Ransomware protection starts before data is encrypted

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A ransomware attack can start with a seemingly minor incident: opening a malicious attachment, a compromised user account, exploiting a system vulnerability, or gaining access to an inadequately secured device.

Once inside the environment, attackers may spend time reconnoitering the infrastructure, escalating privileges, and seeking access to critical systems. They may also attempt to disable security mechanisms, delete backups, or prepare a simultaneous attack on multiple devices.

Data encryption itself often occurs only at the very end of this process.

This is why ransomware protection covers several different security areas. Endpoint protection detects suspicious activity at the device and server level. Network security limits communication and lateral movement between systems. Identity protection mechanisms make it harder to exploit compromised accounts. Monitoring systems allow for the correlation of information from various sources to identify unusual activity more quickly.

Backups and data recovery procedures are also a vital part of the overall environment. In the event of a major incident, every hour saved in restoring critical systems counts.

A well-designed security strategy allows you to stop threats at various stages and minimize their impact on your organization's operations.

squareTec designs and integrates these environments, tailoring security architecture to your existing infrastructure, systems, and organizational requirements.

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How does ransomware protection work?

A ransomware attack can unfold in several stages. At each stage, an organization has different opportunities to detect the threat and mitigate its consequences.

Preventing unauthorized access

The first task is to limit the entry points into the organization's environment. In practice, this includes email and web traffic protection, endpoint security, vulnerability management, and access control.

The way privileged accounts are managed is also critical. A compromised administrator account can give an attacker significantly more leverage than a standard user account.

Detecting suspicious activity

Not every attack can be identified based on a specific file or known signature. In many cases, the behavior of a device, user, or application is a more important indicator.

Mass file modifications, unusual process execution, attempts to gain elevated privileges, or communication with unknown resources may indicate an ongoing incident.

The sooner such behavior is detected, the more options the organization has at its disposal.

Limiting the spread of an attack

Once access is gained, an attacker may attempt to move from one device to other systems. In a large organization, this can mean the gradual takeover of successive infrastructure segments.

Network segmentation, communication control, and properly defined permissions limit the possibility of such lateral movement.

This is particularly important in environments where, alongside classic IT infrastructure, OT systems, IoT devices, automation systems, or technical security solutions are in operation.

Isolation and response

Once a threat is detected, the time taken to take action is critical.

Depending on the architecture in place, you can isolate a device, block specific communication, revoke permissions, or stop a suspicious process.

Some of these actions can be automated. Others require a decision from the security team and an understanding of the dependencies between systems.

Restoring operations

Backups are a fundamental element of an organization's ransomware preparedness. They should be properly protected, separated from the main environment, and regularly tested for data recoverability.

The order of system restoration is equally important. In a large organization, not all applications are equally critical to operations. A pre-prepared list of critical systems and a recovery procedure help reduce the time needed to return to normal operations.

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Ransomware protection in IT, OT, and security system environments

A large organization's infrastructure often includes much more than just user computers and servers.

Depending on the business, it may include IT systems, OT environments, IoT devices, video surveillance, access control, automation systems, application servers, and solutions distributed across multiple locations.

Each of these elements has its own requirements regarding availability, updates, communication, and security methods. In an operational environment, you cannot always simply turn off a device, change its configuration, or perform an update without first analyzing the impact on the entire system's operation.

Therefore, the security architecture should take into account the actual dependencies between systems.

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Security system integration

Large organizations often run multiple security solutions simultaneously, including endpoint protection, firewalls, EDR or XDR, IAM systems, email security, backups, SIEM, and infrastructure monitoring tools.

Each of these provides different information. One might detect a suspicious login, another an unusual process on a computer, and a third communication with a suspicious address.

Combining this information provides a broader view of an incident and a better assessment of its scope.

squareTec integrates solutions from various vendors with an organization's existing infrastructure. Depending on the project, the architecture may include XDR, SIEM, IAM, network, endpoint, and infrastructure protection solutions, among others.

The choice of technology depends on the client's environment, their requirements, and the systems already in place within the organization.

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Preparing your organization for a ransomware incident

Technology is only one part of preparing for an attack. It is equally important to define how to proceed once a threat is detected.

It is worth defining in advance:

• which systems are critical to the organization's operations,
• which devices and network segments can be isolated,
• who is authorized to make the decision to shut down a system,
• which data requires priority restoration,
• where backups are located,
• what the system restoration process looks like,
• which teams should be involved in incident response.

A well-prepared process like this helps reduce the time needed to make decisions during an actual event.

This is particularly important for large organizations, as a single incident can simultaneously affect multiple locations, systems, and teams.

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How do we help protect your organization against ransomware?

We design and integrate a protection environment tailored to your organization's infrastructure, systems, and operational workflows.

The scope of work may include:

• Security analysis – an assessment of your current architecture, configuration, and the way your most critical assets are protected.
• IT and OT network segmentation – isolating environments and restricting communication between systems that should not have direct access to one another.
• Email protection – mitigating risks associated with phishing, malicious attachments, and links.
• Workstation and server protection – detecting and blocking suspicious processes and behaviors.
• Backup and disaster recovery – securing data backups and preparing the environment for the restoration of critical systems.
• SOC integration – forwarding and correlating event information and supporting incident response processes.
• Incident response procedures – preparing action scenarios, isolating compromised assets, and restoring systems.