Critical Infrastructure Under Siege: APT Attacks Escalate in Latin America

Executive Summary

Advanced Persistent Threats (APTs) have intensified their operations against critical infrastructure in Latin America, focusing on sectors such as power grids, water systems, industrial control systems (ICS), healthcare, and the financial sector. These sophisticated attacks aim to disrupt essential services, steal sensitive data, and achieve geopolitical objectives.

Targeted Sectors and Recent Incidents

• Power Grids and Water Systems: APT groups have increasingly targeted industrial control systems (ICS) within the power and water sectors. These attacks often exploit vulnerabilities in outdated systems and poor cyber hygiene practices. For instance, in September 2024, the Arkansas City Water Treatment Facility in the United States experienced a cyberattack that forced a switch to manual operations, highlighting the sector's vulnerabilities. (ibm.com)

• Industrial Control Systems (ICS) and SCADA: The rise in cyberattacks on ICS and SCADA systems has blurred the lines between cyber and physical attacks. Attackers aim to gain control over critical physical assets, such as power plants and substations, potentially leading to service disruptions or destruction. (deloitte.com)

• Healthcare Sector: In September 2025, Brazilian healthcare software provider MedicSolution was hit by the ransomware group KillSec, exposing sensitive patient data across hospitals and clinics. This incident underscores the sector's vulnerability to cyber threats. (privatebank.jpmorgan.com)

• Financial Sector: In the same month, Brazilian authorities uncovered a breach in the PIX instant payment system, where insiders and hackers stole approximately $100 million USD. This prompted the Central Bank of Brazil to announce immediate measures to enhance financial system security. (privatebank.jpmorgan.com)

Notable Threat Actors

• BlindEagle (APT-C-36): A Latin American cyber espionage group targeting government, telecom, finance, and critical infrastructure through spear-phishing campaigns that deliver remote access trojans such as Gh0stCringe and Remcos. Their intrusions are often strategically timed to coincide with regional political and economic events. (obsidiansecurity.com)

• Chinese APT Groups: China-aligned APT groups have been observed targeting Latin American governments to advance geopolitical objectives. These groups employ sophisticated techniques, including adversary-in-the-middle attacks, to infiltrate networks and exfiltrate sensitive data. (eset.com)

Tactics, Techniques, and Procedures (TTPs)

APT groups employ a range of TTPs to infiltrate and exploit critical infrastructure:

• Spear-Phishing: Crafted emails designed to deceive recipients into executing malicious payloads.

• Exploitation of Vulnerabilities: Targeting unpatched systems and software to gain unauthorized access.

• Use of Remote Access Trojans (RATs): Deploying malware like Gh0stCringe and Remcos to maintain persistent access.

• Living-off-the-Land (LOTL) Techniques: Utilizing existing network tools and protocols to evade detection.

Recommendations

To mitigate the risks posed by APTs targeting critical infrastructure, organizations should consider the following measures:

• Regular System Updates: Ensure all systems, especially ICS and SCADA, are up-to-date with the latest security patches.

• Network Segmentation: Isolate critical systems from general network traffic to limit potential attack vectors.

• Employee Training: Conduct regular cybersecurity awareness programs to recognize and respond to phishing attempts.

• Incident Response Planning: Develop and regularly update incident response plans to address potential breaches swiftly.

By implementing these strategies, organizations can enhance their resilience against APTs and safeguard essential services.

Conclusion

The escalation of APT attacks on critical infrastructure in Latin America underscores the need for heightened vigilance and proactive cybersecurity measures. As threat actors continue to evolve their tactics, a comprehensive and adaptive approach to cybersecurity is essential to protect vital sectors and maintain public trust.

Highlights:

• New APT group breached gov and critical infrastructure orgs in 37 countries | CSO Online, Published on Wednesday, February 04
• , Published on Monday, March 10
• ESET Research APT Report: Russian attacks surge in Ukraine and Europe; Chinese groups target Latin American governments | | ESET, Published on Wednesday, November 05