ALVIN ransomware, Alvin file virus: what it is and how to remove it
Alvin ransomware is a cryptovirus that encrypts all non-system computer data and demands a ransom for decoding it. It's a new type of DMR malware.
Facts checked October 7, 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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ALVIN ransomware, Alvin file virus: summary
| Distribution | Spam emails, infectious hyperlinks, software "cracks" |
|---|---|
| NAME | ALVIN ransomware, Alvin file virus |
| TYPE | Ransomware, cryptovirus, malware |
| EXTENSION | .ALVIN |
| RANSOM NOTE | Demands, instructions, and contact information is provided in a newly created file HOW TO ; the text of the note is not in our records |
| RANSOM AMOUNT | The amount is not specified, but they demand Bitcoin cryptocurrency as ransom |
| 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 13 more facts
| CONTACT EMAIL | Two emails are provided – rimon.argan@gmail.com or poeasws@protonmail.com. Second one should only be used if the perps don't respond within 24 hours to a letter sent to the first given email. |
|---|---|
| Detection names | No Microsoft detection name is known |
| Encrypted file extension | .alvin |
| Decryptor | No free decryptor is known for this variant; check No More Ransom (nomoreransom.org) for updates |
| Damage | Not recorded in the old report |
| Name | ALVIN ransomware, Alvin file virus |
| Type | File-encrypting ransomware |
| Symptoms | Files renamed with a new extension |
| Evidence | 4 write-ups by security sites; details still limited |
| Encrypted files | .alvin |
| Free decryptor | No free decryptor is known (checked 7 October 2026) |
| First seen | 28 October 2020 |
| Facts checked | 7 October 2026 |
- File extension:
.alvin
From our report of Oct 2020 · not reviewed since
More from our earlier report on ALVIN ransomware, Alvin file virus
- Victims shouldn't try and remove virus manually.
- Let the professionals do the dirty work - use anti-malware software, such as or , to automatically remove ALVIN virus
How ALVIN ransomware, Alvin file virus behaves
From our report of Oct 2020 · not reviewed since
Alvin ransomware - new type of DMR malware that will lock your files
Alvin ransomware is a cryptovirus that encrypts all non-system computer data and demands a ransom for decoding it.
It's a new type of DMR malware. The whole encryption is done using AES algorithms. Victims' infected files gain an extension .ALVIN, hence the name of the virus.
After the dirty deed is done, users notice a new file - "HOW TO RECOVER ENCRYPTED FILES.txt" where the cybercriminals urge the victims to contact them via email - rimon.argan@gmail.com or poeasws@protonmail.com (the latter should be used if the perpetrators don't respond within 24 hours). As a ransom, the victims would have to pay an unspecified amount of Bitcoins.
As a sign of good faith, the cybercriminals offer the victim to test their decoding tool by sending one file (not larger than 1MB) for a free decryption, thus proving that the alleged decoding tool exists. The perpetrators also threaten that they will keep your decryption code only for a week.
In no way does that mean that after contacting the developers of ALVIN virus and meeting their ransom demands, the user will ever get the tool to decode his encrypted data.
In most cases, users not only don't get what was promised but instead, some more malware is installed on their device so that the crooks could get even more out of their victims. We strongly recommend to never give in to the ransom demands.
The whole ransom note reads as follows:
The ALVIN virus might do some more damage, apart from encrypting your data. If it's anything like his big brother DMR ransomware, it will alter Windows host files preventing the victims from visiting security-related sites and networks and finding out alternate data recovery solutions.
That said, users should remove ALVIN virus right after its detection before it has done more harm. Trustworthy and reliable anti-malware software is a must nowadays.
Unfortunately, ALVIN ransomware removal won't decrypt your data, but it will prevent your incoming files from being encrypted in the future. However, corrupted, altered Windows files might keep you from using your computer properly, even after the deletion of the virus.


From our report of Oct 2020 · not reviewed since
Methods of malware/ransomware distribution
The most common way the ALVIN virus and other malware spreads, according to losvirus.es, is via email spam.
Users usually receive legitimately looking emails that appear to come from their employers, banks, etc. Attached to these emails are malicious files that, right after opening/downloading, start the infection.
Internet users should always be aware of what they're opening, what they're clicking on because the web is full of traps. Never open emails that look fishy, never open any email attachments without scanning them first with anti-malware software.
Malware is also distributed via torrent sites, such as BitTorrent, The Pirate Bay, etc., whilst downloading game cheat codes, illegal activation tools (aka "cracks"). To evade becoming victims, users should download their desired apps only from the developers.
To ensure systems' safety, users should acquire dependable anti-malware software that would keep them safe while browsing.
The ALVIN ransomware, Alvin file virus ransom note
We did not record the full text of the ransom note in our report.
How to remove ALVIN ransomware, Alvin file virus
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 ALVIN ransomware, Alvin file virus 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 ALVIN ransomware, Alvin file virus 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 identify the family
The name of the family decides whether a free decryptor can help. Copy the ransom note and two small encrypted files to a USB stick, and check them on another device with ID Ransomware or Crypto Sheriff.
Note the extension added to the files, the contact address and the victim ID shown in the note. Keep the originals on the Windows 11 or Windows 10 PC untouched.

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 ALVIN ransomware, Alvin file virus, no free decryptor is known (checked 7 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 ALVIN ransomware, Alvin file virus 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 ALVIN ransomware, Alvin file virus 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 Oct 2020 · not reviewed since
ALVIN virus removal guide
Removing malware from an infected system isn't a walk in the park.
If you're not a highly-experienced computer user - leave this tall task to the professionals, as you could do more harm than good. Reliable software should be used for removal. To remove ALVIN virus from your computer system, use or , as both of these apps are able not only to detect the virus but also to completely remove it.
ALVIN ransomware removal should be the first thing you do, but to restore your systems' state to normal, you should take another step, as the ransomware might have corrupted some files and edited the Windows Registry or Power Shell. That altercation might lead to constant system crashes, lag, or any other abnormal behavior.
[GI=method-1]If you are unable to delete the infection in normal mode, you should access Safe Mode with Networking as follows:
[GI=method-2]System Restore can be used to delete malware
Recovery programs might help some victims to restore at least a part of the lost data.
Try Windows Previous Versions
This method only works if you had System Restore point setup (which was not deleted by malware).
ShadowExplorer can be useful
If the virus failed to delete Shadow Copies from your system, you should be able to recover all your files with ShadowExplorer.
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.
Make the next attack harmless
ALVIN ransomware, Alvin file virus could only hurt the files that had no second copy, and the signs (files that end in .alvin and no longer open) showed exactly which ones those were. The 3-2-1 rule fixes that:
- three copies
- two media
- one disconnected
A practical version for a home PC: OneDrive or another cloud backup with version history, plus an external disk that you plug in once a week for File History and then unplug. Test a restore now and then by opening a few files from the backup on another device.
Details, schedules and what not to back up are in our 3-2-1 backup guide for Windows.
Do not let government spy on you
The government has many issues in regards to tracking users' data and spying on citizens, so you should take this into consideration and learn more about shady information gathering practices.
Avoid any unwanted government tracking or spying by going totally anonymous on the internet.
You can choose a different location when you go online and access any material you want without particular content restrictions. You can easily enjoy internet connection without any risks of being hacked by using VPN.
Control the information that can be accessed by government any other unwanted party and surf online without being spied on. Even if you are not involved in illegal activities or trust your selection of services, platforms, be suspicious for your own security and take precautionary measures by using the VPN service.
Backup files for the later use, in case of the malware attack
Computer users can suffer from data losses due to cyber infections or their own faulty doings.
Ransomware can encrypt and hold files hostage, while unforeseen power cuts might cause a loss of important documents. If you have proper up-to-date backups, you can easily recover after such an incident and get back to work. It is also equally important to update backups on a regular basis so that the newest information remains intact - you can set this process to be performed automatically.
When you have the previous version of every important document or project you can avoid frustration and breakdowns. It comes in handy when malware strikes out of nowhere. Use for the data restoration process.
Questions about ALVIN ransomware, Alvin file virus
Is there a decryptor for .alvin files?
That depends on the family behind the .alvin 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 .alvin files?
You cannot open them by renaming or by choosing another program. The .alvin ending shows that ALVIN ransomware, Alvin file virus 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 ALVIN ransomware, Alvin file virus. Store the encrypted files on an external disk until then.
How did ALVIN ransomware, Alvin file virus get on my computer?
The way ALVIN ransomware, Alvin file virus 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 .alvin 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.
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.
Did ALVIN ransomware, Alvin file virus steal my files or passwords?
We do not know yet. Nothing published so far shows data theft by ALVIN ransomware, Alvin file virus, but the only confirmed sign is files that end in .alvin 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.
Is ALVIN ransomware, Alvin file virus 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.
My files got .alvin 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 .alvin 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 removing ALVIN ransomware, Alvin file virus unlock my .alvin files?
No. Removing ALVIN ransomware, Alvin file virus stops it from encrypting more files and from starting again, but it does not decrypt the files that already end in .alvin. The scanner does not have the attackers' key.
Files come back only from a backup, from copies the ransomware did not reach, such as OneDrive version history, Previous Versions, e-mail attachments or a phone, or with a working decryptor if one exists.
Remove the ransomware first anyway: if you restore files while it is still active, it can encrypt them again. Keep the encrypted files; a decryptor may be published later.
Will Fortect remove ALVIN ransomware, Alvin file virus?
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 ALVIN ransomware, Alvin file 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.
Sources
- Wikipedia: Advanced Encryption Standard (read October 7, 2026)
- Losvirus: Losvirus (read October 7, 2026)
- CISA: StopRansomware (read October 7, 2026)
- No More Ransom (read October 7, 2026)
- FTC: How to recognize, remove and avoid malware (read October 7, 2026)