What is Saefko?

Saefko can put your privacy at risk, infect your system with other malicious applications, and even infect removable media devices attached to your computer. To put it simply, it could do a lot of damage if it manages to get into your system. Therefore, we highly recommend reading our full article to learn how the malware might be spread and what you should do to guard your computer against it. Also, in the article, we discuss the malicious application’s working manner as well as the troubles it could cause to its victims. Of course, the malware’s removal is one of the topics we discuss in this report too. Thus, if you came here to learn how to eliminate Saefko, you should check the last paragraph as well as the manual deletion instructions placed at the end of the text.

Where does Saefko come from?

Our researchers at believe that Saefko might be spread through Spam emails, malicious file-sharing websites, or unreliable advertising material. Meaning, users could launch it accidentally if they open doubtful installers, updates, email attachments, or any other suspicious data downloaded from the Internet. Even though avoid such files could seem like a difficult task, it might not be as challenging in reality. All you have to do is not to open files if you are no one hundred percent sure they are save to launch. In a case you are not sure, you should scan doubtful files with a legitimate antimalware tool. If a file appears to be malicious, your chosen tool should help you get rid of it safely as well. Another good idea is to make sure your system has no vulnerabilities (e.g., outdated software, weak passwords, etc.) because some malware can exploit weaknesses to get in.

How does Saefko work?

The malware should install itself by placing various malicious files in the %APPDATA%\Roaming and %APPDATA%\Local directories. In case there are removable devices connected to an infected system or such devices are connected later, the threat may drop malicious data on them too. As a consequence, victims may carry Saefko to other machines without even realizing it. Needless to say, if your system was infected with this malware, you should check all removable media devices that might have been connected to it during this time. The files dropped on removable media devices might be called Sas.exe, USBStart.exe, usbspread.vbs, or similarly.

Furthermore, Saefko works as a backdoor and a keylogger. Therefore, hackers behind the malware can do almost anything on the infected device. For instance, gather various information by recording a victim’s keystrokes, taking screenshots, viewing browsing history, and so on. Also, the malicious application may allow cybercriminals to install more malware, activate a computer’s webcam, access user’s files, etc. Such functionality could be used to gather sensitive information which could be employed for scams or sold on the dark web. Needless to say, the longer the threat stays the more troubles it can cause, which is why it is crucial to eliminate it as soon as possible.

How to erase Saefko?

While you could erase Saefko manually, we recommend using a legitimate antimalware tool instead if you want to be sure the threat gets deleted. As you see, we can only tell where the malicious application might place its data, but we cannot give you specific names. Meaning, you would have to identify the threat’s files on your own if you choose to remove it manually. If you still feel up to such a task, you could follow the instructions placed below. Otherwise, we recommend installing a legitimate antimalware tool that could erase Saefko for you. As mentioned before, you must check all removable media devices that might have been connected to the infected machine as the threat could have placed malicious data on them too.

Eliminate Saefko

  1. Click Ctrl+Alt+Delete.
  2. Pick Task Manager and select Processes.
  3. Locate a process belonging to the threat.
  4. Select it and click End Task.
  5. Exit Task Manager.
  6. Click Windows key+E.
  7. Locate these paths:
  8. Locate the malicious application’s installer.
  9. Right-click it and select Delete.
  10. Navigate to: %APPDATA%\Roaming and %APPDATA%\Local
  11. Find suspicious files with random names that could belong to the malware.
  12. Right-click such files and select Delete.
  13. Check your removable media devices for files called Sas.exe, USBStart.exe, and usbspread.vbs.
  14. Right-click them and select Delete.
  15. Exit File Explorer.
  16. Empty your Recycle Bin.
  17. Restart the computer. 100% FREE spyware scan and
    tested removal of Saefko*

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