Pysa ransomware removal instructions
What is Pysa?
Pysa is a new variant of Mespinoza ransomware, which encrypts files and appends the ".pysa" extension to filenames. For example, "1.jpg" becomes "1.jpg.pysa", and so on. It also creates a text file named "Readme.README.txt" containing a ransom message with instructions about how to recover files. Like most programs of this type, Pysa encrypts files with a strong encryption algorithm. Therefore, victims cannot regain access to their files unless they decrypt them with a specific decryption tool and/or key.
To restore access to data, victims are urged to contact Pysa's developers via the email@example.com or firstname.lastname@example.org email address. The cyber criminals then send instructions about how to pay the ransom. Victims are permitted to send two encrypted files, which the criminals offer to decrypt free of charge. Typically, cyber criminals offer this test decryption as 'proof' that they have tools that can decrypt compromised files. Note that only the cyber criminals who developed the ransomware (in this case, Pysa) have valid tools. Regardless, they cannot be trusted - people who trust cyber criminals and pay ransoms are often scammed. They do not receive decryption tools/keys as they were promised. Typically, the only free and safe way to recover files is to restore them from a backup. Note that even if ransomware is uninstalled from the operating system, all files remain encrypted. Removal simply prevents it from causing further encryption.
Screenshot of a message encouraging users to pay a ransom to decrypt their compromised data:
Pysa is just one of many ransomware-type programs. Some other examples are Bobelectron, Nbes and DMR64. Typically, they are designed to prevent victims from accessing their data by encryption with a strong cryptographic algorithm (symmetric or asymmetric) and create and/or display a ransom message. Generally only the cyber criminals have tools that can decrypt files encrypted by their ransomware. Therefore, it is impossible decrypt files, unless the ransomware is not finished (contains bugs, flaws, and so on). To avoid data and financial loss caused by programs of this type, have data backed up and keep it on a remote server (such as Cloud) and/or unplugged storage device.
How did ransomware infect my computer?
|Threat Type||Ransomware, Crypto Virus, Files locker.|
|Encrypted Files Extension||.pysa|
|Ransom Demanding Message||Readme.README.txt|
|Cyber Criminal Contactemail@example.com, firstname.lastname@example.org, email@example.com, firstname.lastname@example.org|
|Detection Names||Avast (Win32:Trojan-gen), BitDefender (Gen:Variant.Ransom.Dee.1), ESET-NOD32 (A Variant Of Win32/Filecoder.NYO), Kaspersky (Trojan.Win32.Zudochka.dtr), Full List Of Detections (VirusTotal)|
|Symptoms||Cannot open files stored on your computer, previously functional files now have a different extension (for example, my.docx.locked). A ransom demand message is displayed on your desktop. Cyber criminals demand payment of a ransom (usually in bitcoins) to unlock your files.|
|Distribution methods||Infected email attachments (macros), torrent websites, malicious ads.|
|Damage||All files are encrypted and cannot be opened without paying a ransom. Additional password-stealing trojans and malware infections can be installed together with a ransomware infection.|
To eliminate malware infections our security researchers recommend scanning your computer with Spyhunter.
How to protect yourself from ransomware infections
Do not download or install software through third party downloaders, installers or the other dubious channels mentioned above. Use official and trustworthy websites, and direct download links. Installed software or operating system should be updated using implemented functions and/or tools that are designed by official software developers. Attachments or web links in irrelevant emails that are sent from unknown, suspicious addresses should not be opened. Cyber criminals often disguise their emails and attachments as important, official, and so on. Do not activate software or operating systems through 'cracking'/unofficial activation tools. This is illegal and they often lead to installation of malware. Regularly scan the operating system for threats with reputable anti-spyware or antivirus software and ensure that it is up to date. If your computer is already infected with Pysa, we recommend running a scan with Spyhunter for Windows to automatically eliminate this ransomware.
Text presented in Pysa ransomware text file ("Readme.README.txt"):
Every byte on any types of your devices was encrypted.
Don't try to use backups because it were encrypted too.
To get all your data back contact us:
Q: How can I make sure you don't fooling me?
A: You can send us 2 files(max 2mb).
Q: What to do to get all data back?
A: Don't restart the computer, don't move files and write us.
Q: What to tell my boss?
A: Protect Your System Amigo.
Screenshot of files encrypted by Pysa (".pysa" extension):
Update March 19, 2020 - It has been observed that Pysa ransomware was primarily used to target large companies; however, recently it has begun targeting networks of local government authorities (notably, France). It is still unclear exactly how this malware is infecting its victims. The evidence left behind suggests several potential scenarios, more information on which can be found in an article by Catalin Cimpanu on zdnet.com.
Pysa ransomware removal:
Instant automatic malware removal:
Manual threat removal might be a lengthy and complicated process that requires advanced computer skills. Spyhunter is a professional automatic malware removal tool that is recommended to get rid of malware. Download it by clicking the button below:
- What is Pysa?
- STEP 1. Pysa virus removal using safe mode with networking.
- STEP 2. Pysa ransomware removal using System Restore.
Windows XP and Windows 7 users: Start your computer in Safe Mode. Click Start, click Shut Down, click Restart, click OK. During your computer start process, press the F8 key on your keyboard multiple times until you see the Windows Advanced Option menu, and then select Safe Mode with Networking from the list.
Video showing how to start Windows 7 in "Safe Mode with Networking":
Windows 8 users: Start Windows 8 is Safe Mode with Networking - Go to Windows 8 Start Screen, type Advanced, in the search results select Settings. Click Advanced startup options, in the opened "General PC Settings" window, select Advanced startup. Click the "Restart now" button. Your computer will now restart into the "Advanced Startup options menu". Click the "Troubleshoot" button, and then click the "Advanced options" button. In the advanced option screen, click "Startup settings". Click the "Restart" button. Your PC will restart into the Startup Settings screen. Press F5 to boot in Safe Mode with Networking.
Video showing how to start Windows 8 in "Safe Mode with Networking":
Windows 10 users: Click the Windows logo and select the Power icon. In the opened menu click "Restart" while holding "Shift" button on your keyboard. In the "choose an option" window click on the "Troubleshoot", next select "Advanced options". In the advanced options menu select "Startup Settings" and click on the "Restart" button. In the following window you should click the "F5" button on your keyboard. This will restart your operating system in safe mode with networking.
Video showing how to start Windows 10 in "Safe Mode with Networking":
Log in to the account infected with the Pysa virus. Start your Internet browser and download a legitimate anti-spyware program. Update the anti-spyware software and start a full system scan. Remove all entries detected.
If you cannot start your computer in Safe Mode with Networking, try performing a System Restore.
Video showing how to remove ransomware virus using "Safe Mode with Command Prompt" and "System Restore":
1. During your computer start process, press the F8 key on your keyboard multiple times until the Windows Advanced Options menu appears, and then select Safe Mode with Command Prompt from the list and press ENTER.
2. When Command Prompt mode loads, enter the following line: cd restore and press ENTER.
3. Next, type this line: rstrui.exe and press ENTER.
4. In the opened window, click "Next".
5. Select one of the available Restore Points and click "Next" (this will restore your computer system to an earlier time and date, prior to the Pysa ransomware virus infiltrating your PC).
6. In the opened window, click "Yes".
7. After restoring your computer to a previous date, download and scan your PC with recommended malware removal software to eliminate any remaining Pysa ransomware files.
To restore individual files encrypted by this ransomware, try using Windows Previous Versions feature. This method is only effective if the System Restore function was enabled on an infected operating system. Note that some variants of Pysa are known to remove Shadow Volume Copies of the files, so this method may not work on all computers.
To restore a file, right-click over it, go into Properties, and select the Previous Versions tab. If the relevant file has a Restore Point, select it and click the "Restore" button.
If you cannot start your computer in Safe Mode with Networking (or with Command Prompt), boot your computer using a rescue disk. Some variants of ransomware disable Safe Mode making its removal complicated. For this step, you require access to another computer.
To protect your computer from file encryption ransomware such as this, use reputable antivirus and anti-spyware programs. As an extra protection method, you can use programs called HitmanPro.Alert and EasySync CryptoMonitor, which artificially implant group policy objects into the registry to block rogue programs such as Pysa ransomware.
Note that Windows 10 Fall Creators Update includes a "Controlled Folder Access" feature that blocks ransomware attempts to encrypt your files. By default, this feature automatically protects files stored in the Documents, Pictures, Videos, Music, Favorites, and Desktop folders.
Windows 10 users should install this update to protect their data from ransomware attacks. Here is more information on how to get this update and add an additional protection layer from ransomware infections.
HitmanPro.Alert CryptoGuard - detects encryption of files and neutralises any attempts without need for user-intervention:
Malwarebytes Anti-Ransomware Beta uses advanced proactive technology that monitors ransomware activity and terminates it immediately - before reaching users' files:
- The best way to avoid damage from ransomware infections is to maintain regular up-to-date backups. More information on online backup solutions and data recovery software Here.
Other tools known to remove Pysa ransomware: