Dirty App Removal: LockBit 4.0 Ransomware

The relentless evolution of ransomware threats continues with the introduction of LockBit 4.0, a particularly menacing strain of malware. Released in February 2024, this new variant was unleashed just days after law enforcement agencies apprehended two operators of the LockBit group. Despite these arrests, the group vowed to press forward, a promise they’ve kept with LockBit 4.0’s emergence.

LockBit 4.0 shares the same core functionality as its predecessors: it encrypts victims’ data and demands a ransom for decryption. However, this version exhibits advanced capabilities, making it a serious threat to businesses and individuals alike. In this blog post, we will explore the anatomy of LockBit 4.0, its ransomware note, how it spreads, and most importantly, how to protect yourself from such malicious software.

How LockBit 4.0 Ransomware Operates

Once LockBit 4.0 infiltrates a system, it begins its malicious task of encrypting files. On an infected machine, users will find their files altered with an additional extension— “.xa1Xx3AXs”—whether it be images, documents, or any other data. For instance, “1.jpg” becomes “1.jpg.xa1Xx3AXs,” rendering the file unusable. Along with this, a ransom note titled “xa1Xx3AXs.README.txt” will appear, signaling the victim that their files are now encrypted and that their sensitive data may have been exfiltrated.

Inside the Ransom Note

The ransom note delivers a chilling message: your data has been compromised, and recovery is only possible with a payment of 1,000 USD in Bitcoin. The note also warns that tampering with or attempting to modify the encrypted files could lead to permanent loss. Worse still, failure to comply could result in repeated attacks on the victim’s systems.

Unfortunately, even if the ransom is paid, there is no guarantee that the attackers will honor their promise to restore the data or delete the stolen content. Supporting cybercriminals by paying the ransom is also inadvisable since it encourages further attacks and perpetuates this illegal activity.

The ransom note reads:

~~~ LockBit 4.0 Ransomware since 2024~~~
>>>> Your data are stolen and encrypted
Price = 1000 $
Bitcoin = 328N9mKT6xFe6uTvtpxeKSymgWCbbTGbK2
Email = jimyjoy139@proton.me
>>>> What guarantees that we will not deceive you?
We are not a politically motivated group and we do not need anything other than your money.

If you pay, we will provide you the programs for decryption and we will delete your data.
Life is too short to be sad. Be not sad, money, it is only paper.

If we do not give you decrypters, or we do not delete your data after payment, then nobody will pay us in the future.
Therefore to us our reputation is very important. We attack the companies worldwide and there is no dissatisfied victim after payment.
>>>> Your personal DECRYPTION ID: –
>>>> Warning! Do not DELETE or MODIFY any files, it can lead to recovery problems!
>>>> Warning! If you do not pay the ransom we will attack your company repeatedly again!

Decryption Without Payment is Unlikely

LockBit 4.0, like most modern ransomware, employs sophisticated encryption algorithms. Unless the ransomware’s developers made a significant error in coding, decryption without their tools is virtually impossible. While some ransomware can be cracked due to flaws, LockBit 4.0’s structure offers no such loopholes.

The only reliable way to regain access to your data without paying a ransom is through backup systems. Keeping regular, offline backups is essential to avoid the devastating consequences of a ransomware attack. However, once the ransomware is on your system, it’s critical to remove it to prevent further damage.

How Does Ransomware Infect Your System?

Cybercriminals often use phishing and social engineering tactics to distribute ransomware like LockBit 4.0. The malware can be hidden in a variety of file types, including ZIP files, executables (.exe), PDFs, and even Microsoft Office documents. Victims might unknowingly download the ransomware from suspicious email attachments or by clicking on misleading links in social media messages.

In addition, drive-by downloads, pirated software, and fake software updates serve as common distribution methods. Some ransomware variants, including LockBit, may even spread through shared networks and external drives, infecting multiple devices within an organization or home network.

How to Protect Yourself from Ransomware

To minimize the risk of falling victim to ransomware, taking proactive measures is essential. Here’s how you can protect yourself from LockBit 4.0 and similar threats:

1. Be Cautious of Suspicious Emails and Links: Always be skeptical of emails from unknown sources. Avoid clicking on links or opening attachments in emails that seem irrelevant or suspicious.
2. Download from Trusted Sources: Ensure that any downloads come from official websites or verified platforms. Avoid downloading software from third-party sites, as they may harbor malicious programs.
3. Update Software and Systems Regularly: Keeping your operating system, software, and antivirus programs updated is vital. Cybercriminals often exploit vulnerabilities in outdated software to gain access to systems.
4. Use a Reliable Anti-Malware Program: A reputable anti-virus or anti-malware program is your first line of defense. Perform regular scans to detect and eliminate potential threats before they can do harm. If you’re already infected, running a trusted anti-malware solution like SpyHunter can remove LockBit 4.0 and prevent it from encrypting additional files.
5. Back Up Data Regularly: Store your important data in multiple locations, including offline storage or cloud backups. This simple practice can save you from significant losses if you’re ever targeted by ransomware.

Don’t Give In to Ransom Demands

Ransomware attacks like LockBit 4.0 represent a serious threat to personal and professional data. However, paying the ransom only fuels further attacks, with no guarantees that you’ll get your files back. The best strategy is prevention—stay vigilant, back up your data, and invest in solid anti-malware protection. Should LockBit 4.0 or any ransomware strike, swift action using reliable tools like SpyHunter can help mitigate damage and protect your system.