KMROX Ransomware 🔐 (.KMROX File) — Removal Guide

The Kmrox virus falls under the Phobos ransomware family. Malware of such sort encrypts all user’s data on the computer (photos, documents, excel tables, audio files, videos, etc) and adds its own extension to every file, creating the info.txt text files in each directory which contains the encrypted files.

Kmrox virus: what is known so far?

☝️ Kmrox is a Phobos family ransomware malicious agent.

The renaming will be done by this scheme: id[xxxxxx].[contact-email].kmrox. During the encryption, a file named, for instance, “report.docx” will be changed to “report.docx.id[9ECFA84E-3489].[[email protected]].kmrox”.

In each folder that contains the encrypted files, a info.txt text document will be created. It is a ransom money note. It contains information about the ways of paying the ransom and some other information. The ransom note usually contains instructions on how to purchase the decryption tool from the tamperers. You can get this decrypting software after contacting [email protected] through email. That is basically the scheme of the felony.

Kmrox Overview:

Name Kmrox Virus
Ransomware family1 Phobos ransomware
Extension .kmrox
Ransomware note info.txt
Contact [email protected]
Detection Win32/Filecoder.Conti.L, Win32:PWSX-gen [Trj], PWS:Win32/Fareit!MTB
Symptoms Your files (photos, videos, documents) get a .kmrox extension and you can’t open them.
Fix Tool See If Your System Has Been Affected by Kmrox virus

The info.txt file coming in package with the Kmrox ransomware states the following:

All your files have been encrypted!


At the moment there is no way to decrypt the data, except to request from us a decryptor and a key with which you will recover all your data.
If you want to restore them, write to us by email: [email protected]
Write this ID in the title of your message -
For quick and convenient feedback, write to the online operator in the Telegram messenger: @exezaz
(Be careful when entering the Telegram account name, it must be exactly the same as above, beware of fake accounts.)
Also, from some mail services, your letter may not reach or get into spam, so to increase the likelihood of receiving a quick response, also duplicate your letters to our spare email addresses: [email protected] and [email protected]
Payment for decryption is made in bitcoins. In order to find out the price, write to the above contacts. The sooner you contact us, the lower the price will be. After payment, we will send you a tool that will decrypt all your files.


Free decryption as guarantee
Before paying you can send us up to 3 files for free decryption. The total size of files must be less than 4Mb (non archived), and files should not contain valuable information. (databases,backups, large excel sheets, etc.)

 

How to obtain Bitcoins
You can buy Bitcoin in any place convenient for you, a beginner\'s guide is here:
hxxp://www.coindesk.com/information/how-can-i-buy-bitcoins/


Attention!
To get guaranteed help in decrypting your files, please contact only the contacts listed in this note, because at the moment there are many scammers who,
under the pretext that they can decrypt your data, request a free decryption through us and pass it off as a demonstration that they can decrypt your files.
Remember that the key for decrypting files is individual in each individual case, so you will not be able to decrypt your files yourself using third-party software, it will only spoil your files.
If you want to communicate through an intermediary, then check the price with our operator in advance, since intermediaries often wind up the real price. !!! When contacting third parties,
we do not guarantee the decryption of your files!!!
Also, to avoid problems with decryption, do not rename your files.

In the picture below, you can see what a directory with files encrypted by the Kmrox looks like. Each filename has the “.kmrox” extension added to it.

Kmrox Virus - encrypted .kmrox files

That is how encrypted “.kmrox” files look.

How did my machine catch Kmrox ransomware?

There are many possible ways of ransomware infiltration.

Nowadays, there are three most popular methods for criminals to have the Kmrox virus settled in your digital environment. These are email spam, Trojan injection and peer-to-peer file transfer.

  • Another thing the hackers might try is a Trojan horse model. A Trojan is an object that infiltrates into your PC disguised as something else. For instance, you download an installer of some program you need or an update for some program. But what is unpacked turns out to be a harmful program that corrupts your data. As the update wizard can have any name and any icon, you’d better be sure that you can trust the source of the stuff you’re downloading. The best way is to trust the software companies’ official websites.
  • As for the peer-to-peer file transfer protocols like BitTorrent or eMule, the threat is that they are even more trust-based than the rest of the Internet. You can never guess what you download until you get it. So you’d better be using trustworthy resources. Also, it is a good idea to scan the directory containing the downloaded files with the antivirus as soon as the downloading is finished.

How do I get rid of ransomware?

It is important to note that besides encrypting your data, the Kmrox virus will most likely install Vidar Stealer on your PC to seize your credentials to different accounts (including cryptocurrency wallets). That program can extract your credentials from your browser’s auto-filling data.

How do I avoid ransomware infection?

Kmrox ransomware has no endless power, neither does any similar malware.

You can protect your system from its attack within three easy steps:

  • Ignore any letters from unknown senders with unknown addresses, or with content that has likely no connection to something you are waiting for (can you win in a money prize draw without participating in it?). In case the email subject is likely something you are expecting, check all elements of the questionable letter with caution. A fake letter will always contain mistakes.
  • Do not use cracked or unknown software. Trojan viruses are often spreaded as an element of cracked products, most likely under the guise of “patch” which prevents the license check. Understandably, potentially dangerous programs are difficult to distinguish from trustworthy software, because trojans sometimes have the functionality you seek. You can try searching for information about this software product on the anti-malware message boards, but the optimal solution is not to use such software.

FAQ

🤔 Is it possible to open “.kmrox” files?

There’s no way to do it, unless the files “.kmrox” files are decrypted.

🤔 I really need to decrypt those “.kmrox” files ASAP. How can I do that?

It’s good if you have fаr-sightedly saved copies of these important files elsewhere. In case you haven’t, there is still a chance that you do have a Restore Point from some time ago to roll back the whole system to the moment when it had no virus yet, but already had your files. All other solutions require time.

🤔 What to do if the Kmrox virus has blocked my PC and I can’t get the activation code.

🤔 What could help the situation right now?

Some of the encrypted data can be found elsewhere.

  • If you exchanged your critical files via email, you could still download them from your online mailbox.
  • You might have shared photographs or videos with your friends or relatives. Just ask them to send those pictures back to you.
  • If you have initially downloaded any of your files from the Internet, you can try doing it again.
  • Your messengers, social networks pages, and cloud disks might have all those files too.
  • It might be that you still have the needed files on your old PC, a portable device, phone, external storage, etc.

USEFUL TIP: You can use file recovery utilities2 to retrieve your lost information since ransomware encrypts the copies of your files, removing the authentic ones. In the video below, you can learn how to recover your files with PhotoRec, but be advised: you can do it only after you remove the virus with an antivirus program.

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Brendan Smith

References

  1. My files are encrypted by ransomware, what should I do now?
  2. Here’s the list of Top 10 Data Recovery Software Of 2023.

About the author

Brendan Smith

Cybersecurity analyst covering malware families, suspicious files, and detection alerts. Brendan focuses on clear explanations of what a warning means, when it may be a false positive, and which cleanup steps are appropriate.

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