I had a company that was hit with the Sigma virus. It did end up encrypting a bunch of their data which for the most part we were able to get from the backups. My question is that I am trying to put in steps to avoid this from happening again. I so far have blocked in Exchange the execution of all .exe files plus .zip files which I believe will help. I am wondering if there is something else I should be doing besides this step. Since 15 users are salesman they are mostly disconnected from the Domain so besides having possibly End-Point protection on each machine is there anything else I should do. This was a hassle for the company I am working with so any suggestions I would appreciate it.

Sigma Description

Sigma is a dangerous ransomware infection designed by hackers to earn easy money from computer users. Sigma virus mainly encrypts users’ important files and then asks for money to decrypt them. So far no one can recover those infected files except the virus maker. This means that once your machine is infected by Sigma virus, you may suffer from big loss.

Sigma virus usually spreads by means of spam emails attachments, pornographic websites and free applications. You should be very careful when surfing the internet.

As soon as you notice that Sigma virus has entered your computer, you must take actions to delete it as quickly as possible, because the longer you let it stay there, the more files it will corrupt. Then how do we eliminate the nasty Sigma virus? For advanced/experienced users, you can choose to remove it manually. For common users, you can use antivirus software to handle Sigma virus. Here below I will steer you step by step to eradicate Sigma virus.

Harmful Properties of Sigma virus Virus

#1 Sigma virus makes your system performance slow down significantly
#2 Sigma virus hijacks your internet browsers and causes redirect problems
#3 Sigma virus virus deletes/corrupts your important files and programs
#4 Sigma virus may bring in additional malware infections
#5 Sigma virus may secretly collect your sensitive data and send it to remote servers
#6 Sigma virus virus may allow cyber criminals to take control of your infected computer

How to Remove Sigma from Windows/Mac Computer Completely

STEP 1: Remove Sigma and all suspicious programs from computer control panel
STEP 2: Reset your browsers to get rid of malware extensions/add-ons created by Sigma
STEP 3: Scan the whole computer with Plumbytes or Mackeeper, and then eliminate all the hidden malicious files.

STEP 1: Remove Sigma and all suspicious programs from computer control panel

In this step, you need to uninstall the main program of Sigma. As long as it is related to Sigma, just uninstall it without any hesitation.

On Win10

1. On the Start menu select Settings.
2. Select System > Apps & features.
3. Select the Sigma related programs/unknown programs, and then select Uninstall. Some apps built in to Windows can’t be uninstalled.

how to fully remove Sigma virus

Win 8/Win 8.1

1. Right-click in the screen’s bottom-left corner and choose the Control Panel from the pop-up menu.
2. When the Control Panel appears, choose Uninstall a Program from the Programs category.
3. Click the Sigma program or unwanted program, and then click its Uninstall button.
4. When Windows asks whether you’re sure, click Yes.
how do i get rid of Sigma virus

Win 7
1. To uninstall an application, use the uninstall program provided by Windows 7. Start by clicking on the Windows icon.
2. In the right pane, click on Control Panel.
3. Under Programs click on the item Uninstall a program.
4. Windows then lists all programs that were installed using Windows Installer. Select the program you want to uninstall (Sigma) by clicking on it.
5. Click at the top on Uninstall/Change.
6. In the next message box, confirm the uninstall process by clicking on Yes.
7. Windows now starts the uninstall process. After completion you’ll receive a status message, which you confirm by selecting OK.

Sigma virus removal guide - Sigma uninstall

STEP 2: Reset your browsers to get rid of malware extensions/add-ons created by Sigma

Reset Internet Explorer

Open Internet Explorer>Click on Tools > Internet Options> Go to the Advanced tab>Click on the Reset button.

how to delete Sigma virus for good

Reset Google Chrome

1. On the latest version of Google Chrome, click on the Customize and control Google Chrome button> Settings.
2.Click on Advanced Settings.
3.Scroll down to the bottom of the page, until you reached the “Reset browser settings” section.
4.Click on Reset browser settings.

best way to remove Sigma virus

Reset Mozzila Firefox

1. Open the Troubleshooting Information page using one of these methods:
o Click the menu button > click help> select Troubleshooting Information. A new tab containing your troubleshooting information should open.
o If you’re unable to access the Help menu, type about:support in your address bar to bring up the Troubleshooting Information page.
2. At the top right corner of the page, you should see a button that says “Refresh Firefox” (“Reset Firefox” in older Firefox versions). Click on it.
3. Firefox will close. After the refresh process is completed, Firefox will show a window with the information that is imported.
4. Click Finish and Firefox will reopen.

how to permanently delete Sigma virus

Reset Apple Safari

1. Open Safari.
2. Click on the “Safari” in your Safari menu.
3. A drop-down menu will appear, simply click on the Reset Safari tab.
4. A warning dialog will appear pointing out what will be removed.
5. Click on the Reset button to complete the process.
6. Safari will restart automatically.

quick guide to remove Sigma virus thoroughly

STEP 3: Scan the whole computer with Plumbytes or Mackeeper, and then eliminate all the hidden malicious files.

Both Plumbytes and Mackeeper are professional virus malware removers that can delete all forms of stubborn computer infections. They will help you get rid of Sigma quickly, and will protect machine in the future.

For Windows users:

1. Click the button below to download Plumbytes free scanner

2. After the download it finished, install it by following the set up wizard

3. Perform a deep system scan with Plumbytes, and then clean up Sigma malicious files and other detected threats.

Sigma virus removal tool

For Mac users:

1. Click the button below to download Mackeeper free scanner

2. After the download it finished, install it by following the set up wizard

3.Run Mackeeper>Perform a deep system scan, and then clean up Sigma malicious files and other detected threats

how can i remove Sigma from my computer forever

Your computer should now be free of the Sigma infecion. We highly recommend that you keep Plumbytes/Mackeeper installed to periodically scan your device for malware infections. This way you will be able to stay away from tons of dangerous computer viruses easily.