A new file-less malware has been spotted to send out approximately 2000 spam e-mails per week to users. The malware does not have any files, but instead it spreads via infected Microsoft Office macros. All users who have been affected by this malware should immediately take action towards blocking the active connection and removing this cyber-threat from their computer via anti-malware software.
|Short Description||Steals financial data from the infected PoS system.|
|Symptoms||Slow PC, PowerShell or CMD run briefly and close. Creates a temporary dll file in %AppDataa%.|
|Distribution Method||Via malicious macros in Microsoft Office documents.|
|Detection Tool||Download Malware Removal Tool, to See If Your System Has Been Affected by malware|
|User Experience||Join our forum to discuss PowerSniff.|
PowerSniff – Methods of Distribution
The primary method of distribution of this PoS threat is via spam email messages, containing infected Microsoft Word, Excel, PowerPoint or other documents with infected macros. Here is an example of how a spam email sent out may appear like.
The sniffer-like malware is also reported to be spread primarily across the United States, but infections can also be seen in Canada and all over Europe as well.
PowerSniff In Detail
Once activated, the ransomware sends out system information to infect the user PC. After its macro has been enabled, similar to a network sniffer, the malware immediately sends system information to a remote host. Such information may include:
- Windows version and architecture. (32 bit vs. 64 bit).
- Computer’s antivirus software.
- Firewall protection.
- IP address.
Researchers at GrahamCluley report that after infecting the user PC, PowerSniff runs a concealed Power Shell window and executes an administrative command:
→ powershell.exe -ExecutionPolicy Bypass -WindowStyle Hidden –noprofile
Not only this, but the ransomware also begins to tamper with the Windows Registry Editor modifying it so that it creates a temporary DLL file in the %AppData% folder.
After the infection itself has been conducted, the malware has a clever selection process by which it looks for any PoS operation on the infected PC to collect credentials from them. This happens by looking for words such as “Point-Of-Sale”, “Sale” and others.
Not only this, but it also excludes any hospitals and medical centers from its hit list. This means that it excludes words such as “Hospital,” and others. These all point out to the ethics and cleverness of its developers.
Remove PowerSniff PoS Malware and Prevent It in the Future
If you believe you have become a victim of this threat it is essential to immediately transfer the funds and change the financial credentials of the PoS system and also on other systems in the network. To remove the malware, we advise using an advanced anti-malware software and following the step-by-step manual below, if the PoS system is working via Windows OS.
After the removal of this malware make sure you follow the mentioned herein safety tips. They will make sure your organization is significantly more protected than any other threats of such type in the future.
- Guide 1: How to Remove PowerSniff from Windows.
- Guide 2: Get rid of PowerSniff from Mac OS X.
- Guide 3: Remove PowerSniff from Google Chrome.
- Guide 4: Erase PowerSniff from Mozilla Firefox.
- Guide 5: Uninstall PowerSniff from Microsoft Edge.
- Guide 6: Remove PowerSniff from Safari.
- Guide 7: Eliminate PowerSniff from Internet Explorer.
How to Remove PowerSniff from Windows.
Step 1: Boot Your PC In Safe Mode to isolate and remove PowerSniff
Step 2: Uninstall PowerSniff and related software from Windows
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.
Step 3: Clean any registries, created by PowerSniff 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 PowerSniff there. This can happen by following the steps underneath:
Get rid of PowerSniff from Mac OS X.
Step 1: Uninstall PowerSniff and remove related files and objects
1. Hit the ⇧+⌘+U keys to open Utilities. Another way is to click on “Go” and then click “Utilities”, like the image below shows:
- 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 PowerSniff 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:
You can repeat the same procedure with the following other Library directories:
Tip: ~ is there on purpose, because it leads to more LaunchAgents.
Step 2: Scan for and remove malware from your Mac
When you are facing problems on your Mac as a result of unwanted scripts, programs and malware, 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.
Remove PowerSniff from Google Chrome.
Step 1: Start Google Chrome and open the drop menu
Step 2: Move the cursor over "Tools" and then from the extended menu choose "Extensions"
Step 3: From the opened "Extensions" menu locate the unwanted extension and click on its "Remove" button.
Step 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.
Erase PowerSniff from Mozilla Firefox.
Step 1: Start Mozilla Firefox. Open the menu window
Step 2: Select the "Add-ons" icon from the menu.
Step 3: Select the unwanted extension and click "Remove"
Step 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.
Uninstall PowerSniff from Microsoft Edge.
Step 1: Start Edge browser.
Step 2: Open the drop menu by clicking on the icon at the top right corner.
Step 3: From the drop menu select "Extensions".
Step 4: Choose the suspected malicious extension you want to remove and then click on the gear icon.
Step 5: Remove the malicious extension by scrolling down and then clicking on Uninstall.
Remove PowerSniff from Safari.
Step 1: Start the Safari app.
Step 2: After hovering your mouse cursor to the top of the screen, click on the Safari text to open its drop down menu.
Step 3: From the menu, click on "Preferences".
Step 4: After that, select the 'Extensions' Tab.
Step 5: Click once on the extension you want to remove.
Step 6: Click 'Uninstall'.
A pop-up window will appear asking for confirmation to uninstall the extension. Select 'Uninstall' again, and the PowerSniff will be removed.
Eliminate PowerSniff from Internet Explorer.
Step 1: Start Internet Explorer.
Step 2: Click on the gear icon labeled 'Tools' to open the drop menu and select 'Manage Add-ons'
Step 3: In the 'Manage Add-ons' window.
Step 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'.
Step 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.