Zollo Ransomware Removal: .zollo6 Files, Ransom Note and Recovery Options

Your documents still have familiar names, but a new ending has appeared and they no longer open. Nearby, an HTML note demands your attention.

If that ending is .zollo6, preserve what you see before trying the first recovery promise you find.

Overview

The filename pattern identifies a reported MedusaLocker variant

Zollo ransomware encrypts files and adds a suffix such as .zollo6. The number can vary, so identification should include the accompanying evidence.

The reported variant belongs to the MedusaLocker family. It also changes the desktop wallpaper and leaves a note named READ_NOTE.html.

A photo originally called 1.jpg may become 1.jpg.zollo6. The added name explains the visible change, but removing it would not undo encryption.

The illustration uses made-up personal filenames and dates. It is not a directory from an actual victim or a computer deliberately infected for this guide.

The note mixes recovery promises with pressure

The demand claims RSA and AES encryption and says the attackers hold confidential information. It threatens disclosure and a higher price if contact is delayed beyond 72 hours.

Those are statements by the extortionist. The note alone cannot establish which files were taken, whether anything was uploaded or whether payment would cause deletion.

Reported contact identifiers include recovery1[at]salamati[.]vip and recovery1[at]amniyat[.]xyz. Preserve them as incident evidence, not as recommended technical-support addresses.

The offer of a small test decryption does not guarantee a working full recovery tool. It also should not persuade you to send sensitive samples.

Removal and recovery solve different parts of the incident

Zollo ransomware removal aims to eliminate malicious execution and unauthorized access. Restoring documents requires intact copies or a genuinely compatible recovery method.

• Contain affected machines and protect disconnected copies.
• Preserve the note, full filenames and useful security records.
• Investigate access and any alleged data theft.
• Restore only after the environment can be trusted again.

No Zollo sample was run for this article. The initial intrusion route and outcome for a particular victim must be investigated, not inferred from the extension.

No compatible Zollo decryptor was verified here. That is different from declaring that a tool can never become available.

Read the Changed Files Without Making Them Harder to Recover

The added suffix is a clue, not the damaged content

Windows may show an unfamiliar file type because the last part of the name changed. The original document format can still be visible earlier in the filename.

That original ending may help classify what was affected: photographs, spreadsheets, project data or other records. It does not mean the contents remain readable.

Do not perform a bulk rename as a repair attempt. It can obscure the identifying pattern while leaving the underlying encrypted data unchanged.

A recovery specialist may need untouched samples with their complete names. Keep originals separate from any working copies used for analysis.

The ransom note belongs in the evidence collection

READ_NOTE.html is a common-looking name that other attacks may also use. Match its contents, contacts and changed filenames rather than relying on the note name alone.

Preserve the file without following its links or contacting the sender. A responder can examine its text in a controlled way.

The note’s warnings against independent help serve the attacker’s interests. They are not neutral advice about which trustworthy recovery tools are technically compatible.

That does not mean experimentation is harmless. Test recognized tools on duplicates and follow their requirements rather than treating the attacker’s dishonesty as permission to improvise.

The wallpaper is a warning sign, not a complete diagnosis

A changed background can make the attack obvious, but it does not show its full reach. Shared storage or other accounts may need assessment too.

Conversely, absence of the wallpaper on a second machine does not prove its files or credentials are unaffected. Check access and changes rather than appearance alone.

MedusaLocker and other similarly named ransomware groups are not interchangeable. A guide or decryptor for a different family should not be selected because its name sounds close.

For a workplace incident, provide these identifiers to the response team. Let technical evidence determine classification rather than choosing a family from search-result wording.

How the Zollo Ransomware Attack Works

Step 1: Unauthorized Execution Reaches Accessible Data

Before the new extension appears, malicious activity has gained a way to run. The available Zollo description does not identify one universal entry method.

Investigators may examine recent downloads, email interactions, exposed services, account activity and security alerts. Which route matters depends on the incident’s own timeline.

Do not conclude that a particular employee caused the attack because they remember opening an attachment. Correlation needs checking against the execution and access records.

The same caution applies to blaming a remote-access service automatically. Family history can guide investigation without proving how this machine was compromised.

Record when files last opened normally and when the changes were first noticed. That range is often more useful than a guess about the first suspicious event.

Step 2: Encryption Makes Existing Files Unusable

The ransomware transforms file contents and adds its identifying ending. The familiar original name can remain visible even though the application can no longer read the data.

A scan can detect malicious software associated with that operation. It does not automatically reconstruct the previous contents of the documents.

Files on storage accessible to the compromised account may also be at risk. Investigate mapped drives and shared locations without assuming every connected system was encrypted.

Disconnect valuable backup media before testing recovery. An unaffected copy is useful only while it remains out of reach of the malicious environment.

If encryption is visibly continuing, obtain immediate containment help. Response teams may need to balance stopping damage against preserving evidence in memory.

Step 3: The Demand Adds a Data-Leak Threat

The note says personal or confidential information has been collected. This turns an availability problem into a possible confidentiality incident as well.

Take that possibility seriously, but investigate it separately. The words in the note do not identify which records left the environment or who received them.

Useful evidence can include account access, unusual transfer activity and the reach of compromised privileges. A responsible assessment may require specialists and preserved logs.

Do not send the attacker a list of sensitive files to ask what they have. That can disclose more information and does not produce independent verification.

For an organization, coordinate decisions about affected people, partners and reporting duties with the appropriate incident and legal teams. Avoid promising that no data escaped without evidence.

Step 4: A Deadline Tries to Make Contact Feel Like the Only Option

The reported 72-hour price warning encourages a rushed conversation. The attacker controls the demanded amount and can change its claims regardless of the printed deadline.

A small sample returned in readable form would show something about that sample. It would not establish that every file can be restored safely.

Payment also cannot independently prove that stolen data was deleted. A promise to destroy a private server is not a verifiable deletion record.

Do not interpret the deadline as a reason to reconnect backup drives or run an unknown decryptor. Those shortcuts can damage the options still available.

Use the time to contain the incident, identify important data and obtain qualified help. The response should be organized around your recovery needs, not the extortionist’s schedule.

What to Do If Your Files End in .zollo6

1. Separate affected systems from the network. Disconnect Wi-Fi and Ethernet, and keep removable backup media away from the suspected environment.

   At work, alert the response team before changing multiple machines. A visible encrypted folder may not identify where the intrusion began.

2. Preserve the identifying material. Keep full filenames, the note, contact identifiers, relevant alerts and the approximate discovery time.

   Do not distribute the executable or confidential samples to casual helpers. Qualified responders can specify the evidence they need and how it should be handled.

3. Find the last known-good copies. List disconnected drives, versioned cloud files, previous project copies and managed backups without restoring them into the compromised system yet.

   Confirm that a copy is readable and recent enough for your needs. A backup job marked successful does not by itself prove its contents are intact.

4. Investigate accounts and possible disclosure. Assess which identities and shared locations the intruder could reach. Reset exposed access from a trusted device.

   Keep the encryption and data-leak investigations distinct. Do not assume the absence of a public leak proves the attacker never accessed information.

5. Arrange cleanup or rebuilding before restoration. Use trusted security tools and technical assistance rather than software offered in the ransom note.

   If system integrity is uncertain, a clean reinstall may be appropriate after necessary evidence and recoverable data are preserved.

   Malwarebytes is relevant to malicious software detection. A completed scan does not certify that a business network, every account or all remote access is secure.

   AdGuard may reduce later exposure to malicious advertising. It does not remove encryption or make an attacker-controlled recovery program trustworthy.

6. Report the extortion and reject guaranteed recovery offers. Preserve payment records if you already paid, and contact the relevant provider and authorities promptly.

   Ask any recovery company to explain its method and limitations in writing. Do not confuse negotiating with the attacker with an independently demonstrated technical solution.

Remove Zollo Before Reconnecting Recovered Data

Step 1: Preserve the incident details before cleanup

Preserve READ_NOTE.html and complete .zollo6 names without following the note’s links. Keep unaffected backup drives disconnected while shared access is assessed.

On managed equipment, let the incident team collect needed evidence before quarantine or restarts. Do not use the affected computer to administer the recovery environment.

Step 2: Install Malwarebytes, scan Windows, and quarantine threats

Use this procedure on a personal Windows PC after preserving the incident details. For a managed computer, let your security team decide when scanning should begin.

Malwarebytes can find and quarantine threats. Its free Custom Scan is separate from paid real-time protection and Threat Scan. Neither edition supplies ransomware decryption keys.

1. Download the Windows installer.

   Open the official download page using the button below. Select Free Download there and save the Windows installer.

   If the affected PC cannot browse safely, use a trusted computer and arrange an appropriate transfer without exposing clean backup media.

   Malwarebytes for Windows

   Manual scanning and quarantine, with optional paid protection.

   Download Malwarebytes

   Opens the official free-scanner page. Choose its Windows download; paid protection is optional.

   See Malwarebytes Premium protection

2. Open the setup file.

   Open Downloads and double-click the MBSetup file. If Windows requests permission, check that the prompt identifies Malwarebytes before allowing the installation.

   

3. Complete setup without accepting unwanted extras.

   Select Install, choose the appropriate Personal or Business device option, and continue. Business-managed computers should be handled through their administrator’s process.

   

   Review any browser extension, trial, or subscription offers. Skip optional features you do not want, then select Open Malwarebytes when setup finishes.

   

4. Choose a supported scan.

   Find the Scanner tile on the dashboard. For a free Custom Scan, open its three-dot menu, select Advanced Scan, and choose Custom Scan.

   Expand the file-location selector and select the system drive and relevant locations. Review potentially unwanted program settings, then select Start Custom Scan.

   A paid or eligible trial edition may also offer Threat Scan. Use the controls available in your edition; do not disable Windows protections to unlock another option.

   

5. Let the scan complete and inspect its findings.

   Keep the computer powered on while scanning and wait for the results. A large Custom Scan can take longer than a scan limited to common locations.

   Review each detection and its location. Leave confirmed threats selected and choose Quarantine. Save the report if a detection is unclear rather than adding it to exclusions.

   The results illustration uses sample detections to show the Quarantine control. Those names are not identifiers for the malware discussed in this article.

   

6. Finish removal and handle a requested restart.

   Follow the quarantine prompts. If a restart is requested, save your work and coordinate it with anyone preserving evidence before restarting.

   

   Reopen the application afterward and review the result. Repeated detections, blocked removal, or signs of continuing access need further investigation, not an automatic clean-device conclusion.

The screen design can vary by installed release. Follow the named controls and the vendor’s current scan instructions if your version looks different.

Step 3: Use a second opinion if findings remain unresolved

HitmanPro provides an optional second opinion when a Windows infection or unresolved finding warrants another check. Run scanners sequentially, not at the same time.

Scanning is free. Removal needs an eligible one-time 30-day trial or a paid license. A computer that already used its trial may not qualify again.

1. Obtain HitmanPro from the established download route.

   HitmanPro

   Optional second-opinion Windows scanner.

   Download HitmanPro

   Free scan. Removal requires an eligible trial or paid license.

2. Launch the downloaded program.

   Open Downloads and run the appropriate HitmanPro file for your system. Check the publisher in any Windows permission prompt before allowing it.

   

3. Start the scan.

   Open HitmanPro, select Next, and follow its license and setup prompts. Its cloud checks require an internet connection; arrange controlled access if the PC was isolated.

   

4. Review the results before removal.

   Allow scanning to finish. Inspect the listed objects and proposed actions, then select Next for confirmed unwanted items. Save uncertain findings for qualified assistance.

   

5. Use an eligible license and complete cleanup.

   If available, select Activate free license and follow the trial prompts. Otherwise, use an existing license or retain the report; do not assume purchase is mandatory.

   

   Finish the proposed cleanup and restart if requested. If problems persist, keep both scanners’ reports and seek help rather than repeatedly activating unfamiliar repair tools.

Step 4: Review access before the recovered data returns

Keep the scanner reports and escalate unexplained access or detections that return. A controlled reinstall may be needed if cleanup cannot establish trust.

The MedusaLocker family label does not identify a working Zollo decryptor. Continue the separate recovery assessment below, using copies rather than encrypted originals.

Recovery Options for Zollo Encrypted Files

Removing ransomware stops or contains the malicious software. It does not turn encrypted bytes back into working documents. Keep untouched encrypted originals before testing any recovery method.

Use a clean, updated recovery environment and keep it separate from systems still under investigation. Restore files only after the infection and its access path are addressed.

Option 1: Restore a verified backup or earlier cloud version

1. Find a backup dated before the encryption. Keep the original backup unchanged and check that representative documents actually open in a trusted environment.

2. Restore to a separate clean location, not over the only encrypted copies. Use the backup application’s documented restore process for databases and application-specific data.

3. For cloud storage, open its genuine version-history or restore controls from a trusted device. Compare dates and select an unaffected version where one exists.

4. Inspect restored documents and confirm that the required recent work is present. A familiar filename alone does not verify successful restoration.

Windows File History helps only if it was configured and a usable backup survives. Open Control Panel, then System and Security, File History, and Restore personal files.

Browse the available dates and preview the files. Use Restore to for a separate destination when offered, rather than replacing your only copy during testing.

Option 2: Look for a decryptor that matches the actual variant

A decryption tool must support the ransomware family and version involved. A matching extension, similar name, or confident advertisement is not enough.

• No More Ransom’s decryption catalog lists supported families and their tool instructions.
• Emsisoft’s ransomware decryptors provide family-specific tools and limitations.
• ID Ransomware can help identify a family from appropriate evidence, subject to its upload and privacy terms.

1. Record the ransom-note filename, appended extension, and existing detection. Do not identify the ransomware family from a filename extension alone.

2. Check the tool’s exact supported variant and requirements. For sensitive business material, ask your responder what evidence can be shared before uploading anything.

3. Read the developer’s instructions and run a supported tool only on copies in a separate location. Keep the original encrypted data even after an apparent success.

4. If no suitable decryptor is available, retain the copies and revisit trusted catalogs later. Do not pay a stranger to unlock a supposedly hidden download.

Option 3: Assess surviving snapshots without assuming they exist

Some systems retain earlier snapshots or previous versions; others never had them or lost them during the incident. Check availability instead of trusting the ransom note.

On Windows, open the affected folder’s Properties and look for Previous Versions. Open a suitable earlier version first and copy needed data to a different location.

If no version appears, that method has no available copy to restore. It does not establish whether a separate backup or cloud version exists.

Option 4: Consider deleted-file recovery only for recoverable originals

File-recovery software does not decrypt ransomware’s encrypted output. It may help only when readable originals or other usable copies remain recoverable on the storage.

Further writes can overwrite that recoverable data. For valuable files, have a qualified specialist assess or image the source drive before installing software or starting another scan.

Use the procedure below only when that recovery approach is appropriate. Install the tool elsewhere and save recovered files to a separate drive or clean destination.

1. Open the established recovery-tool download route.

   EaseUS Data Recovery Wizard

   File recovery, not ransomware decryption.

   View EaseUS Data Recovery Wizard

   Check current compatibility, free-edition limits, and licensing before installation or purchase.

2. Install away from the recovery source.

   Download and install on a separate suitable system or drive, following a specialist’s plan when necessary. Do not install into the disk you hope to recover.

3. Select the source and scan for recoverable data.

   In the recovery application, choose the affected drive or location and begin scanning. Selecting an encrypted file does not make the tool a decryptor.

   

4. Inspect what the scan actually found.

   Use the available filters to locate needed document types. Preview representative files to see whether their contents are readable, not merely listed by name.

   

   A preview can help evaluate a result, but free-edition export limits may still apply. Do not purchase solely because a scan displays filenames.

   An unavailable preview is not a successful recovery. A listed filename may still refer to damaged or unusable data.

   

5. Recover to a different destination and verify the files.

   Select appropriate readable results, choose Recover, and select a different drive or safe location. Never save the recovered output back over the recovery source.

   

   Open representative recovered files in the clean environment. Keep the original encrypted copies, scan reports, and a record of which method recovered each set.

If recovery fails, stop experimenting on the only source. Preserve it for qualified assistance or a future matching decryptor rather than accepting guaranteed-recovery sales claims.

Build a Recovery Order Around What Matters Most

A large collection can make every file feel equally urgent. Start by identifying the records that would be hardest to replace or most important to operations.

For a household, that might mean irreplaceable photographs and personal records. For a business, it may involve customer commitments, financial data and current project work.

Write down which versions exist and where they are stored. A recent encrypted copy and an older readable copy solve different parts of the problem.

Test representative files before declaring a restore complete. A spreadsheet can open while missing its latest transactions, and an application may depend on several linked files.

Restore into a verified clean environment and control who can access it. Bringing damaged or unreviewed accounts back immediately can undermine the recovery.

Keep the evidence archive even after important documents return. The questions of unauthorized access and possible disclosure may continue after day-to-day work resumes.

Once recovery stabilizes, review why usable backups survived or failed. The No More Ransom prevention advice provides a starting point for improving resilience.

Make the Return to Normal Work a Deliberate Decision

Choose who will confirm that restored information is usable. The person who runs a copy job may not know whether a financial or project record is complete.

Check representative folders with their usual owners. Ask them to verify content, dates and related files before the recovery is treated as finished.

For an application database, obtain the appropriate consistency checks from its administrator. A file being readable is not always enough to resume a business service safely.

Keep a note of missing periods or records that must be reconstructed. An incomplete restore should not silently become the trusted reference for later work.

Review access separately from restored data. Bringing back a user account or old configuration without checking it may reintroduce a problem unrelated to the encrypted files.

Finally, retain a disconnected recovery copy while normal service resumes. Do not immediately overwrite every older backup with the first collection that appears to work.

Frequently Asked Questions

Does .zollo6 always identify Zollo ransomware?

It is a reported Zollo indicator, but identification should also consider the note, contacts and file behavior. The number in the ending can vary.

Can renaming an encrypted document make it work?

No. A changed name is only the visible label. Renaming does not restore the earlier data, and it can make untouched evidence harder to recognize.

Will an antivirus scan decrypt my files?

No. Detection and removal address malicious software. File restoration requires surviving readable copies or a recovery method that actually supports the affected encryption.

Does the note prove that confidential data was stolen?

No. It records an extortion claim. Investigate account access and transfer evidence, taking the possibility seriously without treating the attacker’s words as independent proof.

Should I contact the listed addresses before 72 hours?

Do not let the demand dictate your technical response. Preserve the contacts for responders and seek qualified assistance rather than rushing into payment discussions.

Is a Medusa decryptor suitable for this MedusaLocker variant?

Not on that basis. Similar names do not establish compatibility. Verify the exact tool, supported variant and requirements, and never test on your only copy.

The Bottom Line

Start Zollo ransomware removal with isolation and evidence preservation, not payment or bulk renaming. Establish a clean destination before returning readable copies to use.

Keep the leak allegation separate from encryption, and verify recovery against the exact variant. If important or shared systems are affected, involve qualified responders promptly.