Avaddon ransomware: what it is and how to remove it
Avaddon is a cryptovirus that has been first spotted by cybersecurity researcher GrujaRS in June 2020. According to experts, this ransomware can be predicted to be exceptionally active as the criminals behind it are applying all kinds of dissemination strategies, including Phorphiex/Trik Botnet, wink spam attacks, Ransomware-as-an-Affiliate (RaaS) for Russian hackers, exploit kits and more.
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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Avaddon ransomware: summary
| Detection names | No Microsoft detection name is known |
|---|---|
| Ransom note | readme.html |
| Contact | billy73@3189.com |
| Encrypted file extension | .avdn |
| Decryptor | No free decryptor is known for this variant; check No More Ransom (nomoreransom.org) for updates |
| Distribution | Not recorded in the old report |
| 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 10 more facts
| Damage | Not recorded in the old report |
|---|---|
| Name | Avaddon ransomware |
| Type | File-encrypting ransomware |
| Symptoms | Files renamed with a new extension and a ransom note left in folders |
| Evidence | 5 write-ups by security sites; no sample analysed yet |
| Encrypted files | .avdn |
| Attacker contacts | billy73@3189.com |
| Free decryptor | No free decryptor is known (checked 6 October 2026) |
| First seen | 29 September 2020 |
| Facts checked | 6 October 2026 |
- File extension:
.avdn - Note file:
readme.html - Contact:
billy73@3189.com
From our report of Sep 2020 · not reviewed since
More from our earlier report on Avaddon ransomware
- The ransomware changes the extension of personal people's files to .avdn
- As a typical file-encrypting virus, it replaces the desktop background to "All your files has been encrypted" note and generates an HTML file -readme.html
- The ransomware is programmed to skip CIS countries by initiating self-destruction
- The size of the ransomware
- It can vary from 350 USD to 900 UAS depending on the amount of encrypted data
- .avdn files cannot be recovered for free.
- Experts provided the analysis of the virus and it seems that it's using online IDs that cannot be deciphered without a unique key
- Ransomware may trigger Windows malfunctions by compromising registries, boot files, libraries, and more.
- To fix suchlike damage, try running utility
- Your files are locked due to a vulnerability in your system!
- You will not be able to decrypt the files yourself, in the worst case you can destroy the data irreversibly.
- The only way to unlock your data is to buy the decryption program.
- If you do not pay for recovery, then all the confidential data from your computer WILL BE TRANSFERRED TO PUBLIC ACCESS!
- If you cannot do this yourself, find a data recovery company in internet.
- They cannot help you unlock your data, because only we have decryption key, but will help you make a payment and provide you guarantees.
- DATA RECOVERY AGENCIES WORK AND DURING THE CORONOVIRUS QUARANTINE, THEY WILL HELP YOU REMOTE.
- Also, I ask you to note, you have no long time, if you do not make payment soon, the price for the decryptor will double.
- So I recommend you dont waste time and move!
How Avaddon ransomware behaves
From our report of Sep 2020 · not reviewed since
Possible versions of the Avaddon file virus extensions that appear on encoded files
Avaddon ransomware uses the mix of AES and RSA encryption methods, so there are many similarities between this and other threats.
But there are particular features that help determine this virus and its versions from other ransom-demanding threats. It is believed that particular creators rely on the random character extensions creation, but we have determined a few particular versions of the malware already.
From our report of Sep 2020 · not reviewed since
.e5W7fivNP and .JGHh4eBP8Fd1I
The .e5W7fivNP version was noticed at the start of July 2020.
It is known that the threat is spread around using malicious macros and file attachments on email notifications. The second one mentioned - .JGHh4eBP8Fd1I got distributed a few days after.
The amount of ransom asked on the sY_readme.html window - $1495. Paying is never a solution. Contents of the note:
From our report of Sep 2020 · not reviewed since
.CaWdDadCcE
With the .CaEdDadCcE version the amount demanded was raised up to $2000 in Bitcoins.
The version that came out on September 8th in 2020 also came with a ransom note as a text file delivery. The tM1Au_readme.txt message listed the same Avaddon link on Tor browser and payment instructions.
From our report of Sep 2020 · not reviewed since
.bdCDdCBaAd
The version that appeared at the start of October carried out the ransom note with a text file named SxgPNwKy_readme_.txt that stated about the further options - paying the Bitcoin transfer via onion link that supposed to go via Tor web browser.
From our report of Sep 2020 · not reviewed since
.bbCceaBDEc
A version that appended all the encoded files with .bbCceaBDEc marker asked for payments in a message similar to other versions.
The text file named cx3lk_readme_.txt appeared in various folders with encoded files and on the desktop as soon as the encryption process ended.
The particular Avaddon ransomware threat can use various randomized extensions, as you can see. So pay attention to details like avaddonbotrxmuyl.onion link listed as the Tor-URL for the payment transfer and similar images, messages on those text files, and HTML windows.
Naturally, users get a shock finding their files locked by .avdn virus files and that is understandable. Not only the fact that your access to personal files is restricted worries. However, people should also consider the fact that having a ransomware virus on the system leaves it extremely vulnerable to other cyber attacks, for example, the infiltration of Trojan or spyware.
Therefore, it's important to remove Avaddon ransomware as soon as possible. If you found your files locked, do not hesitate and restart the system into Safe Mode to quarantine malicious processes, such as sava.exe. This way, the ransomware won't interfere with your security tool and you will be able to launch a full system scan.
Beware that not all malicious entries run by this ransomware can be detected. Take for instance a malicious img164186.jpg.js file, which is recognized by 35 AV tools out of 65 possible. Thus, using a weak security program can end up with a failed Avaddon removal.
From our report of Sep 2020 · not reviewed since
Avaddon ransomware is file-encrypting virus changing file names to .avdn and spreading via Phorphiex/Trik Botnet
Avaddon is a cryptovirus that has been first spotted by cybersecurity researcher GrujaRS in June 2020.
According to experts, this ransomware can be predicted to be exceptionally active as the criminals behind it are applying all kinds of dissemination strategies, including Phorphiex/Trik Botnet, wink spam attacks, Ransomware-as-an-Affiliate (RaaS) for Russian hackers, exploit kits and more.
The executable of the Avaddon ransomware (temp27472466.exe or img164186.jpg.js) runs PowerShell and Bitsadmin commands within %Temp% to enable the ransomware. The inbuilt file encryption software scans the machine for compatible file extensions and locks the ones that it successfully recognized by happening the .avdn file extension to each of them.
The virus also replaces the desktop background and creates a ransom note -readme.html (instead of the ID, people see the unique identification number), which redirects to the TOR payment site, which demands victims to purchase Bitcoins and pay for the Avaddon General Decryptor 350 USD in Bitcoins.
The Avaddon ransomware virus is a newcomer to the market of crypt-extortionists. Nevertheless, experts see its potential to become a prevalent cyber threat competing with families like GandCrab, Djvu, or Jigsaw. Such presumptions are based on the activity logs and infections rate.
According to the researchers, the campaigns that criminals behind this ransomware show positive dynamics. According to the cybersecurity firm Appriver, the spams distributed via Phorphiex botnet standalone reached over 300 potential victims within a few days. Even more, the ransomware can be spread by affiliate parties, Russian hackers basically, as the Avaddon ransomware virus is being offered as a Ransomware-as-an-Affiliate, paying the affiliate distributors 65% of the ransom.
However, the countries of the former Commonwealth of Independent States (CIS) are not very likely to meet this malware. According to its founders, the virus has an automatic command, which initiates Avaddon virus removal by default if the system detects the AZ, AM, BY, KZ, KG, MD, RU, TJ, UZ, UA, GE, and TM keyboard layout.
The other countries all across the world are at a high risk of getting acquainted with the .avdn file virus. Upon running the malicious sava.exe file, the virus changes the background image and creates a new directory, for example, Z folder.
Besides, all personal files are locked using a sophisticated encryption algorithm (AES, RSA, ChaCha or combination) and then launches the -readme.html note, which once clicked launches the TOR website and displays the following instructions:
The TOR website informs users about the size of the redemption (varies from $350-900) and provides a detailed guide on how to purchase Bitcoins and make the payment. In addition, people can find a support chat, a free Avaddon decryption test page, help page, and similar.
From our report of Sep 2020 · not reviewed since
A multiplicity of methods are applied for spreading the ransomware all across the world
According to the researchers, this particular ransomware stands out from the crowd as its developers are spreading the ransomware in an extremely active way.
The criminals themselves are using one basic dissemination strategy, known as spam.
The email messages that carry malicious attachments are being distributed by Phorphiex/Trik Botnet, which is a huge campaign capable of spreading hundreds of thousands of emails at a time (over 300,000 ar once). The details of the malicious email are the following:
The jpg attachment is, in fact, a malicious JavaScript file, which once opened downloads a malicious ransomware payload. Nevertheless, this particular virus can be distributed via other means. That's because it is offered as a RaaS, Ransomware-as-a-service, meaning that the developers of this virus are not the only ones distributing the malware.
According to NoVirus.uk researchers, the affiliates can render their own means of distribution to infect PCs and then collect commissions for every paid ransom fee. The other means that can be used for spreading this tool:
- the sender - billy73@3189.com (though it can differ)
- Subject line - "Your new photo?"
- Body text - a winking emoji
- Attachment - IMG123101.jpg
- Links embedded into spam emails
- Software vulnerabilities and exploit kits
- Pirated software installers
- Keygens, software cracks
- Fake Flash Player (or similar) updates
- Freeware bundles shared on shady websites
- Poorly protected Remote Desktop connections, etc.
The Avaddon ransomware note
Your network has been infected by Avaddon
All your documents, photos, databases and other important files have been encrypted and you are not able to decrypt it by yourself. But don't worry, we can help you to restore all your files!
The only way to restore your files is to buy our special software - Avaddon General Decryptor. Only we can give you this software and only we can restore your files!
You can get more information on our page, which is located in a Tor hidden network.
How to get to our page
Download Tor browser - hxxps://www.torproject.org/
Install Tor browser
Open link in Tor browser - avaddonbotrxmuyl.onion
Follow the instructions on this page
Your ID:
-
DO NOT TRY TO RECOVER FILES YOURSELF!
DO NOT MODIFY ENCRYPTED FILES!
OTHERWISE, YOU MAY LOSE ALL YOUR FILES FOREVER!
How to remove Avaddon ransomware
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 Avaddon ransomware 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
Avaddon ransomware encrypts everything it can reach, including drives and shares you connect later. Cut the network first: cable out, or Wi-Fi off from the taskbar.
Then unplug every USB stick and backup disk and pause cloud sync, so the encrypted versions do not replace your online copies. Do not reconnect any of them until the ransomware is removed from the Windows 11 or Windows 10 PC.
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
Copy
readme.htmland one or two files ending in.avdnto a USB stick, and leave the originals where they are.From another device, upload the note and a sample file to ID Ransomware or No More Ransom's Crypto Sheriff, which name the family from the note, the extension and the file structure.
Write down the contact address and your personal ID from the note, because a decryptor or the police may ask for them.
Warning: Never contact the attackers from the infected Windows 11 or Windows 10 PC.
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
For Avaddon ransomware, no free decryptor is known (checked 6 October 2026). Search the family name in the No More Ransom decryption tools list and in the free decryptors of Emsisoft, Avast and Kaspersky, because new tools appear years after an attack.
Important: Keep the encrypted files even if nothing works today, and do not pay before every free option is ruled out: payment does not guarantee a working key.
Decryptors run on Windows 11 and Windows 10, but only after the ransomware itself is removed.
Full procedure with screenshots: Ransomware: first steps, finding a decryptor and recovering files
Step 4: Remove the ransomware before you restore or decrypt
Restoring or decrypting files while Avaddon ransomware still runs lets it encrypt them again. Run a Full scan in Windows Security > Virus & threat protection > Scan options, then the Microsoft Defender Antivirus (offline scan).
If the ransomware blocks Windows Security, start Safe Mode with Networking and scan from there. Some families install a password stealer as well, so let both scans finish on Windows 11 or 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
Open Command Prompt as administrator and run
vssadmin list shadows. If it lists copies dated before the attack, right-click a folder with encrypted files in File Explorer, choose Properties > Previous Versions, and open or restore a version from before that date.ShadowExplorer, a free tool, shows the same copies when the tab is empty or hidden. Most current families delete shadow copies, so an empty list is normal, but the check takes two minutes on Windows 11 or Windows 10.
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
Restore from an external backup, File History or OneDrive's version history, choosing a date before the attack. Connect the backup drive only after the scans are clean, or the ransomware encrypts it too.
If there is no backup, file recovery software can sometimes find the deleted originals, because some ransomware writes an encrypted copy and deletes the original file.
Stop writing to the drive and try recovery on Windows 11 or Windows 10 before new files overwrite the space.
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 Sep 2020 · not reviewed since
Avaddon virus ransomware removal and .avdn file recovery
As we have already mentioned in the first part of this article, the Avaddon ransomware removal can be initiated in one way only - using a professional security program that has the latest virus database, powerful scanner, and virus removal possibilities. Our recommended programs are and , but you can use any application of your preferences.
If, however, you cannot remove Avaddon virus from the system because it infringes the AV engine and keeps it disabled all the time, restart Windows OS and boot it into Safe Mode with Networking. This way, all malicious processes will be disabled and you will be able to start the security scan.
Once the ransomware is removed, you can start thinking about the recovery of the .avdn files. As pointed out by cybersecurity experts, there's no free decryptor for this virus. Therefore, you should select if you are going to pay the ransom (not recommended), use backups, or apply alternative data recovery methods listed below.
[GI=method-1]Safe Mode environment is required for a successful ransomware elimination.
[GI=method-2]If you cannot enable Safe Mode for some reason, you can try to get rid of malicious ransomware files by enabling the System Restore point that has been created before the Avaddon ransomware attack.
The methods that can be used to unlock .avdn virus files
This third-party software can ransomware victims retrieve at least some of the encoded files for no charge.
ShadowExplorer may be of use for those who cannot rename .avdn files without paying the ransom
Unfortunately, there's no free Avaddon decryptor launched
Even though there's no decryptor for this malicious virus, do not rush to pay the ransom. Make cold copies of the encrypted files and upload the sample of the virus to the websites owned by ransomware researchers.
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.
Protect the files you restore
Restore only after the scans are clean and the PC no longer shows files that end in .avdn and no longer open; otherwise the restored copies can be damaged again.
Then build a backup that survives the next infection:
- one copy in the cloud with version history
- one on an external drive that is disconnected between backups
- the working copy on the PC
Version history matters because a backup that syncs damaged files overwrites the good ones.
How to do this with the tools built into Windows: the 3-2-1 backup rule on Windows.
Protect your privacy - employ a VPN
There are several ways how to make your online time more private - you can access an incognito tab.
However, there is no secret that even in this mode, you are tracked for advertising purposes. There is a way to add an extra layer of protection and create a completely anonymous web browsing practice with the help of VPN. This software reroutes traffic through different servers, thus leaving your IP address and geolocation in disguise.
Besides, it is based on a strict no-log policy, meaning that no data will be recorded, leaked, and available for both first and third parties. The combination of a secure web browser and VPN will let you browse the Internet without a feeling of being spied or targeted by criminals.
No backups? No problem. Use a data recovery tool
If you wonder how data loss can occur, you should not look any further for answers - human errors, malware attacks, hardware failures, power cuts, natural disasters, or even simple negligence.
In some cases, lost files are extremely important, and many straight out panic when such an unfortunate course of events happen. Due to this, you should always ensure that you prepare proper data backups on a regular basis.
If you were caught by surprise and did not have any backups to restore your files from, not everything is lost. is one of the leading file recovery solutions you can find on the market - it is likely to restore even lost emails or data located on an external device.
Questions about Avaddon ransomware
How do I open .avdn files?
You cannot open them by renaming or with another program, because the content of files ending in .avdn has been encrypted. The only ways back are a working decryptor for the family, or clean copies from elsewhere:
- OneDrive versions
- File History
- an offline backup drive
- Previous Versions if the ransomware did not delete them
Identify the family first by uploading the ransom note and one encrypted file to ID Ransomware or No More Ransom. Avoid websites and programs that promise to open any encrypted file; they do not work and some are scams.
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 Avaddon ransomware steal my files or passwords?
We do not know yet. Nothing published so far shows data theft by Avaddon ransomware, but the only confirmed sign is files that end in .avdn 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 there a free Avaddon ransomware decryptor?
We last checked on 6 October 2026, and for Avaddon ransomware no free decryptor is known. We check No More Ransom, which collects free tools from police and security companies, and the decryptor pages of the major antivirus vendors. A working decryptor exists only when the encryption has a flaw or the keys were leaked or seized.
Ignore sites and videos that offer a "Avaddon ransomware decryptor" for download or for a fee: these are usually scams or malware. Real decryptors are free and come from known security companies or law enforcement. Keep the encrypted files in case a tool appears later.
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.
How did Avaddon ransomware get on my computer?
The way Avaddon ransomware 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 .avdn 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 Avaddon ransomware 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 readme.html?
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. readme.html 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 .avdn 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 .avdn 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 Avaddon ransomware?
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 Avaddon ransomware, 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
- Twitter: GrujaRS @GrujaRS (read October 6, 2026)
- VirusTotal: emp27472466.exe (read October 6, 2026)
- Appriver: Phorphiex/Trik Botnet Campaign Leads to Multiple Infections - Ransomware, Banking Trojan, & CryptoJacking (read October 6, 2026)
- CISA: StopRansomware (read October 6, 2026)
- No More Ransom (read October 6, 2026)