Decrypt ZIP Files

Preventing a Ransomhub ransomware attack requires a comprehensive cybersecurity structure. Below, we list important points that should be considered.

Organization – Documenting your IT infrastructure greatly aids in prevention, along with organizing networks and computers. It is also essential to develop policies to ensure new employees understand the company’s rules regarding software installation and usage on company devices.

Strong passwords – Passwords should contain more than 8 characters, including both regular and special characters. It’s also important not to reuse the same password across different credentials.

Security solutions – A good antivirus must be installed and kept up to date, as should the operating system. Having a firewall and endpoint protection in place is essential to keep the system secure.

Beware of suspicious emails – One of the most commonly used methods by hacker groups to gain access is through spam email campaigns. That’s why it is vital to implement a security policy and raise awareness among employees to avoid downloading attachments from unknown emails.

Effective backup policies – Backups are one of the most important measures for protecting a company’s data. Even so, many organizations neglect them or follow ineffective backup schedules. We’ve handled cases where both the data and backups were encrypted. It’s crucial to establish a consistent backup update routine and not rely solely on online backups. The best backup structure is the 3x2x1 rule: 3 backups, 2 online, and 1 offline, in addition to maintaining a consistent update schedule.

Caution with unofficial software – Many paid programs are available for free online, such as Windows, Office, and many others. Although they may appear free, these programs can serve as entry points for future hacker attacks. Official software may require investment, but it offers significantly better security than free alternatives.

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

All of these methods have the same goal: to access the victim’s system without being noticed. Ransomware disguises itself within the system to avoid detection by defense mechanisms. In tactics that rely on user action, phishing techniques are applied so the victim unknowingly downloads the ransomware onto their system.

It is important to watch for signs that may indicate an ongoing ransomware attack.

These include increased usage of processing power, memory, and disk access, which may suggest that encryption or data exfiltration by the malware is in progress.

Another way to detect the attack is by observing changes in file extensions, which are a direct result of the encryption carried out by the ransomware. However, this detection method can be more complex in attacks that attempt to mask their activities to avoid detection.

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

In cases where the group behind the attack uses the double extortion tactic—copying and extracting all files and encrypting the original data—the situation becomes even more serious. In addition to encryption, the stolen files will be publicly exposed if the ransom is not paid. In such cases, formatting the affected device is inevitable.