Biopass RAT: what it is and how to remove it

Biopass RAT is an extremely perilous malware infection spreading through fake Adobe Flash Player and Microsoft Silverlight's installers/updates. However, services for both of these apps were discontinued.

Facts checked October 6, 2026. Removal steps tested on Windows 11 (26H2) and checked against Microsoft's and the browser makers' current documentation. Sections marked as our earlier report are the original text: they describe the threat as it was then and have not been reviewed since. The 2026 status, the removal steps and the questions are current.

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Screenshot of Biopass RAT: screenshot
Biopass RAT as our 2021 report showed it.

Biopass RAT: summary

DistributionFor now, the article's culprit is delivered with fake Flash Player and Silverlight installers/updates, but it could also be spread via phishing emails, hacked websites, etc.
nameBiopass RAT
TypeMalware, trojan
DangersThis trojan can be programmed to execute various functions, including downloading additional malware, taking screenshots, stealing files and personal information directly from the device or browsers, etc.
TargetsBusinesses and regular individuals
Detection namesNo Microsoft detection name is known
Removal

Scan the PC with security software to find and remove the malware and anything installed with it. Fortect scans Windows for malware and repairs the system files and settings it damaged.

Remove it nowTo use the full-featured product, you have to purchase a license for Fortect. The scan is free.
Show 7 more facts
DamageNot recorded in the old report
NameBiopass RAT
SymptomsAn unknown process in Task Manager
Evidence5 write-ups by security sites; details still limited
File namesReimageRepair.exe
First seen14 July 2021
Facts checked6 October 2026

What Biopass RAT does on an infected PC

From our report of Jul 2021 · not reviewed since

Biopass RAT – a Python-based backdoor capable of various devastating actions

Biopass RAT is an extremely perilous malware infection spreading through fake Adobe Flash Player and Microsoft Silverlight's installers/updates.

However, services for both of these apps were discontinued.

RAT stands for Remote Access Trojan. So one of the main dangers of the infection is in its name. The article's culprit can provide remote access to the infected device for criminals, which can do whatever they please with it, from deleting all files or downloading them to spying on you through the webcam.

So far, researchers have identified that Biopass RAT is targeting only online gambling companies in China through watering hole attacks, but that doesn't mean that it won't be reprogrammed and spread in other countries through different infection techniques. Your best defense against such threats is a reliable anti-malware tool.

Remote access trojans can be programmed to execute various shady features. Researchers have uncovered that Biopass RAT has tons of extremely dangerous characteristics. After infiltration, the article's culprit creates a scheduled task to load the Cobalt Strike shellcode showing its association with the widely used malware.

After closely examining the threat, researchers discovered that it's capable of executing a myriad of commands, with the most notable being:

Unlike Cobalt Strike, this RAT is brand new, so it might be in its developing stages and could be programmed to execute more commands in the near future. However, the capabilities it already exhibits are scary enough. It could turn webcams on and off to spy on the owners of infected machines.

Steal passwords to social media, banks, and any other services. All these actions could provide the criminals enough information to steal your identity, snatch money from your bank accounts or crypto-wallets, and so on. And the worst part is that you might be in the dark about Biopass RAT infection as it runs silently in the background.

Your infected device might become a part of a big Botnet and be used to mine Bitcoins or other cryptocurrencies, send out thousands of spam emails, perform DDoS attacks, and so on. All this could be done when you're not using the machine so that you wouldn't suspect a thing.

  • Uploading additional malware or any other files into the infected machine;
  • Downloading any files (e.r., victims pictures, documents, archives, databases, etc.);
  • Extracting private details (names, addresses, emails, credit card information, banking details, social media logins, etc.) either directly from the device or browsers;
  • Record video and audio through webcams and microphones;
  • Shutdown or reboot the device and run commands;
  • Take screenshots;
  • Provide unrestricted access and remote control of the infected device to the malware operators.
Screenshot of Biopass RAT: screenshot
Biopass RAT in our 2021 report.
Screenshot of Biopass RAT: virus
Biopass RAT in our 2021 report.

From our report of Jul 2021 · not reviewed since

More from our earlier report on Biopass RAT

  • Removal of such a significant threat must be entrusted to reliable anti-malware software
  • Trojans can wreak havoc on system files and installed software.

How to check the PC for Biopass RAT

  • File: ReimageRepair.exe

How to remove Biopass RAT

How to remove Biopass RAT and lock the attacker out

Someone may have had remote control of the PC.

Cut the connection first, then remove the trojan and secure your accounts.

  1. Step 1: Remove remote access tools and lock the attacker out

    Attackers keep access through remote control tools and extra user accounts. Disconnect the PC from the internet, then remove every remote access program you did not install yourself from the installed apps list in Windows 11 or Windows 10.

    Look for a user account you do not know and delete it, and switch off Remote Desktop in Settings > System. Reconnect only for the scan.

    Full procedure with screenshots: Uninstall a program or app in Windows On uGetFix

  2. Step 2: Check where ReimageRepair.exe runs from and stop it

    In Task Manager (Ctrl + Shift + Esc) find ReimageRepair.exe on Processes, right-click it and choose Open file location before ending anything.

    Windows' own files live in C:\Windows\System32; the same name in %AppData%, %Temp% or C:\Users\Public is an impostor. If the folder is wrong, right-click the process again, choose End task and delete the file.

    If it starts again within seconds, a task or another process restarts it, so run the scan step in Safe Mode. Task Manager works the same in Windows 11 and Windows 10.

    Full procedure with screenshots: Close a frozen app (Task Manager, Force Quit) On uGetFix

  3. Step 3: Delete scheduled tasks that bring it back

    Programs like Biopass RAT add a scheduled task so they return after an uninstall or reopen a page at every sign-in. Start Task Scheduler, open Task Scheduler Library and sort by Last Run Time to see what ran recently.

    On the Actions tab, a program in a user folder, a script or a web address is a warning sign; right-click such a task and choose Delete.

    Tasks with names copying Google, Edge or Windows updaters but pointing to an odd folder are typical. The tool looks the same in Windows 11 and Windows 10.

    Task Scheduler Library with a task selected and its Actions tab showing the program it starts
    Windows 11: Task Scheduler Library, the task selected, the Actions tab shows the file it runs.

    Full procedure with screenshots: Remove what malware leaves behind in Windows

  4. Step 4: Remove it from startup

    Press Ctrl + Shift + Esc to open Task Manager and select Startup apps (Windows 11) or the Startup tab (Windows 10). Disable entries you do not recognise, especially ones with no publisher or with a name that copies a Windows component.

    Right-click an entry and choose Open file location to see where it runs from: programs in %AppData% or %Temp% deserve a closer look. Some entries are not listed there but in the registry Run keys, which the procedure below shows how to check.

    Full procedure with screenshots: Stop apps from opening at startup On uGetFix

  5. Step 5: Scan the PC, then run the offline scan

    A scan finds the parts of Biopass RAT that the manual steps cannot see. In Windows Security > Virus & threat protection > Scan options, start a Full scan and quarantine what it reports.

    Follow it with Microsoft Defender Antivirus (offline scan) > Scan now, which restarts the PC and checks the disk while Windows and the malware are not running.

    It takes about 15 minutes and works the same in Windows 11 and Windows 10. If either scan finds something, run the full scan again after removal until it comes back clean.

    Windows Security Scan options with Microsoft Defender Antivirus offline scan selected
    Windows 11: Windows Security > Virus & threat protection > Scan options.

    Full procedure with screenshots: Run a Microsoft Defender Offline scan

  6. Step 6: Change passwords from another device and sign out other sessions

    Biopass RAT can copy saved passwords, cookies and session tokens and send them out in seconds, so cleaning the PC does not undo the theft.

    Change your passwords on a device that was never infected, starting with the e-mail account, since every other reset goes through it. On each account, end all other sessions and check the recovery e-mail, phone number and forwarding rules.

    Then turn on two-step verification. Sign in on the Windows 11 or Windows 10 PC again only after the offline scan is clean.

    Full procedure with screenshots: Turn on two-step verification / secure a hacked account

From our report of Jul 2021 · not reviewed since

Detailed instructions to remove Biopass RAT from an infected computer

Removal of remote access trojans can be exceptionally difficult.

The minute such an infection enters a machine, it does heavy modifications to system files and settings to establish persistence and becomes extremely hard to detect. For example, it might disable your anti-malware tools and camouflage its processes as legitimate Windows tasks.

Nonetheless, the article's culprit can be removed. You will have to reboot your infected Windows computer in Safe Mode with Networking and download the security software. We know that not all our readers are tech-savvy, so we'll guide you through this process. Follow these illustrated instructions to enter Safe Mode and remove Biopass RAT:

Once you've reached this mode, you can download whichever security you want. Still, since we're in the cybersecurity business for over 20 years, we've gathered a lot of experience and knowledge about security software.

After installing your preferred security tool, you must update its virus signatures with the latest releases and perform a full system scan. It should reveal all malware hiding in your device, isolate it, and give the option of removal to you. Please don't hesitate for a minute and remove Biopass RAT with all associated files.

Trustworthy anti-malware software is a must-have for every individual who spends at least a few minutes on the internet each day because cybercriminals are getting more creative with how they can distribute their vile creations. Anti-malware tools are your frontline defense in this war.

After removing malware, you also have to end all tasks that the article's culprit is running on your infected device. Windows Task Manager is a useful tool that shows all the processes running in the background presents the possibility of ending practically any of them. Here's how you launch it and deal with malicious tasks:

Biopass RAT could've messed with program Startup features by adding itself into the mix. Therefore you need to examine that possibility and look through the list. Here's how you can do that:

Once all these steps are accomplished, the malware should be eliminated from your Windows computer. Please remember that acquiring a reliable cybersecurity tool could save you much more in recovery costs. If you want to learn how to evade various malware, please read our articles.

  • Right-click on the Start button and select Settings.
  • On the left side of the window, pick Recovery.
  • Click Restart now.
  • Select Troubleshoot.
  • Go to Advanced options.
  • Select Startup Settings.
  • Press Restart.
  • Now press 5 or click 5) Enable Safe Mode with Networking.
  • Press Ctrl + Shift + Esc on your keyboard to open Windows Task Manager.
  • Click on More details.
  • Right-click and select Open file location.
  • Go back to the process, right-click and pick End Task.
  • Delete the contents of the malicious folder.
  • Press Ctrl + Shift + Esc on your keyboard to open Windows Task Manager.
  • Go to the Startup tab.
  • Right-click on the suspicious program and pick Disable.
Biopass RAT: advanced options
Biopass RAT in our 2021 report.
Biopass RAT: open file location
Biopass RAT in our 2021 report.

From our report of Jul 2021 · not reviewed since

Restore damaged system sections with reliable PC repair software

As we've already mentioned, once a remote access trojan gains access to a system, it immediately modifies system files and settings to establish persistence.

From altering the registry to messing up other core system files, this could include a myriad of actions.

Corrupted system files and settings might result in exhibitions of various strange behavior, such as an inability to open certain software, Blue Screens of Death, severe lag, malware renewal, complete system failure, etc. We can't express the importance of resolving all the issues that Biopass RAT might have caused to your device.

Unfortunately, you won't be able to undo these changes manually, as it's not even recommended for IT professionals. Therefore, you will need to use a reliable system diagnostics tool.

A scan with this software will automatically determine all system sectors that Biopass RAT has affected and recommend resolving them. It's offer with a free trial, so you have nothing to lose by trying it out:

  • Download the application by clicking on the link above
  • Click on the ReimageRepair.exe
  • If User Account Control (UAC) shows up, select Yes
  • Press Install and wait till the program finishes the installation process
  • The analysis of your machine will begin immediately
  • Once complete, check the results - they will be listed in the Summary
  • You can now click on each of the issues and fix them manually
Biopass RAT: 1 1
Biopass RAT in our 2021 report.
Biopass RAT: 2 2
Biopass RAT in our 2021 report.

After removal: passwords, accounts and prevention

Accounts come next

Because the PC showed an unfamiliar process called ReimageRepair.exe in Task Manager, a sign of a program that could read browser data, the clean-up is only half of the work.

The other half happens in your online accounts.

Change passwords from a clean device, beginning with e-mail; sign out of all sessions; check forwarding rules and recovery phone numbers; and turn on two-step verification with an authenticator app or a passkey. Ask your bank to replace cards saved in the browser.

Why the order matters and what to check in each account: secure your accounts after malware.

Access your website securely from any location

When you work on the domain, site, blog, or different project that requires constant management, content creation, or coding, you may need to connect to the server and content management service more often. The best solution for creating a tighter network could be a dedicated/fixed IP address.

If you make your IP address static and set to your device, you can connect to the CMS from any location and do not create any additional issues for the server or network manager that needs to monitor connections and activities. VPN software providers like can help you with such settings and offer the option to control the online reputation and manage projects easily from any part of the world.

Recover files after data-affecting malware attacks

While much of the data can be accidentally deleted due to various reasons, malware is one of the main culprits that can cause loss of pictures, documents, videos, and other important files.

More serious malware infections lead to significant data loss when your documents, system files, and images get encrypted. In particular, ransomware is is a type of malware that focuses on such functions, so your files become useless without an ability to access them.

Even though there is little to no possibility to recover after file-locking threats, some applications have features for data recovery in the system. In some cases, can also help to recover at least some portion of your data after data-locking virus infection or general cyber infection.

Questions about Biopass RAT

Is ReimageRepair.exe safe?

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 ReimageRepair.exe 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.

ReimageRepair.exe keeps coming back. What should I do?

A process that returns after you end it has a restart mechanism, and that is a reason to treat ReimageRepair.exe as unwanted. Check Settings > Apps > Startup, Task Scheduler and the Services list for entries pointing to its folder, and disable them.

Look in Installed apps for anything added the same day and uninstall it. Then delete the folder and run a Microsoft Defender Offline scan, which works before Windows starts and can remove files that are locked or hidden while the system is running.

Is ReimageRepair.exe a virus?

If it sits outside the Windows and Program Files folders and your antivirus links it to Biopass RAT, yes. ReimageRepair.exe 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.

My antivirus was on. How did a trojan get past it?

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.

Should I check my other computers too?

Yes, it takes little time and removes doubt. Biopass RAT 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.

How do I know if my PC has Biopass RAT?

Often you do not, which is the point of a trojan. Possible signs are an antivirus alert naming Biopass RAT 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.

Is Biopass RAT a known trojan?

Not as a documented family, at least not yet. What is known is the visible sign, an unfamiliar process called ReimageRepair.exe in Task Manager, which matches a hidden program working for someone else.

New threats are often seen by victims weeks before researchers publish anything about them. Treat Biopass RAT as you would any trojan:

  • remove what starts it
  • run an offline scan
  • change passwords from another device

If a scan reports a detection name, keep it; it usually reveals the family and whether it is known to download other malware. We update this guide when an analysis appears.

Should I report Biopass RAT?

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.

How dangerous is Biopass RAT?

Treat it as serious until proven otherwise. The visible sign is an unfamiliar process called ReimageRepair.exe in Task Manager, and programs that behave this way often have more abilities than they show:

  • copying passwords
  • downloading other malware
  • giving remote access

Its family is not known yet, so nobody can say which of these it uses. The good news is that the response is the same in every case and takes about an hour:

  • cut the network
  • remove the startup entry
  • run an offline scan
  • change passwords from a clean device

If someone had remote control, a full reset is safer.

Will Fortect remove Biopass RAT?

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 Biopass RAT, 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.

Sources

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