Ransomware Groups Exploit Zero-Day Vulnerabilities in Africa

Introduction

In early 2026, ransomware groups have intensified their operations in Africa, leveraging unpatched zero-day vulnerabilities to infiltrate networks, exfiltrate sensitive data, and demand substantial ransoms. This trend underscores the evolving tactics of cybercriminals and the pressing need for robust cybersecurity measures across the continent.

Exploitation of Zero-Day Vulnerabilities

Zero-day vulnerabilities are previously unknown flaws in software that attackers can exploit before developers release patches. The exploitation of these vulnerabilities has become a prevalent tactic among ransomware groups targeting African organizations.

For instance, in May 2025, a critical zero-day vulnerability in SAP NetWeaver (CVE-2025-31324) was exploited by multiple threat actors, including ransomware groups and Chinese Advanced Persistent Threats (APTs). This flaw allowed unauthenticated attackers to upload malicious binaries, leading to the deployment of webshells and subsequent lateral movement within networks. (securityweek.com)

Notable Ransomware Groups Operating in Africa

Several ransomware groups have been identified as active in Africa, employing sophisticated techniques to exploit zero-day vulnerabilities:

• Yurei: An emerging ransomware group that has steadily expanded its operations through 2025, with a growing focus on industrial, food supply, and retail sectors. Yurei has claimed multiple victims, including The Promise Nigeria Ltd in Nigeria, indicating a geographically diverse targeting pattern across Africa. (cyfirma.com)

• Clop: Known for its aggressive exploitation of zero-day vulnerabilities, Clop has targeted various sectors globally. In 2023, Clop exploited a zero-day vulnerability in the GoAnywhere MFT secure file transfer tool, breaching over 130 organizations. (en.wikipedia.org)

Exploit Broker Transactions

The dark web has seen a surge in exploit broker transactions, with cybercriminals actively buying and selling zero-day vulnerabilities. Between January 2023 and September 2024, Kaspersky identified 547 listings for exploits targeting software vulnerabilities, with half involving zero-day and one-day vulnerabilities. The average cost for remote code execution exploits was approximately $100,000. (kaspersky.co.za)

These transactions facilitate the rapid dissemination of zero-day exploits, enabling ransomware groups to deploy attacks more efficiently. The high demand and substantial financial incentives have led to a thriving market for such vulnerabilities.

Impact on African Organizations

The exploitation of zero-day vulnerabilities by ransomware groups has had a profound impact on African organizations:

• Data Breaches: Sensitive information, including personal data and intellectual property, has been exfiltrated, leading to privacy violations and potential regulatory penalties.

• Financial Losses: Ransom demands have ranged from hundreds of thousands to millions of dollars, placing significant financial strain on organizations.

• Operational Disruption: The deployment of ransomware has led to system outages, hindering business operations and affecting service delivery.

Mitigation Strategies

To counter the threat posed by ransomware groups exploiting zero-day vulnerabilities, African organizations should consider the following measures:

• Regular Patching: Implement a robust patch management process to ensure timely updates of software and systems, reducing the window of opportunity for attackers.

• Network Segmentation: Divide networks into segments to limit lateral movement of attackers and contain potential breaches.

• Employee Training: Conduct regular cybersecurity awareness programs to educate staff about phishing attacks and safe online practices.

• Incident Response Planning: Develop and regularly update incident response plans to ensure a swift and coordinated response to security incidents.

Conclusion

The exploitation of zero-day vulnerabilities by ransomware groups in Africa represents a significant and evolving threat. By understanding the tactics employed by these cybercriminals and implementing comprehensive cybersecurity measures, organizations can enhance their resilience against such attacks.

Ransomware Groups Intensify Zero-Day Exploitation in Africa:

• TRACKING RANSOMWARE : August 2025 - CYFIRMA, Published on Wednesday, September 10
• Ransomware Groups, Chinese APTs Exploit Recent SAP NetWeaver Flaws - SecurityWeek, Published on Wednesday, May 14
• Kaspersky: Half of dark web exploit listings target zero-day vulnerabilities, Published on Wednesday, October 02