UpgradeSys virus: what it is and how to remove it

It depends on where the file is and who signed it, not on the name. Open Task Manager, go to the Details tab, right-click FWUpgradeProvider.apk and choose Open file location. A file inside Program Files or System32 with a valid digital signature from a known company is usually part of a legitimate program.

A file in AppData, Temp or ProgramData with no signature, especially one that restarts itself after you end it, is suspicious. If you cannot tie the process to anything you installed, uninstall recent unfamiliar programs and run a Microsoft Defender Offline scan.

Ending an unknown process is safe in the sense that Windows will warn you before you close anything critical, and a restart brings back whatever Windows needs. Ending FWUpgradeProvider.apk will not remove it, though: if a task or startup entry launches it, it returns at the next sign-in.

Use ending the process as a test. If something important stops working, it belonged to a program you use. If nothing changes and it comes back by itself, find and disable its starter, delete the file and scan the PC.

If it sits outside the Windows and Program Files folders and your antivirus links it to UpgradeSys virus, yes. FWUpgradeProvider.apk is the file name used by this trojan. Some trojans borrow the names of real Windows components, so the name alone does not decide it:

• right-click the process in Task Manager
• choose Open file location
• look at the folder and the publisher under Properties > Details

A file in a user folder with no publisher is the trojan. Do not delete it by hand while it runs; use the offline scan in the plan above.

Not necessarily UpgradeSys virus, but it is a warning sign. These are legitimate remote support tools, and criminals use them as ready-made backdoors, especially after tech support scams or fake invoice calls.

If you did not install it and no one you trust set it up, uninstall it, change passwords from a clean device and check your bank account. If someone connected to your PC through it, follow the steps for remote access trojans and consider a Windows reset. Installed apps sorted by date shows when it appeared.

That is not known yet. UpgradeSys virus has been reported by people who saw an unfamiliar process called FWUpgradeProvider.apk in Task Manager, but no sample has been analysed publicly, so security companies have not assigned it to a family. The name you see may be a file or program name chosen by the authors, not a family name.

This does not stop you from removing it: the startup points, the offline scan and the account steps are the same for most families of this type. If Microsoft Defender or another scanner gives the file a detection name, write it down; that name is the best clue to the family and is useful when you report the incident.

Report it if you lost money, if accounts were taken over, if you are a business, or if the trojan came through a scam call. A police or national cybercrime report gives you a reference number for your bank and insurer and helps link cases.

You do not need to report a trojan that antivirus blocked before it ran. Before reporting, write down the dates, the detection name, file names and any messages or transactions linked to the attack; screenshots of antivirus alerts are useful evidence. The country list is in the report section above.

Antivirus programs see a file only when it is written or run, and criminals test each new build against popular scanners before release. Detection catches up within hours or days, which is often after the first victims ran it.

Archives with passwords, installers that fetch the malware later, and scripts run through PowerShell make the job harder. That is why behaviour such as downloading cracks or pasting commands matters more than any setting. Keep Windows and Defender updated, and turn on Reputation-based protection in App & browser control.

Often you do not, which is the point of a trojan. Possible signs are an antivirus alert naming UpgradeSys virus or a generic trojan detection, unknown programs or scheduled tasks, processes with random names in Task Manager, browser extensions you did not add, security settings turned off, slower performance, or account alerts about logins from unknown places.

The reliable check is a full scan followed by Microsoft Defender's offline scan. If you recently ran a crack, a fake installer or a command a website told you to paste, scan even without symptoms.

Yes, it takes little time and removes doubt. UpgradeSys virus itself usually stays on one PC, but the download that carried it may have been copied to other computers, shared drives may hold the same installer, and an attacker who had access could have tried saved passwords on other devices.

Run a full scan on every Windows PC in the home or office, check shared folders for the original download, and change Wi-Fi and router passwords if they were stored on the infected machine.

Fortect scans Windows for malware and unwanted programs and repairs the system files and settings they change, and its free scan shows what it finds on your PC before you decide anything.

For UpgradeSys virus, follow the plan above as well: the browser steps take back permissions and settings that no scanner treats as a threat, and uninstalling the program that brought it removes the source.

Run Microsoft Defender's full scan and, if anything was found, its offline scan as a second opinion. If the symptoms are gone after the plan and both scans are clean, there is nothing more to do.