SepSys Ransomware

What is SepSys Ransomware?

You might be going about your business as normal and then SepSys Ransomware reveals itself and declares that all of your personal files were encrypted. This might shock you and make you go into panic, but if you are able to keep your head level, you might be able to get yourself out of this messy situation with ease. If you are prepared for malware attacks, perhaps you already have backup copies of personal photos, documents, and other types of files? If you do, all you really need to worry about is how you will delete SepSys Ransomware from your Windows operating system. And what if you do not have copies? If that is the case, you might be interested in learning whether or not you can take the gamble of paying a ransom that is requested by cybercriminals, according to who, the ransom can buy you a decryptor. Whether you are trying to remove the infection or restore your files, researchers are here to assist you.test

How does SepSys Ransomware work?

SepSys Ransomware is not unlike Rxx Ransomware, NCOV Ransomware, BTOS Ransomware, or other file encryptors. All of these infections rely on security backdoors to slither into more vulnerable systems. Systems are considered to be vulnerable if not all updates are installed and if legitimate security software is not guarding it against malware. Of course, just because a system is vulnerable or unguarded does not mean that SepSys Ransomware can attack it. The victim plays an important role as well, as they are the ones who have to open the backdoor. For example, they can do that by downloading malicious files from unreliable file-sharing sites or opening spam email attachments sent to them by unknown senders. Once the threat is executed, it starts encrypting files immediately, and it goes after personal files. That means that the infection does not encrypt system files that you could recover by reinstalling Windows. Instead, the threat encrypts personal files that you might be unable to replace unless backup copies exist. In many cases, internal backups can be modified or deleted by ransomware, but backups stored outside the computer should remain safe.

The “.sepsys” extension is added to the files that SepSys Ransomware corrupts, but this extension has not determined the name of the threat. The only file that this malware creates is called “README.html” (in the %PROGRAMDATA% directory), and the message inside informs that “Your computer has been infected by sepSys.” The message also informs that if you want to get the files back, you need to pay a ransom of $100 to 3BL1TbL96gQFTR9EJFKX7JSp889oj2nJmj (at the time of research, this wallet was empty) and confirm the payment by sending a message to If you do as told, you are supposed to obtain a decryptor and a unique password, but you must know better than to trust cybercriminals. Remember that they can promise you just about anything just to get the money they want. SepSys Ransomware was created for the sole purpose of making money, and so you can bet that the attackers will do and say anything to get it. Hopefully, you can replace your files with backups because it is unlikely that you can decrypt files even if you pay the ransom. If you are going to pay it, do so at your own risk.

How to delete SepSys Ransomware

Whether you replace your files, lose them for good, or get them back (which is unlikely to happen), you need to remove SepSys Ransomware from your operating system. Can you do it yourself? You might be able to if you can locate the .exe file that launched it. We cannot know where this file is but if you can find it, use the manual removal guide below. Another option is to employ anti-malware software to delete SepSys Ransomware automatically. Let it inspect your operating system and erase all malicious components. Do not get rid of it as soon as malware is gone. If you want to have full-time protection against all kinds of threats, you need reliable protection, which anti-malware software can definitely provide you with. Reliable protection is very important, but remember that you have to do your part as well. Do NOT leave your system unguarded. Do NOT miss an opportunity to create backups of all personal files. And do NOT let your own actions lead to destruction.

Removal Guide

  1. Find and Delete the {unique name}.exe file that launched the threat.
  2. Tap Win+E to access Explorer and then enter %programdata% into the quick access field.
  3. Delete the file named README.html.
  4. Tap Win+R keys to access Run and then enter regedit to access Registry Editor.
  5. Move to HKCUSoftware\Microsoft\Windows\CurrentVersion\Run and Delete the value named Service.
  6. Empty Recycle Bin and then quickly install a legitimate malware scanner to run a full system scan. 100% FREE spyware scan and
    tested removal of SepSys Ransomware*


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