Overview
Ransomware continues to evolve as one of the most persistent and adaptive cyber threats. In 2026, the landscape is marked by both a decline in attack frequency and an increase in sophistication. Attackers are deploying new tactics such as post-quantum cryptography, encryptionless extortion, and systematic evasion of endpoint defenses. This guide provides security professionals with a detailed, step-by-step approach to understanding these trends and implementing effective countermeasures. Based on Kaspersky's annual report and targeted for International Anti-Ransomware Day, this tutorial will help you stay ahead of the curve.
Prerequisites
- Basic understanding of cybersecurity concepts (malware, encryption, network defense)
- Familiarity with endpoint protection platforms (EPP) and endpoint detection and response (EDR)
- Knowledge of remote access protocols, particularly Remote Desktop Web (RDWeb)
- Access to threat intelligence feeds (optional but recommended)
Step-by-Step Instructions for Understanding and Mitigating Ransomware in 2026
Step 1: Recognize the Decline but Maintain Vigilance
According to Kaspersky Security Network, the percentage of organizations affected by ransomware decreased in 2025 across all regions compared to 2024. However, this does not mean the threat is diminishing. Attackers are refining their tactics and scaling operations. In the manufacturing sector alone, ransomware caused over $18 billion in losses in the first three quarters of the year. Use the regional data (available for download from Kaspersky) to benchmark your organization's risk. Action item: Review your industry-specific attack statistics and adjust your risk assessment accordingly. Do not let a decline in aggregate numbers lull you into complacency; the likelihood of a targeted attack remains high.
Step 2: Defend Against EDR Killers and Defense Evasion
In 2026, ransomware operators increasingly prioritize neutralizing endpoint defenses before executing payloads. Tools known as "EDR killers" have become standard components of attack playbooks. Attackers attempt to terminate security processes and disable monitoring agents, often by exploiting trusted components such as signed drivers through the Bring Your Own Vulnerable Driver (BYOVD) technique.
How it works: An attacker leverages a legitimate but vulnerable driver signed by a trusted vendor to execute code in kernel mode, then uses that access to terminate EDR processes. For example, they might load a signed driver that allows arbitrary memory access and then call TerminateProcess on security software. Mitigation: Enable Driver Blocklists in your EDR solution to prevent known vulnerable drivers from loading. Implement Application Control to allow only signed and approved executables. Regularly update driver blocklist policies and monitor for anomalous driver load events. Consider using Microsoft's recommended driver block rules or third-party tools that maintain hashes of vulnerable drivers.
Step 3: Prepare for Post-Quantum Cryptography Ransomware
As predicted, advanced ransomware groups have begun using post-quantum cryptography (PQC) to make decryption nearly impossible without paying. The PE32 family, for example, leverages the ML-KEM (Module-Lattice-Based Key-Encapsulation Mechanism) standard. This algorithm is resistant to both classical and quantum computing attacks, meaning even if you have a quantum computer, you cannot break the encryption.
Implications: Traditional brute-force or key-recovery methods become ineffective. Mitigation: Adopt quantum-safe encryption for your backups and critical data. Use forward secrecy in TLS connections to protect data in transit. Evaluate your encryption strategy now, as PQC is becoming standardized (e.g., NIST's chosen algorithms). Test your recovery procedures with the assumption that data encrypted by such ransomware cannot be decrypted without the attacker's key. Focus on prevention and robust offline backups that are immutable and regularly tested.
Step 4: Address Initial Access Brokers and RDWeb Vulnerabilities
Initial access brokers (IABs) remain a critical part of the ransomware ecosystem. In 2026, they show an increased focus on gaining access to RDWeb as the preferred method for remote access. RDWeb exposes a web interface for Remote Desktop Services, which if misconfigured or unpatched, can be exploited by IABs to infiltrate networks.
How attackers do it: They scan for exposed RDWeb portals, then use credential stuffing, brute force, or exploit known vulnerabilities (e.g., CVE-2020-0610) to gain a foothold. Once inside, they escalate privileges and sell access to ransomware operators. Mitigation: Secure RDWeb by enforcing multi-factor authentication (MFA) for all remote access. Use network-level authentication (NLA). Limit exposure by placing RDWeb behind a VPN or zero-trust network access (ZTNA) solution. Regularly scan for and remediate CVEs. Monitor authentication logs for repeated failures or unusual login times.
Common Mistakes
- Ignoring the decline trap: Assuming a lower overall attack rate means your organization is safe. Keep defenses up to date.
- Overlooking EDR killers: Not implementing driver blocklists or application control allows attackers to evade detection. Ensure your EDR solution is hardened.
- Neglecting post-quantum readiness: It is only a matter of time before PQC ransomware becomes widespread. Start planning your migration to quantum-safe encryption now.
- Underestimating RDWeb exposure: Exposed RDWeb without MFA is a common entry point. Use least-privilege access and continuous monitoring.
- Failing to test backups: Many organizations assume backups are safe, but they are often targeted first. Test your ability to restore from offline, immutable backups.
Summary
Ransomware in 2026 is defined by a decline in attack frequency but a rise in sophistication. Attackers are using EDR killers, post-quantum cryptography, and focusing on RDWeb for initial access. By following the steps in this guide—maintaining vigilance, defending against defense evasion, preparing for PQC, and securing remote access—you can significantly reduce your organization's risk. No single measure is sufficient; a layered defense that includes regular testing and threat intelligence is essential. Stay proactive, not reactive.