|Short Description||The threat may download malicious files onto the user PC and may obtain machine information and transfer it to the domain it has an active connection to.|
|Symptoms||Unfamiliar processes or processes carrying the same name as original ones but do not have Windows Process in their description and are not part of the Windows Processes table. Slow PC, pop-ups, redirects to unfamiliar sites, locked screen, command prompt opens up briefly and closes on startup, slow or no internet connection, antivirus software disabled, firewall disabled, hidden Task Manager Processes, installed programs without user’s consent, new objects in the %Temp% folder, one or more active connection to the IP address 18.104.22.168 when typing netstat -n in command prompt.|
|Distribution Method||Massive Spam Mail campaigns.|
|Detection tool||Download Malware Removal Tool, to See If Your System Has Been Affected By Download.Sapaviro|
A new type of downloader Trojan has begun to infect systems via email attachments, Symantec researcher report. It is going by the name Download.Sapaviro and it is a very vile threat. The Trojan can remain actively connected to the attacker’s domain and also may download all types of malware on the infected computer by opening ports that are unchecked. Security engineers recommend to disconnect immediately from the web in case you have detected this trojan or observe one of the symptoms above. Since the downloader may quickly corrupt the system with other malware, every user should take the necessary action to remove the threat from an affected PC and employ anti-malware protection.
Download.Sapaviro – How Did I Get Infected?
The Trojan is believed to redistribute mainly via massive spam mail campaigns as an attachment to the mail. One of the most often attachment files used are:
→.doc, .docx, .pdf, .txt, .xml, .jnt
And these attachments are often in combination with the trojan’s executables, which may be:
→.exe, .bat, .cmd, .reg, .lnk
Most emails that are sent out may either resemble a legitimate service or spoof letter resembling someone famous or significant. A good example is the Windows 10 Free Upgrade spam mail message.
Download.Sapaviro Trojan in Detail
Once the Trojan is executed, it has been reported that it establishes active connection to this address:
Once established connection the Trojan may collect the Machine and Operating system information and may also download the following types of malware appropriate(based on the OS):
- Ransomware (For example, CryptoWall 3.0)
- Spyware Trojan (For example, TrojanSpy.W32/Bholog )
- Worm (For example, W32.Mydoom)
- Trojan.Clicker (For example, FaceLiker)
- Rootkit (For example, Bing Redirect Virus )
The cyber threat may download the malicious files onto the %Temp% folder in Windows. Also, the program may execute various scripts that allow the executables it situates to run on start up and to make it concealed from the user and any antivirus programs. More to it than that, most executables may resemble genuine Windows processes in the Windows Task Manager to fool even experienced users. The most copied process names are:
→svchost.exe; csrss.exe; smss.exe, winlogon.exe, explorer.exe
In case you see that any of those processes exist twice in your task manager, and one of them is not described as an official Windows Process, it may be a malicious application. Of course there are some malware applications that are concealed at all from the users and this is why you need to download an external Task Manager that is not part of Windows, like one of those provided in tis Lifehacker article (hotlink http://lifehacker.com/5378494/five-best-windows-task-manager-alternatives)
How To Remove Download.Sapaviro Trojan From Your PC
In order to remove threat such as this one, one must take two important details into consideration – that the trojan supports active connection with the user at all times and the possibility that it may have downloaded all sorts of malware onto the user PC. This is why it is not advisable to just reset your PC – it will not fix the problem. One thing you can to is immediately disconnect from the internet to stop any active connections. Then you should boot it in safe mode and scan it with an advanced anti-malware program that will detect this and other malware on the user PC. Make sure to download the scanner from a safe PC and install it on yours before restarting in safe mode. For more, information on restarting into Safe Mode, make sure you check the instructions below.
Step 1: Start Your PC in Safe Mode to Remove Download.Sapaviro.
Removing Download.Sapaviro from Windows XP, Vista, 7 systems:
1. Remove all CDs and DVDs, and then Restart your PC from the “Start” menu.
– For PCs with a single operating system: Press “F8” repeatedly after the first boot screen shows up during the restart of your computer. In case the Windows logo appears on the screen, you have to repeat the same task again.
– For PCs with multiple operating systems: Тhe arrow keys will help you select the operating system you prefer to start in Safe Mode. Press “F8” just as described for a single operating system.
3. As the “Advanced Boot Options” screen appears, select the Safe Mode option you want using the arrow keys. As you make your selection, press “Enter“.
4. Log on to your computer using your administrator account
While your computer is in Safe Mode, the words “Safe Mode” will appear in all four corners of your screen.
Removing Download.Sapaviro from Windows 8, 8.1 and 10 systems:
Whilst holding down Shift button, click on Power and then click on Restart.
A menu will appear upon reboot. You should choose Safe Mode by pressing its corresponding number and the machine will restart and boot into Safe Mode so you can scan for and remove Download.Sapaviro.
Step 2: Remove Download.Sapaviro automatically by downloading an advanced anti-malware program.
To clean your computer you should download an updated anti-malware program on a safe PC and then install it on the affected computer in offline mode. After that you should boot into safe mode and scan your computer to remove all Download.Sapaviro associated objects.
- Guide 1: How to Remove Download.Sapaviro from Windows.
- Guide 2: Get rid of Download.Sapaviro from Mac OS X.
- Guide 3: Remove Download.Sapaviro from Google Chrome.
- Guide 4: Erase Download.Sapaviro from Mozilla Firefox.
- Guide 5: Uninstall Download.Sapaviro from Microsoft Edge.
- Guide 6: Remove Download.Sapaviro from Safari.
- Guide 7: Eliminate Download.Sapaviro from Internet Explorer.
How to Remove Download.Sapaviro from Windows.
Step 1: Boot Your PC In Safe Mode to isolate and remove Download.Sapaviro
Step 2: Uninstall Download.Sapaviro 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 Download.Sapaviro 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 Download.Sapaviro there. This can happen by following the steps underneath:
Get rid of Download.Sapaviro from Mac OS X.
Step 1: Uninstall Download.Sapaviro 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 Download.Sapaviro 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 Download.Sapaviro 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 Download.Sapaviro 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 Download.Sapaviro 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 Download.Sapaviro 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 Download.Sapaviro will be removed.
Eliminate Download.Sapaviro 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.