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SIEM vs. XDR: Advances in Security Monitoring and Cyber Defense

Arete Analysis

Cybersecurity 101

The cybersecurity industry is chockfull of jargon, abbreviations, and acronyms. So much so that it can often be difficult to decide which tools may provide the best protection for your company. To help, we’d like to clarify some terms and review the benefits of a few solutions.

Let’s begin with SIEMs

Security information and event management (SIEM) technology has been around for a long time. Having evolved from log aggregation, log management, and event management, SIEMs serve to collect, aggregate, analyze, and store large volumes of log data from across numerous systems.

SIEM vendors began by taking a broad approach and collecting available log and event data from almost any source across an enterprise. Over time, they extended a SIEM’s reach from the office to the manufacturing floor and beyond. The goal was to gain more complete visibility across an organization’s landscape — from firewalls and switches to operating systems and applications. Unfortunately, the level of detail in the data from each source is typically low. In other words, SIEMs provide wide, but shallow data sets, which requires far more work to derive meaning from them — and work is time and money.

Not only can it take years to map all the low–resolution log data to a meaningful alert, but also, with COVID–19 creating the new work–from–home norm, companies are now gathering far few system logs. Thanks to alternative, cloud–based solutions, many users simply never need a virtual private network (VPN) to communicate back to the company network.

Even though many SIEM solutions are adding agents to endpoints to gather and push logs to a cloud collector, if a person is working from home and not accessing the network for data, why create alerts from that computer’s logs if they don’t affect the security of the internal network? This would require a security engineer to further tune segregation issues — and that’s if you’re lucky enough to have an engineer on staff.

The advantages of EDR and XDR

Today, extended detection and response (XDR) tools are gaining traction. As the name would imply, they are an evolution of endpoint detection and response (EDR) tools, which combine antivirus with post–detection analysis capabilities — for example, enhanced alerting, automatic stopping and quarantining of malicious behavior, signature– and threat intelligence–based detection, and full–blown artificial intelligence on systems for autonomous operations.

While an XDR solution may appear similar in function to a SIEM platform, it offers much more. And that’s why Arete chooses to use XDR with our Managed Detection and Response (MDR) service.

The XDR console lives in the cloud to allow for fast, accurate reporting on what’s occurring across your entire pool of assets. In fact, it provides rich metadata on every event that occurs on monitored endpoints; records every DNS request, file access, and intercommunication between computers; and uses artificial intelligence to detect inappropriate actions by programs and scripts, stopping them before they can affect the kernel or memory.

XDR can also threat hunt for indicators related to attack precursors, which allows us to notify you of inappropriate communications coming through your firewalls or from unprotected endpoints that may be connected to your environment. It also static detects badness as malicious actors touch or execute files. In short, it’s hard to hide from XDR — and in using it to protect the core systems that contain your data, Arete protects your ability to do business.

Other advantages XDR has over SIEMs include:

  • The ability to detect all assets on networks where company computers with the agent reside.

  • USB control to prevent exfiltration.

  • Firewall control native to Windows systems.

  • Network interface card control to stop communications in an emergency.

  • Vulnerability data on all covered Windows, Linux and Mac systems.

XDR tools are not only capable of reporting on ransomware damage, but their autonomous behavior-based capabilities can detect and stop ransomware before it can cause any damage.

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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

Article

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

Article

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.

Article

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