicating with C2 servers using AES encryption. Related samples dating to February 2026 have been identified, with some variants delivering AdaptixC2 framework. Additional domains impersonated security vendors like Trellix, CrowdStrike, and SentinelOne. The infrastructure spans Cloudflare for distribution and Alibaba Cloud for command and control.
On March 12, 2026, a sophisticated attack campaign was identified targeting Chinese-speaking individuals using military-themed document lures distributed through a malicious ZIP archive. The operation employed a trojanized SumatraPDF binary as the initial vector to deploy an AdaptixC2 Beacon and Visual Studio Code on victim systems. The shellcode loader demonstrated significant similarities to the TOSHIS loader previously linked to TAOTH campaigns. Attackers established a custom AdaptixC2 Beacon listener utilizing GitHub for command-and-control infrastructure. The staging server infrastructure additionally hosted CobaltStrike Beacon and EntryShell backdoor, both previously associated with this threat group. The campaign infrastructure included multiple compromised domains and IP addresses for malware distribution and C2 communications.
AdaptixC2 is an emerging open-source post-exploitation framework rapidly adopted by threat actors in APT attacks and ransomware campaigns. Written in Go and C++, it supports Windows, macOS, and Linux with extensive modularity through Beacon Object Files (BOFs). The framework enables diverse command-and-control channels including HTTP/S, TCP, mTLS, DNS, DoH, and SMB with RC4 encryption throughout. It implements sophisticated evasion techniques targeting both network detection systems and endpoint defenses. Despite advanced obfuscation capabilities, network-level detection remains viable through analysis of distinctive communication patterns, header structures, and behavioral indicators. The framework supports credential harvesting via LSASS dumping, LAPS exploitation, and Kerberos attacks, alongside defense evasion through process injection and lateral movement via WinRM and PsExec. Combined NDR and EDR solutions provide effective multi-layered detection coverage against AdaptixC2 operations across network ...
A campaign targeting Russian corporate entities, particularly HR, payroll, and administrative departments, has been uncovered. The attack uses realistic decoy documents themed around employee bonuses and financial policies. The malware ecosystem involves a malicious LNK file leading to an implant dubbed DUPERUNNER, which then loads the AdaptixC2 Beacon to connect to the threat actor's infrastructure. The infection chain begins with a spear-phishing ZIP archive containing PDF-themed LNK files. The DUPERUNNER implant, programmed in C++, performs various functions including downloading and opening decoy PDFs, process enumeration, and shellcode injection. The final stage involves the AdaptixC2 Beacon, which communicates with the command-and-control server. The campaign, tracked as UNG0902, uses multiple malicious infrastructures and is believed to be targeting employees of various organizations.
Kaspersky researchers uncovered new malicious operations by the Tomiris threat actor targeting foreign ministries, intergovernmental organizations, and government entities. The attacks, which began in early 2025, show a shift in tactics with increased use of implants leveraging public services like Telegram and Discord as command-and-control servers. The group employs various programming languages including Go, Rust, C/C#/C++, and Python to develop reverse shell tools. Some infections lead to the deployment of open-source post-exploitation frameworks such as Havoc and AdaptixC2. The campaign primarily focuses on Russian-speaking users and entities, with additional targets in Central Asian countries.
A malicious npm package named 'https-proxy-utils' was discovered containing a post-install script that downloads and executes the AdaptixC2 post-exploitation framework agent. The package impersonated legitimate utilities and cloned functionality to evade detection. It targets Windows, Linux, and macOS platforms with tailored payload delivery methods. Once installed, the AdaptixC2 agent enables remote access, command execution, and persistence, posing significant risks to affected systems. This incident exemplifies the increasing abuse of open-source software supply chains as attack vectors. No known exploits in the wild have been reported yet, but the threat remains active and multi-platform. The malicious infrastructure is hosted on the domain cloudcenter.top, which serves payloads for different OS architectures. European organizations relying on npm packages for development or deployment are at risk, especially those with mixed OS environments. Mitigation requires vigilant package vetting, monitoring for suspicious post-install scripts, and network controls to block malicious domains.
AdaptixC2 is a lightweight, modular command-and-control framework designed for flexibility and customization. The analysis reveals its sophisticated capabilities, including multi-protocol communication, advanced evasion techniques, and a BOF execution system for extensibility. The discovery of 102 active servers across multiple countries indicates widespread operational use, with attackers leveraging legitimate cloud infrastructure. The framework's support for HTTP, SMB, and TCP protocols creates diverse attack vectors, while its dynamic API resolution and encryption techniques challenge traditional detection methods. Built-in operational security features and lateral movement capabilities demonstrate its effectiveness for long-term persistence and network penetration. The exposed infrastructure and configuration patterns provide valuable intelligence for proactive defense and threat hunting activities.
A new malware loader named CountLoader has been identified, strongly associated with Russian ransomware gangs. It comes in three versions: .NET, PowerShell, and JScript. The threat is believed to be part of an Initial Access Broker's toolset or used by a ransomware affiliate linked to LockBit, BlackBasta, and Qilin groups. CountLoader was recently employed in a phishing campaign targeting Ukrainian citizens, impersonating the Ukrainian police. The loader attempts to connect to multiple C2 servers, downloads and executes various malware payloads, and uses advanced techniques to evade detection. It has been observed dropping CobaltStrike and AdaptixC2, among other malicious tools. The malware's functionality includes system information gathering, persistence mechanisms, and multiple download methods.
AdaptixC2, an open-source post-exploitation and adversarial emulation framework, has been observed being used in real-world attacks. This versatile tool allows threat actors to execute commands, transfer files, and perform data exfiltration on compromised systems. Its open-source nature enables easy customization, making it highly flexible and dangerous. The framework supports sophisticated tunneling capabilities, modular design with extenders, and various beacon agent formats. Two infection scenarios were analyzed: one using social engineering via Microsoft Teams, and another likely involving AI-generated scripts. The increasing prevalence of AdaptixC2 in attacks, including its use alongside ransomware, highlights the growing trend of attackers leveraging customizable frameworks to evade detection.
A sophisticated cyber attack campaign leveraged SEO poisoning to compromise organizations through trojanized IT management tool installers. The attack began when users searching for ManageEngine OpManager were directed to a malicious website, downloading a compromised MSI file that installed Bumblebee malware. The threat actors then deployed AdaptixC2 beacons, performed internal reconnaissance, created privileged accounts, and installed RustDesk for persistence. They exfiltrated data via SFTP and ultimately deployed Akira ransomware across the network. The campaign affected multiple organizations, with time to ransomware ranging from 9 to 44 hours after initial access. The attackers used various tools and techniques for lateral movement, credential theft, and defense evasion.
