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UAC-0050 Targets European Financial Institution with Spoofed Domain and RMS Malware

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UAC-0050 continues to target European financial institutions with spear-phishing and RMS malware to establish persistent access. Concurrently, Russia-aligned operations such as Ghostwriter (UAC-0057/UNC1151) have intensified phishing campaigns against Ukrainian government entities since spring 2026, using Prometheus-themed lures and sophisticated multi-stage payloads like OYSTERFRESH, OYSTERBLUES, and Cobalt Strike. Ukraine’s National Security and Defense Council also reported increased Russian use of AI tools (e.g., ChatGPT, Google Gemini) for target reconnaissance and malware runtime command generation, alongside broader Kremlin-backed campaigns focused on intelligence gathering, long-term network persistence, and influence operations. These activities align with prior reporting on Russia-nexus adversaries targeting Ukrainian entities and NATO member states, including the deployment of legitimate remote access tools like RMS by UAC-0050.

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  1. 24.02.2026 16:21 2 articles · 2mo ago

    UAC-0050 Targets European Financial Institution with Spoofed Domain and RMS Malware

    A Russia-aligned threat actor, UAC-0050, targeted a European financial institution involved in regional development and reconstruction initiatives. The attack involved a spear-phishing email spoofing a Ukrainian judicial domain to deliver a remote access payload. The campaign used a multi-layered infection chain to deploy Remote Manipulator System (RMS) malware, marking a potential expansion of the group's targeting beyond Ukraine. The attack highlights the group's use of legitimate remote access tools to maintain stealthy, persistent access while evading traditional antivirus detection. This incident suggests UAC-0050 may be probing institutions in Western Europe that support Ukraine. Additionally, Ghostwriter (UAC-0057/UNC1151), a Belarus-aligned threat actor, has been observed since spring 2026 targeting Ukrainian government entities using Prometheus-themed phishing lures. The campaign delivered OYSTERFRESH JavaScript via PDF attachments, which deployed OYSTERBLUES to the Windows Registry and Cobalt Strike via OYSTERSHUCK, enabling post-exploitation activities.

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PhantomCaptcha Campaign and CANFAIL Malware Attacks Targeting Ukraine Aid and Government Groups

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COLDRIVER APT Group Uses ClickFix Tactics to Deliver BAITSWITCH and SIMPLEFIX Malware

The COLDRIVER APT group, also known as Star Blizzard, has intensified its operations since May 2025, rapidly developing and refining its malware arsenal. The group has launched a new campaign using ClickFix tactics to deliver three new malware families: NOROBOT, YESROBOT, and MAYBEROBOT. These malware families are connected via a delivery chain and target individuals and organizations connected to Russia, including NGOs, human rights defenders, and think tanks. The attack chain involves tricking victims into running a malicious DLL via a fake CAPTCHA check, leading to the deployment of the SIMPLEFIX backdoor. The malware exfiltrates specific file types and establishes communication with a command-and-control server. The campaign aligns with COLDRIVER's known victimology, focusing on civil society members connected to Russia. The group has been active since 2019, using spear-phishing and custom tools like SPICA and LOSTKEYS. 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The PhantomCaptcha campaign targeted Ukrainian regional government administration and organizations critical for the war relief effort, including the International Committee of the Red Cross, UNICEF, and various NGOs. The campaign began on October 8, 2025, and used a malicious "I am not a robot" CAPTCHA challenge to execute a PowerShell command, installing malware on victims' systems. The malware operated in three stages: a downloader script, a reconnaissance module, and a WebSocket-based RAT. The campaign's infrastructure was active for just one day, with backend servers remaining online to manage infected devices. The PhantomCaptcha campaign is linked to a wider operation involving malicious Android apps disguised as adult entertainment or cloud storage services. The latest incidents were reported in May and June 2025 by two organizations, including Reporters Without Borders (RSF). The group is known for impersonating trusted contacts and prompting targets to request missing or malfunctioning attachments. In one case involving RSF in March 2025, a ProtonMail address mimicking a legitimate contact sent a French-language email asking a core member to review a document. No file was attached. When the member requested it, the operators replied in English with a link routed through a compromised website to a ProtonDrive URL. However, the file itself could not be retrieved because ProtonMail had blocked the associated account. A second victim received a file labeled as a PDF that was actually a ZIP archive disguised with a .pdf extension. The final stage of the attack used a typical Calisto decoy PDF that claimed to be encrypted and instructed the user to open it in ProtonDrive. The link again sent the target through a redirector hosted on a compromised website. The phishing kit analyzed by TDR, located on account.simpleasip[.]org, appeared to be custom built. It targeted ProtonMail accounts using an Adversary-in-the-Middle (AiTM) setup that relays two-factor authentication (2FA). Analysts found injected JavaScript designed to keep the cursor locked to the password field and to interact with an attacker-controlled API for handling CAPTCHA and 2FA prompts. Star Blizzard's infrastructure included servers hosting phishing pages and others serving as API endpoints. Many domains were tied to Namecheap services, while some earlier ones were registered via Regway to help analysts track the cluster over time.

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