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Home News

Monolock Ransomware Sold Online

October 22, 2025
Reading Time: 3 mins read
in News
Hackers Make 520K At Pwn2Own

Recent underground cybercrime activity highlights the emergence of Monolock Ransomware V1.0, which is now reportedly available for purchase on various dark web marketplaces. Cybersecurity researchers monitoring these illicit channels confirm that sellers are advertising a fully functional ransomware toolkit, which includes all necessary components like robust encryption modules, secure key exchange protocols, and a proprietary administrative panel for managing operations. This sudden availability has triggered significant alarm within the security community, prompting urgent calls for heightened vigilance and a reinforcement of defensive security measures across all sectors.

In encrypted threads, an anonymous vendor known as “monolocksupp” detailed the ransomware’s sophisticated features. The advertisement claims the toolkit uses multi-threaded AES-256 encryption, offers compatibility across Windows and Linux environments, and employs a GoLang command-and-control framework. The seller boasts that the encryption of victim files occurs in seconds, with a highly secure inline public key block designed to prevent third-party interception of the exchange keys. Samples shared demonstrate a minimalist user interface, real-time logging of encryption processes, and a key kill-switch detection feature that is purported to halt anti-virus processes before the deployment of the payload, indicating a focus on evading standard endpoint defenses.

The cost for the ransomware varies widely, priced between 2.5 and 10 Bitcoin, depending on the level of access a buyer desires. The most basic package provides the core ransomware binary and the public key required for encryption. However, premium tiers significantly enhance the offering by including the full decryption panel, an affiliate tracking system for revenue sharing among operators, and a dedicated customer support channel for operational assistance. Threat intelligence firm CypherWatch notes that even the entry-level price, which translates to thousands of dollars, suggests the developers are highly confident in the tool’s effectiveness and the profitability of their ransomware-as-a-service model. The high price tag also signals a deliberate effort to attract serious, well-funded threat actors rather than casual cybercriminals.

The appearance of Monolock V1.0 introduces a substantial risk to enterprises, especially when compared to well-understood legacy ransomware strains for which mitigation strategies are established. Experts point to the inclusion of novel evasion and distribution tactics, most notably an automatic torrent-based distribution feature that allows the payload to spread rapidly and laterally across network shares within an organization. Furthermore, the ransomware reportedly includes support for targeting modern cloud storage platforms, such as AWS S3 and Google Cloud Storage, allowing for both data exfiltration and encryption in cloud environments. These advanced capabilities mean that organizations lacking robust outbound traffic monitoring or proper network segmentation are particularly vulnerable to a large-scale compromise.

In response to the threat, cybersecurity teams are strongly urged to immediately review and update their existing incident response frameworks. It is critical that Endpoint Detection and Response (EDR) tools are configured to actively flag unusual or unauthorized encryption processes and anomalous file renaming patterns associated with ransomware activity. The cornerstone of defense remains robust, regular backups stored with offline access and immutable snapshots, which ensure an organization can fully recover without having to concede to the extortion demands. Additionally, network defenders must increase their vigilance by conducting frequent threat-hunting exercises focused on identifying subtle, unusual lateral movement that could signal the initial stages of a Monolock deployment.

Law enforcement agencies and industry groups are actively collaborating to track the anonymous sellers, disrupt the distribution channels, and dismantle the supporting infrastructure. Given the international nature of dark web financial transactions, global cooperation will be paramount to intercepting payments and identifying the operators behind the ransomware. Simultaneously, security researchers have begun the process of reverse-engineering any leaked samples of the malicious software. This essential work aims to develop and release indicators of compromise (IoCs) and, eventually, a free decryption tool for the wider public. As Monolock Ransomware V1.0 increasingly permeates underground forums, organizations must not only elevate their immediate defenses but also maintain a perpetually proactive security posture to counter the continuous evolution of the sophisticated ransomware threat landscape.

Reference:

  • Threat Actors Reportedly Marketing Monolock Ransomware On Dark Web Forums
Tags: Cyber NewsCyber News 2025Cyber threatsOctober 2025
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