Lkfr Virus Ransomware (.lkfr File) Removal

Lkfr Virus is a strain within the STOP/Djvu Ransomware family, employing the Salsa20 encryption algorithm to encrypt files on compromised systems. Victims are coerced into paying a ransom ranging from $499 to $999 in Bitcoins for the decryption key.

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About Lkfr Ransomware:


NameLkfr Virus
Version0852
File Extension.lkfr
Contact[email protected], [email protected]
FamilySTOP/Djvu Ransomware
Note_readme.txt
Offline IDOxV6DGl22io8sqMOW1zCCOlzPiv4f1Vqzw7Y8zt1
Last seenMarch 02, 2024
AlgorithmSalsa20 encryption. If Lkfr cannot establish a connection to crooks server before starting the encryption process, it uses the offline key. This key is the same for all victims(!), making it possible to decrypt .lkfr files in the future.
RansomFrom $499 to $999 (in Bitcoins)
Damage
  1. ⮞ Can delete Volume Shadow copies to make victim’s attempts to restore data impossible;
  2. ⮞ Adds a list of domains to HOSTS file to block access to certain security-related sites;
  3. ⮞ Installs password-stealing trojan virus, like Redline Stealer, Vidar Stealer, Smokeloader, Azorult and others;
DistributionThird-party downloaders, installers, peer-to-peer networks, RDP exploits, etc.,
RSA Public Key-----BEGIN PUBLIC KEY----- MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAwI8+Dlm0AebHNc+sM8ZM qTfMPFXziucC5WWh6k57XBroAW5URhbCROFcFPaXcl9l8ljqMtPK4W0QcolIzSem C4ZvoPI0VpJDS+yC6JRbrEG5oebbP9oxk3/Btl6aDIR4hDRmOH1/7onSe1ROcelJ QyIvh16XAWN4foH3o5j5GuSk4fNAVK39bLYFTiYR3Sbxbsie55xmjzLzAFqdvTlm ShNeqKq3VWjZZy4jLKvWt/DP6eAayxdjnDFtcGlQ8OlrHK0r/btBvzZZAajND56p wsm9OnavoKj/ohDivib8gVpJBrPAMu7YAuB8mowBno/eSxgHFFvIdrP/apPs6tMA KwIDAQAB -----END PUBLIC KEY-----
Other variants
  • Lkhy Ransomware (.lkhy encrypted files)
  • Ldhy Ransomware (.ldhy encrypted files)
  • Cdxx Ransomware (.cdxx encrypted files)
  • Lkfr Virus (.lkfr File): How Does Ransomware Works & What To Do?

    What is Lkfr ransomware?

    The Lkfr virus can accurately be categorized as ransomware. It encrypts your files and then demands a ransom for their release. Lkfr is part of the STOP/Djvu ransomware family, currently among the most prolific. This group predominantly preys on individuals downloading software from third-party websites.

    During an attack by the Lkfr malware, your files are encrypted using the Salsa20 algorithm. This encryption technique implies approximately 2^256 possible decryption keys, equating to a 78-digit number. Regrettably, obtaining the key through brute force or other common hacking methods is practically unfeasible.

    The distribution method of the Lkfr malware is critical to understand. It's established that dubious websites offering "cracked" software and unreliable tools are the main distribution channels for the entire STOP/Djvu family, and Lkfr is no exception. This ransomware is typically embedded in software presented as "free", despite being paid products on official sites. Users who bypass license verification in these programs inadvertently incorporate malware into the "final product", as virus developers compensate them for this. Similarly, questionable tools like cheat engines, Windows activators, or keygens often require disabling your antivirus software, leaving you vulnerable and likely unaware of the infection until it's too late.

    Encryption process

    The Lkfr ransomware uses the Salsa20 encryption algorithm. That is not the strongest method, but it still provides an overwhelming amount of possible decryption keys. To brute force the 78-digit number of keys, you need 3.5 unvigintillion years (1*10^65), even if you use the most powerful regular PC. Quantum computers can show a bit better results, but it is still too slow to get your files back while you are alive.

    The exact algorithm of encryption is next: malware scans each folder for the files it is able to encrypt. Then, when it finds the target, it makes a copy of your file, removes the original one, encrypts the copy and leaves it instead of the removed original. Such a procedure is done to prevent the situation when you have already opened the file, so ransomware is not able to read it because of the Windows restrictions. To each encrypted copy, the virus adds the specific extension - ".lkfr". Then, ransomware creates a _readme.txt file in the folder where the encrypted file is located, and goes to the next folder.

    .LKFR Files

    Such an encryption method can be exploited for file recovery. Since the original file is deleted, you may try to recover it using the file recovery tools. The less time is passed - the bigger the chance to get your files back, so hurry up!

    Another specific moment that can help you to use the files even after the encryption is the fact that Lkfr ransomware encrypts only the first 150KB of each file. Hence, you can try to run a big file, such as video or music, without the encryption. Similar feature also works with other ransomware families - Dharma, Conti and Makop encrypt the same 150KB.

    Ransom note: _readme.txt

    Ransom note is the same for the whole ransomware family. In fact, it is one of the main signs of to which family the certain ransomware belongs. Here is the typical note for STOP/Djvu family:

    ATTENTION!

    Don't worry, you can return all your files!
    All your files like pictures, databases, documents and other important are encrypted with strongest encryption and unique key.
    The only method of recovering files is to purchase decrypt tool and unique key for you.
    This software will decrypt all your encrypted files.
    What guarantees you have?
    You can send one of your encrypted file from your PC and we decrypt it for free.
    But we can decrypt only 1 file for free. File must not contain valuable information.
    Do not ask assistants from youtube and recovery data sites for help in recovering your data.
    They can use your free decryption quota and scam you.
    Our contact is emails in this text document only.
    You can get and look video overview decrypt tool:
    https://we.tl/t-uNdL2KHHdy
    Price of private key and decrypt software is $999.
    Discount 50% available if you contact us first 72 hours, that's price for you is $499.
    Please note that you'll never restore your data without payment.
    Check your e-mail "Spam" or "Junk" folder if you don't get answer more than 6 hours.


    To get this software you need write on our e-mail:
    [email protected]

    Reserve e-mail address to contact us:
    [email protected]

    Your personal ID:
    ****************

    🔗 HowToFix.Guide: How To Decrypt .lkfr Files?

    Indicators of Compromise(IOC)

    File NameMD5File Size
    📜 SAMPLE.EXE94ec83b25bf1f1574aedb939601d942017746142
    📜 SAMPLE.EXEcd52eee363f347b388150800c63e161110105856
    📜 SAMPLE.EXE84e5ccdfbdfd9d92456c890e6d8641d4812032
    📜 SAMPLE.EXEbabe436ca4d62fa8f2b871f7e8e14361682828
    📜 SAMPLE.EXE1c66ff1aa646fa45e4a9acb7681bc9d415704270
    📜 SAMPLE.EXEb53f9821429a957dbb940190b929208f15331278
    📜 SAMPLE.EXEc3c8543919bbd677773e9bb97e12eb62751828992
    📜 SAMPLE.EXE14e556dccdb9731632c6321a4801515314908158
    📜 SAMPLE.EXE496a327e9fd93b6db80bd14c4a719be33913216
    📜 SAMPLE.EXEd7c5a94b5914d06d3139a9963393793c761266176