Sigma Ransomware

What is Sigma Ransomware?

Sigma Ransomware is a dangerous infection that may encrypt all your important files and ask for a high ransom fee to send you the decryption tool and your private key, which are required for you to be able recover your files. Unfortunately, our experience indicates that such attackers rarely keep their word; in other words, there is little chance for you to get the tool and the key after you pay the ransom fee. It is more likely that these cyber criminals disappear right away or infect you with yet another threat. It is important that you keep a backup of your files somewhere safe (e.g., removable drive) because after such a devastating attack, this could be your only savior. Our malware experts at say that you should remove Sigma Ransomware right after you realize that it has hit your computer. Please read our full report to learn more about this dangerous threat and how you can avoid similar ones in the future.testtesttest

Where does Sigma Ransomware come from?

Our malware experts have found that the malicious .exe file describes itself as an "Automated Universal MultiBoot UFD Creation Tool." This lead us to the assumption that this ransomware may mostly be distributed on the web as a fake tool that could be available for download on suspicious file-sharing pages like torrent and freeware sites. It is also possible that this fake tool is spread in freeware bundles, which also means that your computer could be infected with several malware threats and potentially unwanted programs as well. Of course, all of the other possible infections this ransomware is probably the most dangerous one.

Before you download any application, you should run a web search to find out whether your target is indeed a reliable and reputable tool. You should also make sure that you only download programs from official websites. Using questionable file-sharing pages is always quite risky. It is also possible that you are offered to download this fake tool in a third-party pop-up advertisement that can be displayed when visiting suspicious websites or when your computer is infected with adware. All in all, it is important that you run a reliable malware scanner after you delete Sigma Ransomware from your PC because chances are you will find other malicious programs on board as well. We also recommend that you keep all your browsers and drivers updated because cyber criminals can also infect you with ransomware if you land on a malicious page using Exploit Kits.

How does Sigma Ransomware work?

This dangerous ransomware program uses a deadly combination of AES and RSA-2048 encryption algorithms. It targets your important personal files since it has to hit you hard so that you would be will to pay this much for your files. The affected files will get a random four-character extension like ".82NA" or anything similar. This malware infection creates a ransom note file called "ReadMe.html" on your desktop and opens it after the encryption has finished. It also drops a "ReadMe.txt" file in every affected folder, which also contains instructions for you to be able to recover your files by buying the decryption software and the private key.

You have to visit the attackers' Tor website at "yowl2ugopitfzzwb.onion" and enter your unique ID there to access your payment instructions page. These villains demand 1,000 US dollars' worth of Bitcoins from you to be paid within 7 days. If you fail to do so, this price doubles. Unlike in the case of most other ransomware programs, these criminals actually seem to provide you with live support via XAMP. Of course, you have to create your own XAMP account to be able to chat with "" once you add it as a "buddy." We do not suggest that you pay this high amount for your files even if this would mean losing them. But, of course, it is all up to you. We strongly recommend that you remove Sigma Ransomware right away.

How do I delete Sigma Ransomware?

It is possible that this ransomware infection deletes its executable after it finishes encryption. Still, there are other related files that you should remove from your system if you want to use a clean PC. We have prepared a guide for you below this article so that you can manually eliminate this threat. Of course, the best solution would be for you to employ a professional anti-malware application like SpyHunter but you can also use any other security tool you find reputable enough for you. Should you have any questions about the removal of Sigma Ransomware, please leave us a comment below.

Remove Sigma Ransomware from Windows

  1. Press Win+E to open File Explorer.
  2. Locate the malicious executable and delete it (if it has not removed itself yet).
  3. Bin all the ransom notes from your desktop and affected folders.
  4. Empty your Recycle Bin.
  5. Restart your computer. 100% FREE spyware scan and
    tested removal of Sigma Ransomware*

Stop these Sigma Ransomware Processes:

Sigma Ransomware.exe

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