Decrypt Oracle

Preventing a Ransomhub ransomware attack involves a comprehensive cybersecurity framework. Below, we list important points to consider.

Organisation – Clear documentation of the IT infrastructure significantly helps the prevention process, as does the proper organisation of networks and computers. Establishing rules for new employees to understand the company’s policy regarding the installation and use of software on computers is also essential.

Strong passwords – Passwords should contain more than 8 characters, including standard and special characters. Additionally, it is important not to reuse the same password across multiple credentials.

Security solutions – Reliable antivirus software should be installed and kept up to date, along with the operating system. It is crucial to have a firewall and endpoint protection solutions to ensure continuous system protection.

Beware of suspicious emails – One of the most common methods hackers use for infiltration is spam email campaigns. Therefore, it is vital to establish a security policy and raise awareness among employees to avoid downloading attachments from unknown senders.

Effective backup policies – Backups are among the most important measures to protect a company’s data. Nevertheless, many organisations neglect them or create ineffective backup schedules. We have encountered cases where not only the primary data but also the backups were encrypted. It’s crucial to establish a consistent backup routine and not rely solely on online backups. The recommended backup strategy is the 3x2x1 model: having 3 backups—2 online and 1 offline—and maintaining a consistent backup updating routine.

Caution with unofficial software – Numerous paid software programmes like Windows, Office, and many others are made available for free on the internet. Although they may appear free, these programmes can serve as an entry point for future hacker attacks. Official software requires resources but guarantees significantly higher security compared to free alternatives.

To carry out ransomware attacks, criminals use various strategies such as downloading infected files, malicious links, RDP attacks, spam email campaigns, and others.

All these methods share the same goal: gaining access to the victim’s system without detection. To achieve this, ransomware typically camouflages itself within the system to avoid detection by defence mechanisms. In methods relying on user interaction, phishing tactics are employed to trick the victim into unknowingly downloading ransomware onto their system.

It is important to be aware of certain signs that may indicate an ongoing ransomware attack.

Among these signs are increased consumption of processing resources, memory usage, and disk access, which can suggest that encryption or data exfiltration processes by malware are occurring.

Another way to detect an attack is by observing changes to file extensions, which are a direct result of ransomware encryption. However, this detection method can be more challenging if attackers attempt to mask their activities to avoid detection.

Once data has been encrypted by ransomware, the only apparent way to recover it is by paying the ransom demanded by the criminal group. However, there is no guarantee that the data will actually be released, and furthermore, paying may encourage the group to continue their attacks.

In cases where the attacking group uses the tactic of double extortion—copying and extracting all files before encrypting the original data—the situation becomes even more serious. Besides encryption, stolen files will be publicly released if the ransom is not paid. In such cases, formatting the affected device becomes unavoidable.