Martin graduated with a degree in Publishing from Sofia University. As a cyber security enthusiast he enjoys writing about the latest threats and mechanisms of intrusion.
Martin graduated with a degree in Publishing from Sofia University. As a cyber security enthusiast he enjoys writing about the latest threats and mechanisms of intrusion.
SIDENOTE: This post was originally published in August 2018. But we gave it an update in August 2019.
The MacOS: BitCoinMiner-AS is a malware cryptocurrency miner which can infect target hosts using a variety of different methods. Infections with it can lead to the deployment of other threats and consequences upon the victims include a degradation of system performance and the inability to use the computers in a normal way. Learn how to restore your Mac OS X computers from active infections by following our in-depth article.
Threat Summary
Name
MacOS: BitCoinMiner-AS
Type
Cryptocurrency miner for Mac OS X
Short Description
A malicious script that takes advantage of the available system resources which in turn generates income for the hacker operators.
Symptoms
Victims will notice severe system performance issues.
Distribution Method
Bundled downloads, malicious scripts and other methods.
Detection Tool
See If Your System Has Been Affected by MacOS: BitCoinMiner-AS
MacOS: BitCoinMiner-AS is a specific cryptocurrency miner that is made compatible with Mac OS X computers. It can come under the form of a JavaScript code found on hacker-controlled or hijacked pages. These websites may be popular sites or communities that the users visit or fake copies of them. Any counerfeit copies of sites can utilize design elements and similar sounding domains to the legitimate versions. The only warning sites of infections are overall performance issues as most of the malicious code is executed directly without prompts or pop-ups.
Other methods that can be used to spread the infection includes the installation of infected software installers. They are made by taking the legitimate installers from the official vendor download sites and modifying them with the virus code. Targets are applications that are popular with end users: creativity suites, sytem utilities and productivity software.
Using malicious documents the users can also infect themselves with the MacOS: BitCoinMiner-AS malware. This si done by opening files that contain virus scripts (macros). They can be of any type (presentations, spreadsheets and etc.) and once they are opened the users will be prompted to enable the content. When this is done the macros will download the malicious engine and the infection will follow.
Malicious scrips that can lead to the MacOS: BitCoinMiner-AS infections include all kinds of pop-ups, banners, redirects and in-line links.
MacOS: BitCoinMiner-AS – More Information
When started the cryptocurrency miner module will be started. Most of the threats of this type follow a predesigned execution pattern which is made up of the following steps:
Payload Delivery — The infection begins by downloading the malicious engine from a hardcoded download site. The relevant code is then run by the browser or the computer.
Miner Operations — The miner module is run with the predefined parameters downloaded from the hacker-controlled servers. It starts to utilize the available system resources in order to perform complex calculations.
Report — When the operations are complete information is sent to the hacker servers and money in the form of digital currency is transferred to the hackers wallets.
Other dangerous activities imposed by the virus’s presence includes the deployment of additional threats. If the MacOS: BitCoinMiner-AS malware is programmed to cause other dangerous changes to the infected machines. An example is the manipulation of boot records. This will automatically trigger the launch of the threat once the computer boots and may also disable certain components from launching.
Another malware activity that can follow is the installation of a Trojan module. It establishes an encrypted (secure) connection with a hacker-controlled server which is used to spy on the users in real time, allow the criminals to overtake control of the machines and steal files.
During the miner’s execution it can also harvests information that can be grouped ino one of these two categories:
Private Data — The malicious engine can harvest information that can expose the identity of the victims. This includes a person’s name, address, phone number, interests, location and account credentials.
Metrics — This data set consists of data that can be used to optimize follow-up attack campaigns. Example contents include a report of the installed hardware components and certain user-set settings.
Remove MacOS: BitCoinMiner-AS from Your Mac
In order to remove MacOS: BitCoinMiner-AS from your computer, we would recommend that you use a specific software that is designed to scan for and detect all of the related files and objects to MacOS: BitCoinMiner-AS and remove them. Such program also aims to ensure that your Mac remains protected against such invasive programs and malware in the future too, while also maintaining good performance of your machine.
Martin graduated with a degree in Publishing from Sofia University. As a cyber security enthusiast he enjoys writing about the latest threats and mechanisms of intrusion.
Martin graduated with a degree in Publishing from Sofia University. As a cyber security enthusiast he enjoys writing about the latest threats and mechanisms of intrusion.
Martin graduated with a degree in Publishing from Sofia University. As a cyber security enthusiast he enjoys writing about the latest threats and mechanisms of intrusion.
MacOS: BitCoinMiner-AS may remain persistent on your system and may re-infect it. We recommend you to download SpyHunter and run free scan to remove all virus files on your PC. This saves you hours of time and effort compared to doing the removal yourself.
Preparation before removing MacOS: BitCoinMiner-AS.
Before starting the actual removal process, we recommend that you do the following preparation steps.
Make sure you have these instructions always open and in front of your eyes.
Do a backup of all of your files, even if they could be damaged. You should back up your data with a cloud backup solution and insure your files against any type of loss, even from the most severe threats.
Be patient as this could take a while.
Step 1: Boot Your PC In Safe Mode to isolate and remove MacOS: BitCoinMiner-AS
OFFER
Manual Removal Usually Takes Time and You Risk Damaging Your Files If Not Careful!
We Recommend To Scan Your PC with SpyHunter
Keep in mind, that SpyHunter’s scanner is only for malware detection. If SpyHunter detects malware on your PC, you will need to purchase SpyHunter’s malware removal tool to remove the malware threats. Read our SpyHunter 5 review. Click on the corresponding links to check SpyHunter’s EULA, Privacy Policy and Threat Assessment Criteria
1. Hold Windows key()+ R
2. The “Run” Window will appear. In it, type “msconfig” and click OK.
3. Go to the “Boot” tab. There select “Safe Boot”, tick “Network” and then click “Apply” and “OK”.
Tip: Make sure to reverse those changes by unticking Safe Boot after that, because your system will always boot in Safe Boot from now on.
4. When prompted, click on “Restart” to go into Safe Mode.
5. You can recognise Safe Mode by the words written on the corners of your screen.
Step 2: Clean any registries, created by MacOS: BitCoinMiner-AS on your computer.
The usually targeted registries of Windows machines are the following:
You can access them by opening the Windows registry editor and deleting any values, created by MacOS: BitCoinMiner-AS there. This can happen by following the steps underneath:
1. Open the Run Window again, type “regedit” and click OK.
2. When you open it, you can freely navigate to the Run and RunOnce keys, whose locations are shown above.
3. You can remove the value of the virus by right-clicking on it and removing it.
Tip: To find a virus-created value, you can right-click on it and click “Modify” to see which file it is set to run. If this is the virus file location, remove the value.
Step 3: Find files created by MacOS: BitCoinMiner-AS
For Windows 8, 8.1 and 10. For Windows XP, Vista, and 7.
For Newer Windows Operating Systems
1: On your keyboard press + R and write explorer.exe in the Run text box and then click on the Ok button.
2: Click on your PC from the quick access bar. This is usually an icon with a monitor and its name is either “My Computer”, “My PC” or “This PC” or whatever you have named it.
3: Navigate to the search box in the top-right of your PC’s screen and type “fileextension:” and after which type the file extension. If you are looking for malicious executables, an example may be “fileextension:exe”. After doing that, leave a space and type the file name you believe the malware has created. Here is how it may appear if your file has been found:
N.B. We recommend to wait for the green loading bar in the navination box to fill up in case the PC is looking for the file and hasn’t found it yet.
For Older Windows Operating Systems
In older Windows OS’s the conventional approach should be the effective one:
1: Click on the Start Menu icon (usually on your bottom-left) and then choose the Search preference.
2: After the search window appears, choose More Advanced Options from the search assistant box. Another way is by clicking on All Files and Folders.
3: After that type the name of the file you are looking for and click on the Search button. This might take some time after which results will appear. If you have found the malicious file, you may copy or open its location by right-clicking on it.
Now you should be able to discover any file on Windows as long as it is on your hard drive and is not concealed via special software.
IMPORTANT! Before starting “Step 4”, please boot back into Normal mode, in case you are currently in Safe Mode. This will enable you to install and use SpyHunter 5 successfully.
Step 4: Scan for MacOS: BitCoinMiner-AS with SpyHunter Anti-Malware Tool
1. Click on the “Download” button to proceed to SpyHunter’s download page.
It is recommended to run a scan before purchasing the full version of the software to make sure that the current version of the malware can be detected by SpyHunter. Click on the corresponding links to check SpyHunter’s EULA, Privacy Policy and Threat Assessment Criteria.
2. After you have installed SpyHunter, wait for it to update automatically.
3. After the update process has finished, click on the ‘Malware/PC Scan’ tab. A new window will appear. Click on ‘Start Scan’.
4. After SpyHunter has finished scanning your PC for any files of the associated threat and found them, you can try to get them removed automatically and permanently by clicking on the ‘Next’ button.
If any threats have been removed, it is highly recommended to restart your PC.
Step 5 (Optional): Try to Restore Files Encrypted by MacOS: BitCoinMiner-AS.
Ransomware infections and MacOS: BitCoinMiner-AS aim to encrypt your files using an encryption algorithm which may be very difficult to decrypt. This is why we have suggested a data recovery method that may help you go around direct decryption and try to restore your files. Bear in mind that this method may not be 100% effective but may also help you a little or a lot in different situations.
1. Download the reccomended Data Recovery software by clicking on the link underneath:
2. On the download page, click on the “Download” button:
3. Click on “Save File” button:
4. Accept all agreements and click “Next”:
5. After all the “Next” steps, click on “Install” and then wait for the installation to complete:
6.Run the software. Click on the location to scan for missing or deleted files and click on “Scan”:
7. Wait for the scan to complete, it may take some time. Be advised that this scan is not 100% guaranteed to recover all files, but it does have some chance to get your data back:
Martin graduated with a degree in Publishing from Sofia University. As a cyber security enthusiast he enjoys writing about the latest threats and mechanisms of intrusion.
MacOS: BitCoinMiner-AS may remain persistent on your system and may re-infect it. We recommend you to download SpyHunter and run free scan to remove all virus files on your PC. This saves you hours of time and effort compared to doing the removal yourself.
Preparation before removing MacOS: BitCoinMiner-AS.
Before starting the actual removal process, we recommend that you do the following preparation steps.
Make sure you have these instructions always open and in front of your eyes.
Do a backup of all of your files, even if they could be damaged. You should back up your data with a cloud backup solution and insure your files against any type of loss, even from the most severe threats.
Be patient as this could take a while.
Step 1: Boot Your PC In Safe Mode to isolate and remove MacOS: BitCoinMiner-AS
OFFER
Manual Removal Usually Takes Time and You Risk Damaging Your Files If Not Careful!
We Recommend To Scan Your PC with SpyHunter
Keep in mind, that SpyHunter’s scanner is only for malware detection. If SpyHunter detects malware on your PC, you will need to purchase SpyHunter’s malware removal tool to remove the malware threats. Read our SpyHunter 5 review. Click on the corresponding links to check SpyHunter’s EULA, Privacy Policy and Threat Assessment Criteria
1. Hold Windows key()+ R
2. The “Run” Window will appear. In it, type “msconfig” and click OK.
3. Go to the “Boot” tab. There select “Safe Boot” and then click “Apply” and “OK”.
Tip: Make sure to reverse those changes by unticking Safe Boot after that, because your system will always boot in Safe Boot from now on.
4. When prompted, click on “Restart” to go into Safe Mode.
5. You can recognise Safe Mode by the words written on the corners of your screen.
Step 2: Clean any registries, created by MacOS: BitCoinMiner-AS on your computer.
The usually targeted registries of Windows machines are the following:
You can access them by opening the Windows registry editor and deleting any values, created by MacOS: BitCoinMiner-AS there. This can happen by following the steps underneath:
1. Open the Run Window again, type “regedit” and click OK.
2. When you open it, you can freely navigate to the Run and RunOnce keys, whose locations are shown above.
3. You can remove the value of the virus by right-clicking on it and removing it.
Tip: To find a virus-created value, you can right-click on it and click “Modify” to see which file it is set to run. If this is the virus file location, remove the value.
Step 3: Find files created by MacOS: BitCoinMiner-AS
For Windows 8, 8.1 and 10. For Windows XP, Vista, and 7.
For Newer Windows Operating Systems
1: On your keyboard press + R and write explorer.exe in the Run text box and then click on the Ok button.
2: Click on your PC from the quick access bar. This is usually an icon with a monitor and its name is either “My Computer”, “My PC” or “This PC” or whatever you have named it.
3: Navigate to the search box in the top-right of your PC’s screen and type “fileextension:” and after which type the file extension. If you are looking for malicious executables, an example may be “fileextension:exe”. After doing that, leave a space and type the file name you believe the malware has created. Here is how it may appear if your file has been found:
N.B. We recommend to wait for the green loading bar in the navination box to fill up in case the PC is looking for the file and hasn’t found it yet.
For Older Windows Operating Systems
In older Windows OS’s the conventional approach should be the effective one:
1: Click on the Start Menu icon (usually on your bottom-left) and then choose the Search preference.
2: After the search window appears, choose More Advanced Options from the search assistant box. Another way is by clicking on All Files and Folders.
3: After that type the name of the file you are looking for and click on the Search button. This might take some time after which results will appear. If you have found the malicious file, you may copy or open its location by right-clicking on it.
Now you should be able to discover any file on Windows as long as it is on your hard drive and is not concealed via special software.
IMPORTANT! Before starting “Step 4”, please boot back into Normal mode, in case you are currently in Safe Mode. This will enable you to install and use SpyHunter 5 successfully.
Step 4: Scan for MacOS: BitCoinMiner-AS with SpyHunter Anti-Malware Tool
1. Click on the “Download” button to proceed to SpyHunter’s download page.
It is recommended to run a scan before purchasing the full version of the software to make sure that the current version of the malware can be detected by SpyHunter. Click on the corresponding links to check SpyHunter’s EULA, Privacy Policy and Threat Assessment Criteria.
2. After you have installed SpyHunter, wait for it to update automatically.
3. After the update process has finished, click on the ‘Malware/PC Scan’ tab. A new window will appear. Click on ‘Start Scan’.
4. After SpyHunter has finished scanning your PC for any files of the associated threat and found them, you can try to get them removed automatically and permanently by clicking on the ‘Next’ button.
If any threats have been removed, it is highly recommended to restart your PC.
Martin graduated with a degree in Publishing from Sofia University. As a cyber security enthusiast he enjoys writing about the latest threats and mechanisms of intrusion.
MacOS: BitCoinMiner-AS may remain persistent on your system and may re-infect it. We recommend you to download SpyHunter and run free scan to remove all virus files on your PC. This saves you hours of time and effort compared to doing the removal yourself.
Preparation before removing MacOS: BitCoinMiner-AS.
Before starting the actual removal process, we recommend that you do the following preparation steps.
Make sure you have these instructions always open and in front of your eyes.
Be patient as this could take a while.
Step 1: Uninstall MacOS: BitCoinMiner-AS and related software from Windows
OFFER
Manual Removal Usually Takes Time and You Risk Damaging Your Files If Not Careful!
We Recommend To Scan Your PC with SpyHunter
Keep in mind, that SpyHunter’s scanner is only for malware detection. If SpyHunter detects malware on your PC, you will need to purchase SpyHunter’s malware removal tool to remove the malware threats. Read our SpyHunter 5 review. Click on the corresponding links to check SpyHunter’s EULA, Privacy Policy and Threat Assessment Criteria
Here is a method in few easy steps that should be able to uninstall most programs.No matter if you are using Windows 10, 8, 7, Vista or XP, those steps will get the job done. Dragging the program or its folder to the recycle bin can be a very bad decision. If you do that, bits and pieces of the program are left behind, and that can lead to unstable work of your PC, errors with the file type associations and other unpleasant activities. The proper way to get a program off your computer is to Uninstall it. To do that:
1. Hold the Windows Logo Button and “R” on your keyboard. A Pop-up window will appear.
2. In the field type in “appwiz.cpl” and press ENTER.
3. This will open a window with all the programs installed on the PC. Select the program that you want to remove, and press “Uninstall”
Follow the instructions above and you will successfully uninstall most programs.
Step 2: Clean your Browsers from MacOS: BitCoinMiner-AS.
Remove an extension from Mozilla FirefoxRemove an extension from Google Chrome Remove an extension from Internet Explorer Remove an extension from Microsoft Edge
1. Start Mozilla Firefox. Open the menu window
2. Select the “Add-ons” icon from the menu.
3. Select the unwanted extension and click “Remove“
4. After the extension is removed, restart Mozilla Firefox by closing it from the red “X” button at the top right corner and start it again.
1. Start Google Chrome and open the drop menu
2. Move the cursor over “Tools” and then from the extended menu choose “Extensions“
3. From the opened “Extensions” menu locate the unwanted extension and click on its “Remove” button.
4. After the extension is removed, restart Google Chrome by closing it from the red “X” button at the top right corner and start it again.
1. Start Internet Explorer: 2. Click on the gear icon labeled ‘Tools’ to open the drop menu and select ‘Manage Add-ons’
3. In the ‘Manage Add-ons’ window.
4. Select the extension you want to remove and then click ‘Disable’. A pop-up window will appear to inform you that you are about to disable the selected extension, and some more add-ons might be disabled as well. Leave all the boxes checked, and click ‘Disable’.
5. After the unwanted extension has been removed, restart Internet Explorer by closing it from the red ‘X’ button located at the top right corner and start it again.
1. Start Edge
2. Open the drop menu by clicking on the icon at the top right corner.
3. From the drop menu select “Extensions”.
4. Choose the suspected malicious extension you want to remove and then click on the gear icon.
5. Remove the malicious extension by scrolling down and then clicking on Uninstall.
Step 3: Clean any registries, created by MacOS: BitCoinMiner-AS on your computer.
The usually targeted registries of Windows machines are the following:
You can access them by opening the Windows registry editor and deleting any values, created by MacOS: BitCoinMiner-AS there. This can happen by following the steps underneath:
1. Open the Run Window again, type “regedit” and click OK.
2. When you open it, you can freely navigate to the Run and RunOnce keys, whose locations are shown above.
3. You can remove the value of the virus by right-clicking on it and removing it.
Tip: To find a virus-created value, you can right-click on it and click “Modify” to see which file it is set to run. If this is the virus file location, remove the value.
IMPORTANT! Before starting “Step 4”, please boot back into Normal mode, in case you are currently in Safe Mode. This will enable you to install and use SpyHunter 5 successfully.
Step 4: Scan for MacOS: BitCoinMiner-AS with SpyHunter Anti-Malware Tool
1. Click on the “Download” button to proceed to SpyHunter’s download page.
It is recommended to run a scan before purchasing the full version of the software to make sure that the current version of the malware can be detected by SpyHunter. Click on the corresponding links to check SpyHunter’s EULA, Privacy Policy and Threat Assessment Criteria.
2. After you have installed SpyHunter, wait for it to update automatically.
3. After the update process has finished, click on the ‘Malware/PC Scan’ tab. A new window will appear. Click on ‘Start Scan’.
4. After SpyHunter has finished scanning your PC for any files of the associated threat and found them, you can try to get them removed automatically and permanently by clicking on the ‘Next’ button.
If any threats have been removed, it is highly recommended to restart your PC.
Martin graduated with a degree in Publishing from Sofia University. As a cyber security enthusiast he enjoys writing about the latest threats and mechanisms of intrusion.
MacOS: BitCoinMiner-AS may remain persistent on your system and may re-infect it. We recommend you to download Combo Cleaner and run free scan to remove all virus files on your Mac. This saves you hours of time and effort compared to doing the removal yourself.
Combo Cleaner’s scanner is free but the paid version is needed to remove the malware threats. Read Combo Cleaner’s EULA and Privacy Policy
Preparation Phase:
Before starting to follow the steps below, be advised that you should first do the following preparations:
Backup your files in case the worst happens.
Make sure to have a device with these instructions on standy.
Arm yourself with patience.
Step 1: Uninstall MacOS: BitCoinMiner-AS and remove related files and objects
OFFER
Manual Removal Usually Takes Time and You Risk Damaging Your Files If Not Careful!
We Recommend To Scan Your Mac with Combo Cleaner
Keep in mind, that Combo Cleaner needs to purchased to remove the malware threats. Click on the corresponding links to check Combo Cleaner’s EULA and Privacy Policy
1. Hit the ⇧+⌘+U keys to open Utilities. Another way is to click on “Go” and then click “Utilities”, like the image below shows:
2. Find Activity Monitor and double-click it:
3. In the Activity Monitor look for any suspicious processes, belonging or related to MacOS: BitCoinMiner-AS:
Tip: To quit a process completely, choose the “Force Quit” option.
4. Click on the “Go” button again, but this time select Applications. Another way is with the ⇧+⌘+A buttons.
5. In the Applications menu, look for any suspicious app or an app with a name, similar or identical to MacOS: BitCoinMiner-AS. If you find it, right-click on the app and select “Move to Trash”.
6. Select Accounts, after which click on the Login Items preference. Your Mac will then show you a list of items that start automatically when you log in. Look for any suspicious apps identical or similar to MacOS: BitCoinMiner-AS. Check the app you want to stop from running automatically and then select on the Minus (“–“) icon to hide it.
7. Remove any left-over files that might be related to this threat manually by following the sub-steps below:
Go to Finder.
In the search bar type the name of the app that you want to remove.
Above the search bar change the two drop down menus to “System Files” and “Are Included” so that you can see all of the files associated with the application you want to remove. Bear in mind that some of the files may not be related to the app so be very careful which files you delete.
If all of the files are related, hold the ⌘+A buttons to select them and then drive them to “Trash”.
In case you cannot remove MacOS: BitCoinMiner-AS via Step 1 above:
In case you cannot find the virus files and objects in your Applications or other places we have shown above, you can manually look for them in the Libraries of your Mac. But before doing this, please read the disclaimer below:
Disclaimer! If you are about to tamper with Library files on Mac, be sure to know the name of the virus file, because if you delete the wrong file, it may cause irreversible damage to your MacOS. Continue on your own responsibility!
1. Click on “Go” and Then “Go to Folder” as shown underneath:
2. Type in “/Library/LauchAgents/” and click Ok:
3. Delete all of the virus files that have similar or the same name as MacOS: BitCoinMiner-AS. If you believe there is no such file, do not delete anything.
You can repeat the same procedure with the following other Library directories:
→ ~/Library/LaunchAgents /Library/LaunchDaemons
Tip: ~ is there on purpose, because it leads to more LaunchAgents.
Step 2: Remove MacOS: BitCoinMiner-AS – related extensions from Safari / Chrome / Firefox
Remove an extension from Safari and reset it.Remove a toolbar from Google Chrome Remove a toolbar from Mozilla Firefox
1. Start Safari
2. After hovering your mouse cursor to the top of the screen, click on the Safari text to open its drop down menu.
3. From the menu, click on “Preferences“
4. After that, select the ‘Extensions’ Tab
5. Click once on the extension you want to remove.
6. Click ‘Uninstall’
A pop-up window will appear asking for confirmation to uninstall the extension. Select ‘Uninstall’ again, and the MacOS: BitCoinMiner-AS will be removed.
How to Reset Safari
IMPORTANT: Before resetting Safari make sure you back up all your saved passwords within the browser in case you forget them.
Start Safari and then click on the gear leaver icon.
Click the Reset Safari button and you will reset the browser.
1. Start Google Chrome and open the drop menu
2. Move the cursor over “Tools” and then from the extended menu choose “Extensions“
3. From the opened “Extensions” menu locate the add-on and click on the garbage bin icon on the right of it.
4. After the extension is removed, restart Google Chrome by closing it from the red “X” in the top right corner and start it again.
1. Start Mozilla Firefox. Open the menu window
2. Select the “Add-ons” icon from the menu.
3. Select the Extension and click “Remove“
4. After the extension is removed, restart Mozilla Firefox by closing it from the red “X” in the top right corner and start it again.
Step 3: Scan for and remove MacOS: BitCoinMiner-AS files from your Mac
When you are facing problems on your Mac as a result of unwanted scripts and programs such as MacOS: BitCoinMiner-AS, the recommended way of eliminating the threat is by using an anti-malware program. Combo Cleaner offers advanced security features along with other modules that will improve your Mac’s security and protect it in the future.
Martin graduated with a degree in Publishing from Sofia University. As a cyber security enthusiast he enjoys writing about the latest threats and mechanisms of intrusion.
For Windows 8, 8.1 and 10.
For Windows XP, Vista, and 7.
Remove an extension from Mozilla Firefox
Remove an extension from Google Chrome
Remove an extension from Internet Explorer
Remove an extension from Microsoft Edge
Remove an extension from Safari and reset it.
