Bondy virus, Bondy ransomware, Bondy file locker: what it is and how to remove it
Bondy ransomware is a malicious file-locking virus that uses the RSA algorithm to encrypt all victim data. After the malware finds its way into a system, it starts its dirty business.
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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Bondy virus, Bondy ransomware, Bondy file locker: summary
| Distribution | Spam emails, torrent sites |
|---|---|
| Name | Bondy virus, Bondy ransomware, Bondy file locker |
| Type | Ransomware, Malware |
| Extension | All encrypted files receive an .bondy extension |
| Ransom Note | HELP_DECRYPT_YOUR_FILES.TXT can be found in contaminated folders with brief instructions |
| Ransom amount | $200 |
| 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 15 more facts
| Bitcoin wallet | 3GDa7CcSjsW7Q29b16NiZ6DKxWauhJmKKq |
|---|---|
| Criminal contact details | bondbond1@protonmail.com |
| virus Removal | Manual deletion is not recommended. Reliable anti-malware software should be trusted to remove Bondy ransomware |
| Detection names | No Microsoft detection name is known |
| Encrypted file extension | .bondy |
| Decryptor | No free decryptor is known for this variant; check No More Ransom (nomoreransom.org) for updates |
| Damage | Not recorded in the old report |
| Symptoms | Files renamed with a new extension and a ransom note left in folders |
| Evidence | 4 write-ups by security sites; no sample analysed yet |
| Encrypted files | .bondy |
| Ransom note | HELP_DECRYPT_YOUR_FILES.txt |
| Attacker contacts | bondbond1@protonmail.com |
| Free decryptor | No free decryptor is known (checked 6 October 2026) |
| First seen | 3 November 2020 |
| Facts checked | 6 October 2026 |
- File extension:
.bondy - Note file:
HELP_DECRYPT_YOUR_FILES.txt - Contact:
bondbond1@protonmail.com
From our report of Nov 2020 · not reviewed since
More from our earlier report on Bondy virus, Bondy ransomware, Bondy file locker
- After Bondy virus removal a system tune-up is in order.
How Bondy virus, Bondy ransomware, Bondy file locker behaves
From our report of Nov 2020 · not reviewed since
Bondy ransomware - file encrypting virus using RSA encoding algorithm
Bondy ransomware is a malicious file-locking virus that uses the RSA algorithm to encrypt all victim data.
After the malware finds its way into a system, it starts its dirty business. In this case - it is encrypting all users' personal data. Only the system-files are left alone.
The virus appends all files with a .bondy extension, hence the name. After successful lockage of files, a ransom note is created within the contaminate folders, with instructions from the cybercriminals.
In the file named "HELP_DECRYPT_YOUR_FILES.txt," victims can find information on what to do to get their files back. The perpetrators behind Bondy ransomware explain that the files were locked using the RSA algorithm and that they're the only ones with the decryption key.
Although the RSA is one of the oldest cryptosystems used , still only the creator of the private key has the ability to unlock encrypted files. Cyberthieves assure that they have the required decryption key by offering the victims to send them one infected file via provided email (bondbond1@protonmail.com). The criminals are asking for $200 to be forwarded to their wallet (3GDa7CcSjsW7Q29b16NiZ6DKxWauhJmKKq) in Bitcoins.
Malware such as ransomware not only encrypts users' personal data. It also affects system files to work uninterrupted. These changes might prevent users' systems from efficiently operating. After Bondy ransomware removal is complete, users should use the tool to automatically find and restore whatever system files the virus could have potentially damaged.
The internet is full of lurking threats. Ransomware spreads via emails, file-sharing platforms, mischievous websites, and so on. Computer users should always have trustworthy anti-malware software such as or watching out for them.
Ransom note reads:


From our report of Nov 2020 · not reviewed since
Malware distribution methods on the internet
According to researchers, cybercriminals have numerous ways at their disposal on how to get peoples' computer systems infected.
They disguise their created viruses as .txt, .pdf, .exe files, and so on. The most common ways the cyberthieves are administering their creations are:
Spam emails are sent out by thousands in so-called spam campaigns. Unaware users are bombarded with them each day. Usually, ransomware is hidden either in a malicious hyperlink or the email attachment. Once either of them is opened - the infection process is initialized.
Other popular way for viruses to spread is file-sharing platforms. Ransomware might be camouflaged as an illegal activation tool, a genuine app updater, as game cheat codes, etc. These days, a dependable anti-malware software should always be watching the back of a computer user.
- Spam emails and their attachments
- File-sharing platforms
- Malicious hyperlinks
The Bondy virus, Bondy ransomware, Bondy file locker ransom note
Oops All Of your important files were encrypted Like document pictures videos etc..
Don't worry, you can return all your files!
All your files, documents, photos, databases and other important files are encrypted by a strong encryption.
How to recover files?
RSA is a asymmetric cryptographic algorithm, you need one key for encryption and one key for decryption so you need private key to recover your files. It's not possible to recover your files without private key.
The only method of recovering files is to purchase an unique private key.Only we can give you this key and only we can recover your files.
What guarantees you have?
As evidence, you can send us 1 file to decrypt by email We will send you a recovery file Prove that we can decrypt your file
Please You must follow these steps carefully to decrypt your files:
Send $200 worth of bitcoin to wallet: [payment address omitted]
after payment,we will send you Decryptor software
contact email: bondbond1@protonmail.com
Your personal ID: -
How to remove Bondy virus, Bondy ransomware, Bondy file locker
Tools you'll need
All of these are free except where noted. Download them on a clean device if the infected PC is offline.
- A USB stick: to keep the ransom note, two or three encrypted files and screenshots off the infected PC.
- Microsoft Defender Offline: built into Windows 11 and Windows 10; scans before Windows starts, so running malware cannot hide.
- Microsoft Safety Scanner: a second, portable scanner with current signatures; each download works for 10 days.
- ID Ransomware: identifies the family from the note and one encrypted file and says whether a decryptor exists.
- No More Ransom: the free decryptors from police and security companies; check it again every few months.
- Fortect (optional): scans Windows for malware and repairs the system files and settings it damaged. The free scan is in the box above.
How to remove Bondy virus, Bondy ransomware, Bondy file locker and get your files back
Work in this order.
Disconnecting comes first, removal comes before any restore, and nothing here asks you to contact the attackers.
Step 1: Disconnect the PC and unplug backup drives
Unplug the network cable or turn off Wi-Fi, and disconnect USB drives, external disks and network shares, so Bondy virus, Bondy ransomware, Bondy file locker cannot reach more files.
Pause OneDrive, Google Drive or Dropbox sync, because synced folders upload the encrypted copies over the good ones.
Leave the PC on but offline while you read the next steps, since a restart can let the ransomware run again. This applies to Windows 11 and Windows 10 alike.

Windows 11: turn off Wi-Fi to take the PC offline. Full procedure with screenshots: Ransomware: first steps, finding a decryptor and recovering files
Step 2: Save the ransom note and confirm the family
Your files now end in
.bondyand the instructions are inHELP_DECRYPT_YOUR_FILES.txt. Save both to a USB stick, a copy of the note and two small encrypted files, before anything else.On another device, check them with ID Ransomware or Crypto Sheriff: the family name decides which decryptor, if any, can help. Keep the note's ID and contact line for your report.

Windows 11: the ransom note and encrypted files to copy for identification. Full procedure with screenshots: Ransomware: first steps, finding a decryptor and recovering files
Step 3: Check for a free decryptor
Our last check found that for Bondy virus, Bondy ransomware, Bondy file locker, no free decryptor is known (checked 6 October 2026).
Look again yourself in the No More Ransom list and the free decryptor pages of Emsisoft, Avast and Kaspersky, which add new families every year.
A decryptor needs the ransomware gone first, or it encrypts the files again. Keep at least one copy of the encrypted files on an external drive, even if no tool works yet.
Full procedure with screenshots: Ransomware: first steps, finding a decryptor and recovering files
Step 4: Remove the ransomware before you restore or decrypt
Removing Bondy virus, Bondy ransomware, Bondy file locker does not bring the files back, but it has to come first. Start with Defender's Full scan, then the offline scan from the same Scan options page, which checks the disk before Windows loads.
If the scan cannot start, use Safe Mode with Networking. Delete the ransom notes only after you have saved a copy, because removal tools sometimes leave them behind on Windows 11 and Windows 10.

Windows 11: Windows Security > Virus & threat protection > Scan options. Full procedure with screenshots: Run a Microsoft Defender Offline scan
Step 5: Look for shadow copies of the files
Windows keeps shadow copies for restore points and backups, and some ransomware fails to delete them.
vssadmin list shadowsin an administrator Command Prompt tells you at once whether any exist.If they do, right-click the folder that held your files, open Properties > Previous Versions, select a version from before the attack, and click Open to check it before you Restore or copy the files out. Windows 11 and Windows 10 both have the tab.

Windows 11: vssadmin list shadows shows whether shadow copies exist. Full procedure with screenshots: Ransomware: first steps, finding a decryptor and recovering files
Step 6: Restore the files from a backup or recover deleted originals
A backup made before the attack is the surest way back. Connect it only once the PC is clean, then restore from File History, Windows Backup, OneDrive's Restore your OneDrive or your own external copies.
Without a backup, try file recovery: the originals that Bondy virus, Bondy ransomware, Bondy file locker deleted may still be on the disk until something overwrites them.
Install nothing new on the drive you want to recover from on the Windows 11 or Windows 10 PC.
Full procedure with screenshots: Recover deleted files (Recycle Bin, backups, OneDrive) On uGetFix
Instructions for each browser and system
The detailed steps for every browser and system this guide covers. Open the one you use.
Manual removal using Safe Mode
Important! →
Manual removal guide might be too complicated for regular computer users. It requires advanced IT knowledge to be performed correctly (if vital system files are removed or damaged, it might result in full Windows compromise), and it also might take hours to complete. Therefore, we highly advise using the automatic method provided above instead.
Step 1. Access Safe Mode with Networking
Manual malware removal should be best performed in the Safe Mode environment.
Windows 7 / Vista / XP
- Click Start > Shutdown > Restart > OK.
- When your computer becomes active, start pressing F8 button (if that does not work, try F2, F12, Del, etc. - it all depends on your motherboard model) multiple times until you see the Advanced Boot Options window.
- Select Safe Mode with Networking from the list.

Windows 10 / Windows 8
- Right-click on Start button and select Settings.

- Scroll down to pick Update & Security.

- On the left side of the window, pick Recovery.
- Now scroll down to find Advanced Startup section.
- 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.

Step 2. Shut down suspicious processes
Windows Task Manager is a useful tool that shows all the processes running in the background. If malware is running a process, you need to shut it down:
- Press Ctrl + Shift + Esc on your keyboard to open Windows Task Manager.
- Click on More details.

- Scroll down to Background processes section, and look for anything suspicious.
- 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.
Step 3. Check program Startup
- Press Ctrl + Shift + Esc on your keyboard to open Windows Task Manager.
- Go to Startup tab.
- Right-click on the suspicious program and pick Disable.

Step 4. Delete virus files
Malware-related files can be found in various places within your computer. Here are instructions that could help you find them:
- Type in Disk Cleanup in Windows search and press Enter.

- Select the drive you want to clean (C: is your main drive by default and is likely to be the one that has malicious files in).
- Scroll through the Files to delete list and select the following:
Temporary Internet Files
Downloads
Recycle Bin
Temporary files - Pick Clean up system files.

- You can also look for other malicious files hidden in the following folders (type these entries in Windows Search and press Enter):
%AppData%
%LocalAppData%
%ProgramData%
%WinDir%
After you are finished, reboot the PC in normal mode.
From our report of Nov 2020 · not reviewed since
Bondy ransomware virus removal guide
Bondy ransomware virus is a dangerous piece of malware and the longer it stays in the computer the more damage it could do. so it should be dealt with accordingly.
Use or to scan the computer system and automatically detect, isolate and remove Bondy virus.
Unfortunately, Bondy ransomware removal won't decrypt users' files. Export the encoded files to an empty offline storage and wait for a public decryption tool to come out. Restore data from backups. Users should always keep backups at least on two separate devices.
To restore all changes done by this virus to the system files, we advise using the tool to automatically detect all changes that have been done and undo them.
[GI=method-1]In case the virus is interfering with your security software, access Safe Mode with Networking and perform a full system scan from there:
[GI=method-2]System Restore can also be useful in some cases:
Restore files one-by-one using Windows Previous Versions
This feature might work for some users.
Make use of ShadowExplorer
If the virus failed to delete Shadow Copies, use ShadowExplorer to recover all your files.
No decryption tool is currently available.

Report it and recover your files
Report it
Report the attack even if you do not expect the files back: insurers and banks ask for the report number, and police use the contacts in the note to link cases.
- United States
- FBI IC3 · FTC ReportFraud
- United Kingdom
- Report Fraud (formerly Action Fraud) · NCSC
- Australia
- ReportCyber (ASD)
- EU countries
- Europol: national reporting sites
Give the victim ID, the note and the date the files were encrypted. A business that holds personal data may also have to notify its data protection authority, in the EU within 72 hours.
Backups: the 3-2-1 rule
Keep three copies of files that matter, on two kinds of storage, with one copy offline or off-site.
A disk that stays plugged in is reached by malware like Bondy virus, Bondy ransomware, Bondy file locker together with the PC; one you connect only for the backup is not.
On Windows 11, File History keeps versions on an external drive, and OneDrive keeps earlier versions of synced files. Before restoring anything, make sure the PC no longer shows files that end in .bondy and no longer open.
Setting it up step by step: 3-2-1 backups on Windows 11 and 10.
Choose a proper web browser and improve your safety with a VPN tool
Online spying has got momentum in recent years and people are getting more and more interested in how to protect their privacy online.
One of the basic means to add a layer of security - choose the most private and secure web browser. Although web browsers can't grant full privacy protection and security, some of them are much better at sandboxing, HTTPS upgrading, active content blocking, tracking blocking, phishing protection, and similar privacy-oriented features.
However, if you want true anonymity, we suggest you employ a powerful VPN - it can encrypt all the traffic that comes and goes out of your computer, preventing tracking completely.
Lost your files? Use data recovery software
While some files located on any computer are replaceable or useless, others can be extremely valuable.
Family photos, work documents, school projects - these are types of files that we don't want to lose. Unfortunately, there are many ways how unexpected data loss can occur:
- power cuts
- Blue Screen of Death errors
- hardware failures
- crypto-malware attack
- even accidental deletion
To ensure that all the files remain intact, you should prepare regular data backups. You can choose cloud-based or physical copies you could restore from later in case of a disaster. If your backups were lost as well or you never bothered to prepare any, can be your only hope to retrieve your invaluable files.
Questions about Bondy virus, Bondy ransomware, Bondy file locker
Is there a decryptor for .bondy files?
That depends on the family behind the .bondy extension, which this guide cannot confirm yet from the reports alone. Check No More Ransom and ID Ransomware with your ransom note and one encrypted file; they list families with free tools.
If none exists today, keep the encrypted files and a copy of the note on a separate drive, because decryptors are sometimes published months later after flaws are found or servers are seized. Never buy a decryptor from a website that is not the security company that made it.
How do I open .bondy files?
You cannot open them by renaming or by choosing another program. The .bondy ending shows that Bondy virus, Bondy ransomware, Bondy file locker encrypted the content, and only the matching key can reverse it.
Renaming a file back to .docx or .jpg changes nothing except the icon, and it can confuse a future decryptor, so leave the names as they are.
To get the content back, use a backup, an unencrypted copy elsewhere, or a decryptor listed on No More Ransom if one exists for Bondy virus, Bondy ransomware, Bondy file locker. Store the encrypted files on an external disk until then.
Did Bondy virus, Bondy ransomware, Bondy file locker steal my files or passwords?
We do not know yet. Nothing published so far shows data theft by Bondy virus, Bondy ransomware, Bondy file locker, but the only confirmed sign is files that end in .bondy and no longer open, which says nothing about what happened before.
Many current ransomware attacks copy files or run a password stealer first, so it is wise to act as if they did.
From a clean device, change the passwords that were saved in the browsers on this PC, starting with e-mail and banking, sign out of all sessions and turn on two-step verification. Watch bank statements and account activity for the next few weeks.
Should I pay the ransom?
We advise against it, and so do the FBI, Europol and national cyber agencies. Payment does not guarantee a working tool: some attackers never reply, some tools damage files, and some variants have no decryptor at all. Paying also funds further attacks and can make you a target again.
Before considering payment, try every recovery option in this guide and report the attack. Companies must involve their legal adviser and insurer, because payments to sanctioned groups can be illegal. If files are truly irreplaceable, store the encrypted copies and wait; decryptors sometimes appear later.
Can a data-recovery company decrypt my files for a fee?
Only if a decryptor already exists or the company pays the attackers for you. Some "ransomware recovery" services advertise that they can decrypt families with no known flaw; in practice they negotiate with the attackers and add their own fee. Others use the same free tools listed on No More Ransom.
Before you hire anyone, ask in writing how they will recover the files, whether they will contact the attackers and what happens if they fail. A legitimate service answers clearly. If a free decryptor exists for your family, you can run it yourself.
How did Bondy virus, Bondy ransomware, Bondy file locker get on my computer?
The way Bondy virus, Bondy ransomware, Bondy file locker spreads has not been documented yet, so look at your own recent activity. On home PCs, ransomware most often comes with cracked programs, game cheats, key generators and fake updates, or with an e-mail attachment that was opened.
On business networks, attackers usually log in through Remote Desktop with a stolen or guessed password. Think back to what was downloaded or installed in the days before files that end in .bondy and no longer open, and check the Downloads folder and Installed apps sorted by date. Keep anything suspicious for your report, but do not run it again.
Is Bondy virus, Bondy ransomware, Bondy file locker the same as other ransomware with a similar name?
Not necessarily. Ransomware names come from the file extension, the note or a word in the code, so unrelated families often end up with similar names, and one family can appear under several names. The difference matters: a decryptor or advice for one family does not fit another and can damage files.
Compare the ending added to your files and the exact name of the note with the summary table at the top of this guide, then upload the note and one encrypted file to ID Ransomware from a clean device. If the result names another family, follow the guide for that family instead.
Can I delete HELP_DECRYPT_YOUR_FILES.txt?
Yes, the note itself is harmless text and deleting it does not affect your files. Keep at least one copy first, outside the infected PC. HELP_DECRYPT_YOUR_FILES.txt contains your personal ID and the attackers' contact details, which identification services use to tell which family encrypted your files, and which a decryptor may need later.
Police reports also ask for it. Once you have saved a copy, you can remove the notes from every folder after the ransomware program has been removed and your files are restored or backed up.
My files got .bondy overnight. What happened?
Ransomware often runs at night or when the PC is idle, so the encryption finishes before anyone notices. It usually entered earlier through a cracked program, a fake installer, an e-mail attachment or remote desktop with a weak password.
The .bondy extension marks every file it reached. Start by disconnecting the PC from the network, then identify the family from the ransom note and one encrypted file, check for a decryptor, and look for copies in backups and OneDrive before you consider anything else.
Will Fortect remove Bondy virus, Bondy ransomware, Bondy file locker?
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 Bondy virus, Bondy ransomware, Bondy file locker, 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
- Wikipedia: RSA (cryptosystem) (read October 6, 2026)
- Usunwirusa: Usunwirusa (read October 6, 2026)
- Cisco: What Is Spam Email? (read October 6, 2026)
- CISA: StopRansomware (read October 6, 2026)
- No More Ransom (read October 6, 2026)