Remove Nulltica Ransomware - Restore .lock Files

Remove Nulltica Ransomware – Restore .lock Files

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This article will aid you remove Nulltica ransomware effectively. Follow the ransomware removal instructions at the end.

Nulltica is the name of a ransomware cryptovirus that shows its ransom note message inside a blue window. The ransomware is a variant of HiddenTear and is written to append the extension .lock to all encrypted files. The Nulltica virus will demand 0.02 Bitcoin as a ransom, which is nearly 90 US dollars at the time of writing. Keep on reading below to see how you could try to potentially restore some of your file data.

Threat Summary

Short DescriptionThe ransomware encrypts files on your computer and displays a ransom message afterward.
SymptomsThe ransomware will encrypt your files and put the extension .lock to them after it finishes its encryption process.
Distribution MethodSpam Emails, Email Attachments
Detection Tool See If Your System Has Been Affected by Nulltica


Malware Removal Tool

User ExperienceJoin Our Forum to Discuss Nulltica.
Data Recovery ToolWindows Data Recovery by Stellar Phoenix Notice! This product scans your drive sectors to recover lost files and it may not recover 100% of the encrypted files, but only few of them, depending on the situation and whether or not you have reformatted your drive.

Nulltica Ransomware – Infection Spread

Nulltica ransomware could spread its infection with various methods. A payload dropper which initiates the malicious script for this ransomware is being spread around the World Wide Web, and researchers have gotten their hands on a malware sample. If that file lands on your computer system and you somehow execute it – your computer system will become infected. You can see the detections of such a file on the VirusTotal service right here:

Nulltica ransomware might also distribute its payload file on social media and file-sharing services. Freeware which is found on the Web can be presented as helpful also be hiding the malicious script for the cryptovirus. Refrain from opening files right after you have downloaded them. You should first scan them with a security tool, while also checking their size and signatures for anything that seems out of the ordinary. You should read the tips for preventing ransomware found in our forums.

Nulltica Ransomware – In-Depth Analysis

Nulltica is a virus that encrypts your files and extorts you to pay a ransom to get them decrypted. Malware researchers have discovered that it is a variant of the HiddenTear open-source project and that its own decryptor might not even work.

Nulltica ransomware might make entries in the Windows Registry to achieve persistence, and could launch or repress processes in a Windows environment. Such entries are typically designed in a way to launch the virus automatically with each start of the Windows operating system.

That ransom note can be viewed right down here:

It reads the following:

Your files have been blocked
Your files is encrypted (AES 256). You need a individual key to unlock your files.
Instruction how to unlock:
1. Create bitcoin wallet (coinbase, bitpay or any else)
2. Pay 50 usd to this wallet (bank card, transfer)
3. Send 50 usd (if you don’t know how many usd = btc – calculate with this website http://www.coindesk(.)com/calculator/ – for now 50 usd = 0.02 BTC
4. Okay, now get your wallet address and put in on the left side, below “If you already paid”
5. Click “unlock and remove the program”
6. That’s it.
Warning: If you already paid and you have information “We don’t have your payment yet”, you must waiting.. (Usually max. 12h)

Pay 50 usd to this BTC address
If you already paid
Enter the bitcoin address which you sent
Unlock and remove the program

The note of the Nulltica ransomware states that your files are encrypted. The ransom stated as payment for potentially unlocking your files is food or BitCoin. However, you should NOT under any circumstances pay any ransom. Your files may not get restored, and nobody could guarantee that. Moreover, giving money to cybercriminals will likely motivate them to create more ransomware viruses or commit other crimes.

Nulltica Ransomware – Encryption Process

As Nulltica ransomware is a HiddenTear variant it could seek to encrypt files with these extensions:

→.txt, .doc, .docx, .xls, .xlsx, .pdf, .pps, .ppt, .pptx, .odt, .gif, .jpg, .png, .db, .csv, .sql, .mdb.sln.php, .asp, .aspx, .html, .xml, .psd, .frm, .myd, .myi, .dbf, .mp3, .mp4, .avi, .mov, .mpg, .rm, .wmv, .m4a, .mpa, .wav, .sav, .gam, .log, .ged, .msg, .myo, .tax, .ynab, .ifx, .ofx, .qfx, .qif, .qdf, .tax2013, .tax2014, .tax2015, .box, .ncf, .nsf, .ntf, .lwp

Every single file that gets encrypted will receive the same extension appended to it, which is .lock. The encryption algorithm which is implemented is undoubtedly AES since it is a variant of the HiddenTear open-source ransomware project. Interestingly enough, if you click on “Unlock” your files will get encrypted further and the extension .unlock will get added. And that is even if you paid the demanded ransom sum.

The Nulltica cryptovirus could be set to erase all the Shadow Volume Copies from the Windows operating system with the help of the following command:

→vssadmin.exe delete shadows /all /Quiet

If the command stated above is executed that would make the encryption process even more efficient as it will eliminate one of the possible ways for restoring your data. If your computer machine was infected with this ransomware and your files are locked, read on through to find out how you could potentially recover your data.

Remove Nulltica Ransomware and Restore .lock Files

If your computer got infected with the Nulltica ransomware virus, you should have a bit of experience in removing malware. You should get rid of this ransomware as quickly as possible before it can have the chance to spread further and infect other computers. You should remove the ransomware and follow the step-by-step instructions guide provided below.


Berta Bilbao

Berta is a dedicated malware researcher, dreaming for a more secure cyber space. Her fascination with IT security began a few years ago when a malware locked her out of her own computer.

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