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US Sanctions Grinex Crypto Exchange

Arete Analysis

Cybersecurity Trends

On August 14, 2025, the US Treasury Department announced sanctions against the spiritual successor to Garantex, the Grinex crypto exchange. Following law enforcement action against Garantex in March 2025, Grinex was created by Garantex employees to support sanctions evasion efforts. Subsequently, Grinex has become a hot spot for illicitly obtained funds from ransomware, extortion, and other fraudulent activities.

Multi-Step Process

The disruptions of Grinex and Garantex took years to execute and occurred over multiple phases of sanctions and law enforcement actions.

Phase 1 – Initial Sanctions against Garantex
In April 2022, the US Treasury Department sanctioned Estonia-based crypto exchange Garantex. This came after Estonia revoked Garantex’s license in February 2022 due to a lack of anti-money laundering/know-your-customer (AML/KYC) policies. At the time of the sanctions announcement, the Office of Foreign Assets Control (OFAC) assessed Garantex to have facilitated more than $100 million USD in illicit transactions. Interestingly, these sanctions did not inhibit Garantex from continuing their operations in providing cover for criminals and sanctioned customers of the exchange.

However, the sanctions did impact the ransomware landscape. Previously used by big-name ransomware groups such as Conti, LockBit, and Ryuk, the exchange was largely no longer a viable option for groups hoping to stay in business and evade additional law enforcement scrutiny. Groups that continued to utilize the sanctioned exchange or decided to use it later often earned themselves a one-way ticket to organizations’ no-pay lists and became a target for future law enforcement takedowns. Notably, 8Base ransomware was added to Arete’s internal no-pay list in September 2023 following an identified transaction to Garantex. 8Base was then taken down by a law enforcement action in February of 2025.

Phase 2 – Law Enforcement Attempts to Dismantle Garantex
Fast-forward to March 2025, when law enforcement agencies led by the US Secret Service attempted to disrupt the sanctioned crypto exchange by seizing Garantex’s primary domain and over $26 million in cryptocurrency assets. Unfortunately, the operation didn’t entirely disrupt the exchange and led to the unveiling of Grinex, often referred to as Garantex 2.0, later that month. Grinex began serving as the nefarious new arm of Garantex, and operators almost immediately began routing illicit funds through the new exchange.

Phase 3 – US Treasury Sanctions Grinex
This brings us to August 14th, when the US Treasury announced sanctions against the newly formed Grinex crypto exchange, three Garantex executives, and the A7A5 stablecoin, which is discussed in the next section. Currently, Grinex remains operational, and Arete is monitoring for use of the exchange as part of ransomware groups money laundering efforts.

But Wait, There’s More

The A7A5 stablecoin cryptocurrency is designed to track 1:1 with the Russian Ruble and appeared to be transferring funds from Garantex in January 2025, indicating the desire to create a sanction-resistant asset even before the disruption. The A7A5 coin, launched behind a veil of shell companies based in Kyrgyzstan, was adopted as an efficient sanctions evasion tool for individuals looking to cash out their illicitly obtained funds.

Analyst Comments

The identification and subsequent sanctions of Grinex and the A7A5 stablecoin significantly impinge upon cybercriminals’ ability to launder funds. Sanctions announcements especially impact ransomware groups, as many incident response firms, especially ones registered as money services businesses (MSBs), will not facilitate payments to groups using sanctioned infrastructure. The unsealing of indictments against the Garantex leadership and increased spotlight on the use of the A7A5 stable coin as a sanctions evasion tool allow organizations additional opportunities to monitor sanctions exposure and prohibit funds from moving to sanctioned entities. Arete cautions that new money laundering techniques designed to evade sanctions are likely to emerge in the future as cybercriminals continuously evolve their tactics in this space.

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Europol Disrupts AudiA6 Crypto Laundering Service

European authorities have dismantled AudiA6, a major cryptocurrency laundering service linked to ransomware groups and broader cybercriminal networks. Between 2022 and 2025, the platform is believed to have processed over €336 million in illicit funds, enabling threat actors to obscure financial trails and monetize cybercrime proceeds. Its operators are also suspected of running Dark2Web, a dark web forum that facilitated collaboration, services, and connections among cybercriminals globally. This development underscores the expanding role of sophisticated, large-scale cryptocurrency laundering services in sustaining the cybercrime economy, enabling threat actors to obscure illicit funds and evade regulatory controls.

What’s Notable and Unique 

  • Following law enforcement disruption of Cryptex and Garantex, AudiA6 emerged as another platform involved in financial activities linked to ransomware groups. Investigators believe that AudiA6 became a central hub for cybercriminals seeking to launder stolen digital assets while obscuring the transaction trail from authorities.

  • On June 10, 2026, a coordinated operation resulted in two arrests in Georgia, the dismantling of key infrastructure (30+ servers, 25 domains), the freezing or seizure of over €778,000 in crypto, and the takedown of the AudiA6 and Dark2Web platforms. 

Analyst Comments

Ransomware groups and cybercriminal networks are increasingly leveraging sophisticated techniques, including chain-hopping, decentralized exchanges, and mixer-as-a-service platforms, to rapidly move illicit cryptocurrency across multiple blockchains, effectively obscuring transaction trails. Concurrently, the widespread use of fraudulent exchange accounts, mule wallets, and privacy-enhancing tools has elevated cryptocurrency laundering to a core enabler of the cybercrime ecosystem, allowing actors to bypass anti-money-laundering controls at scale. This investigation identified over 6,000 KYC records linked to money-mule accounts, many of which were tied to Russian-speaking intermediaries specifically recruited to facilitate the movement of illicit proceeds. These threat actors systematically used both commercial and domain-controlled email services to establish mule accounts across multiple cryptocurrency platforms. Collectively, these findings underscore the growing scale, coordination, and professionalization of cryptocurrency-enabled crime, highlighting the critical need for sustained, intelligence-led, and internationally coordinated efforts to disrupt these evolving financial ecosystems.

Sources

  • Ransomware gangs cut off from EUR 336 million ‘AudiA6’ crypto laundering pipeline

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Threat Actors Leverage AI for EDR Evasion

A threat actor has developed and deployed a ransomware attack toolkit enhanced with AI-assisted development workflows, enabling automated Active Directory (AD) discovery and improved EDR evasion capabilities. The toolkit leverages agent-based AI systems, such as Claude’s Opus and Cursor agents, for iterative malware development, testing, and refinement. 

What’s Notable and Unique 

  • Researchers have highlighted that this toolkit can not only generate ransomware code but also bypass sophisticated security defenses and identify AD networks for malware distribution. 

  • The framework incorporates multiple capabilities, including automated AD discovery and reconnaissance mechanisms, iterative EDR testing environments to refine evasion techniques, and a command-and-control (C2) infrastructure that leverages Telegram APIs and Cloudflare redirectors for stealth. 

  • Additionally, some agents were tasked with checking security research and technical posts for various bypass techniques. The agents recognized what was required for reproduction, extracted the techniques, mapped them to the MITRE ATT&CK knowledge base of adversary behaviors, set up a test lab, carried out the methodology, and reported the results. 

  • After a few repetitions, the modules seemed to avoid nearly all EDR solutions, despite the agent’s initial suggestion of a high failure rate. Although researchers found no evidence that AI was embedded in deployed malware or was operating independently in victim environments, the technology was still used to accelerate the iterative process of developing, testing, and refining payloads against security products, shortening the period between the publication of offensive security research and its practical implementation by threat actors. 

Analyst Comments 

AI-driven tools like this could accelerate the pace and sophistication of ransomware attacks, enabling even relatively inexperienced actors to launch high-impact campaigns. This development underscores the urgent need for security solutions to adapt to AI-assisted threats. Organizations must respond by strengthening detection engineering, improving visibility across environments, and maintaining robust security fundamentals.  

Sources 

  • AI-built ransomware toolkit automates EDR evasion, AD discovery  

  • Pointing a Cursor at evading detection

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Arete's 2026 Q1 Crimeware Report

Harness Arete’s unique data and expertise on extortion and ransomware to inform your response to the evolving threat landscape.

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CMS Vulnerability Leads to ClickFix Campaign

Threat actors compromised at least 700 education and technology websites in a recent ClickFix campaign by exploiting a critical SQL injection flaw (CVE-2026-26980) in the Ghost content management system (CMS). Adversaries combined the vulnerability with the ClickFix social engineering tactic to steal admin keys and inject a malicious JavaScript that delivers a fake Cloudflare or CAPTCHA verification pop-up, tricking victims into copying and pasting a malicious command into their systems.

What’s Notable and Unique

  • Rather than targeting the end user first, this campaign is unique in its initial exploitation of the system, followed by social engineering attempts. This hybrid attack style is likely being leveraged to bypass traditional defenses.

  • This recent campaign also highlights how trusted web properties can be weaponized at scale and coupled with unpatched CMS vulnerabilities. Rather than using the CMS compromise to perpetrate a single attack, threat actors turned it into a supply-chain attack that ultimately affected over 700 trusted websites.

Analyst Comments

As network defenders and their tools enhance threat detection capabilities, adversaries increasingly seek methods to bypass these defenses. By combining vulnerability exploitation, social engineering techniques, and staging for ancillary attacks, this campaign successfully bypassed traditional defenses and inflicted significant impact. Defending against hybrid cyberattacks requires comprehensive security controls beyond simply patching vulnerabilities. Organizations should focus on limiting movement within the environment, detecting abuse of trusted applications, and preventing end-user manipulation.

Sources

  • 700+ education and tech websites hijacked in huge ClickFix malware campaign

  • Under the engineering hood: Why Malwarebytes chose WordPress as its CMS

  • Think before you Click(Fix): Analyzing the ClickFix social engineering technique

  • Ghost CMS Vulnerability Exploited to Infect 700 Sites With ClickFix Malware