Brinztech Alert: New Corporate VPN Scan System Script Sale is Detected

Dark Web News Analysis

A new Python-based script is being sold on a known hacker forum, designed to automate the scanning and exploitation of corporate VPN networks. According to the seller’s post, the tool, which is marketed to penetration testers, can test for VPN access using FortiClient, discover internal network ranges, and automatically scan for critical, high-impact vulnerabilities like ZeroLogon and PrintNightmare using tools like NetExec. The script is designed to report its findings directly to the operator via Telegram.

The emergence of this type of automated attack tool represents a significant threat to any organization that relies on a VPN for remote access. By packaging reconnaissance, vulnerability scanning, and reporting into a single, easy-to-use script, the actor has created an “Attack-in-a-Box” that dramatically lowers the time and skill required for a malicious actor to find an entry point into a corporate network.

Key Cybersecurity Insights

The appearance of this new tool presents several critical risks for businesses:

• An Automated “Attack-in-a-Box” for Network Breaches: The primary and most severe risk is that this script is a fully automated attack chain. It allows an attacker to simply point the tool at a target and wait for a notification that a vulnerable entry point has been found, significantly accelerating the initial stages of a network compromise.
• Weaponizes Known, High-Impact Vulnerabilities: The script’s focus on well-known and devastating vulnerabilities like ZeroLogon (which can allow for instant domain controller takeover) and PrintNightmare (for privilege escalation) indicates it is designed for maximum impact. It specifically targets organizations that have failed to perform basic, critical patching.
• Lowers the Barrier for Entry for Ransomware Gangs: An affordable, automated tool like this is a massive force multiplier for ransomware gangs and Initial Access Brokers (IABs). It allows less-skilled actors to efficiently find vulnerable networks, which they can then breach and either deploy ransomware themselves or sell the access to a more sophisticated group.

Mitigation Strategies

To combat the threat posed by these automated scanning tools, all organizations that use a VPN for remote access must prioritize foundational security hygiene:

• Assume Your VPN is Being Scanned: Mandate MFA: Every organization must operate under the assumption that its VPN is being constantly scanned by tools like this. The single most effective defense against the most common VPN attacks is to enforce Multi-Factor Authentication (MFA) for all remote access.
• Aggressive Patch Management is Non-Negotiable: The tool explicitly targets old, high-severity vulnerabilities. This highlights the absolute necessity of a robust and aggressive patch management program. Critical vulnerabilities like ZeroLogon and PrintNightmare must be patched immediately upon release across all relevant systems.
• Implement Network Segmentation and EDR: A VPN breach should not lead to a full network compromise. Network segmentation is critical to contain an intruder and prevent them from moving laterally from the VPN landing zone to critical servers. Endpoint Detection and Response (EDR) solutions are also key to detecting and stopping the post-exploitation activities of tools like NetExec.

Secure Your Organization with Brinztech As a cybersecurity provider, we can protect your business from the threats discussed here. Contact us to learn more about our services.

Questions or Feedback? For expert advice, use our ‘Ask an Analyst’ feature. Brinztech does not warrant the validity of external claims. For general inquiries or to report this post, please email us: contact@brinztech.com