Remove Oled ransomware from a computer

Also Known As: Oled virus
Distribution: Low
Damage level: Severe

Oled ransomware removal instructions

What is Oled?

Oled ransomware was discovered by S!Ri. Typically, software of this type encrypts files, renames them and creates a ransom note. Oled renames encrypted files by adding victim's ID and developer's email address and appending the ".oled" extension to their filenames. For instance, it renames "1.jpg" to "1.jpg.[EF7BE7BC].[].oled", and so on. Also, Oled creates a ransom note, a text file named "readme-warning.txt".

As stated in the ransom note ("readme-warning.txt"), victims have to pay for a decryption tool in Bitcoins. However, price of this tool is not mentioned. In order to get more details (like price of a decryption tool and how to pay for it) victims have to write an email to, it can contain up to two unimportant files as well. According to Oled's developers, they will decrypt those files and send them back. They offer free decryption as a proof that they have a tool that can decrypt files encrypted by Oled ransomware. Also, victims are warned no to try to modify any of encrypted files or use other decryption tools because may cause irreversible data loss. Typically, cyber criminals behind a particular ransomware are the only ones who have tools that can decrypt files encrypted by it. Unfortunately, that is the case with Oled too - there are no free tools that could be capable of decrypting files encrypted by this ransomware, at least not at the moment. As a rule, the only one way to recover files without having to use tools that can be purchased from cyber criminals is to restore them from a created backup. It is worth mentioning that files remain encrypted even after removing ransomware from the operating system. Its removal only prevents it from causing further encryptions. We strongly recommend to recover files using a backup (if there is one created) and not to pay cyber criminals for a decryption tool because they may not send it. Quite often victims of ransomware who trust cyber criminals (pay them a ransom) get scammed.

Screenshot of a message encouraging users to pay a ransom to decrypt their compromised data:

Oled decrypt instructions (readme-warning.txt)

More examples of software that is classified as ransomware are Adair, Jenkins and Afrodita. In most cases programs of this type are designed to prevent victims from accessing their data by encrypting them and to provide instructions (create ransom notes) on how to pay for a decryption tool and/or key. Usually the main variables are size of a ransom and cryptographic algorithm (symmetric or asymmetric) that ransomware uses to lock files. Unfortunately, most programs of this type encrypt files with strong encryption algorithms and it is impossible to decrypt files without the right tools unless ransomware is still in a development state (has some vulnerabilities). However, it does not happen often and that is why it is important to always have data backed up and keep it on a remote server and/or unplugged storage device.

How did ransomware infect my computer?

Typically, cyber criminals distribute various malware through spam campaigns, Trojans, untrustworthy software download channels, fake software updaters and unofficial activation tools. Quite often they spread malware by sending emails that contain web links that are designed to download malicious files or malicious attachments. In most cases they attach files such as MS Office documents, executable (.exe) files, archive files like RAR, PDF documents, JavaScript files, and other files. Their main purpose is trick recipients into opening (executing) a malicious file that, once opened, will install malicious software. Another way to proliferate various malware is through Trojans. When installed, Trojans often install other malicious/they are designed to cause chain infections. Various untrustworthy file and software download sources can be used to spread malware too. Some examples of such sources are Peer-to-Peer networks (e.g., torrent clients, eMule), freeware download or file hosting pages, third party downloaders, etc. Malicious software is being proliferated through them by uploading malicious files that are disguised as legitimate, regular, harmless. However, systems get infected with malware only when people open malicious files downloaded through those sources. Fake software updaters usually either exploit bugs, flaws of some outdated software or install malicious programs instead of updates. Unofficial activation tools supposed to activate licensed (paid) programs for free. Nevertheless, it is quite common for them to be designed to install malicious software.

Threat Summary:
Name Oled virus
Threat Type Ransomware, Crypto Virus, Files locker
Encrypted Files Extension .oled
Ransom Demanding Message readme-warning.txt
Cyber Criminal Contact
Detection Names Avast (Win32:Trojan-gen), AVG (Win32:Trojan-gen), ESET-NOD32 (A Variant Of Win32/Filecoder.Phobos.E), Kaspersky (Trojan-Ransom.Win32.Cryptor.czp), 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.
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Free scanner checks if your computer is infected. To remove malware, you have to purchase the full version of Spyhunter.

How to protect yourself from ransomware infections?

It is recommended to not to download and install any software through third party downloaders, installers, unofficial pages and other sources that are mentioned in the paragraph above. It should be done by using only official ages and direct download links. Furthermore, installed software and operating system must be updated via implemented functions and/or tools that are designed by official developers. Attachments (or web links) in received irrelevant emails that are sent from unknown, suspicious addresses should not be opened. No software or operating system should be activated through software unofficial activation tools. It is not legal to bypass activation of software this way and it often leads to installation of high-risk malware. One more important thing is to regularly scan a computer for threats with a reputable anti-spyware or antivirus software and always keep it up do date. If your computer is already infected with Oled, we recommend running a scan with Spyhunter for Windows to automatically eliminate this ransomware.

Text presented in Oled ransomware's text file ("readme-warning.txt"):

::: Greetings :::

Little FAQ:
Q: Whats Happen?
A: Your files have been encrypted and now have the "OLED" extension. The file structure was not damaged,
we did everything possible so that this could not happen.

Q: How to recover files?
A: If you wish to decrypt your files you will need to pay in bitcoins.

Q: What about guarantees?
A: Its just a business. We absolutely do not care about you and your deals, except getting benefits. If we do not do our work and
liabilities - nobody will cooperate with us. Its not in our interests.
To check the ability of returning files, you can send to us any 2 files with SIMPLE extensions(jpg,xls,doc, etc... not databases!)
and low sizes(max 1 mb), we will decrypt them and send back to you. That is our guarantee.

Q: How to contact with you?
A: You can write us to our mailbox:

Q: How will the decryption process proceed after payment?
A: After payment we will send to you our scanner-decoder program and detailed instructions for use. With this program you will
be able to decrypt all your encrypted files.

Q: If I donít want to pay bad people like you?
A: If you will not cooperate with our service - for us, its does not matter. But you will lose your time and data, cause only
we have the private key. In practice - time is much more valuable than money.

DON'T try to change encrypted files by yourself!
If you will try to use any third party software for restoring your data or antivirus solutions - please make a backup for all
encrypted files! Any changes in encrypted files may entail damage of the private key and, as result, the loss all data.

Screenshot of files encrypted by Oled (".oled" extension):

Files encrypted by Oled ransomware (.oled extension)

Oled 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:
▼ DOWNLOAD Spyhunter By downloading any software listed on this website you agree to our Privacy Policy and Terms of Use. Free scanner checks if your computer is infected. To remove malware, you have to purchase the full version of Spyhunter.

Quick menu:

Step 1

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.

Safe Mode with Networking

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.

Windows 8 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.

windows 10 safe mode with networking

Video showing how to start Windows 10 in "Safe Mode with Networking":

Step 2

Log in to the account infected with the Oled 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.

Boot your computer in Safe Mode with Command Prompt

2. When Command Prompt mode loads, enter the following line: cd restore and press ENTER.

system restore using command prompt type cd restore

3. Next, type this line: rstrui.exe and press ENTER.

system restore using command prompt rstrui.exe

4. In the opened window, click "Next".

restore system files and settings

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 Oled ransomware virus infiltrating your PC).

select a restore point

6. In the opened window, click "Yes".

run system restore

7. After restoring your computer to a previous date, download and scan your PC with recommended malware removal software to eliminate any remaining Oled 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 Oled 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.

Restoring files encrypted by CryptoDefense

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 regain control of the files encrypted by Oled, you can also try using a program called Shadow Explorer. More information on how to use this program is available here.

shadow explorer screenshot

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 Oled 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.

Controll Folder Access

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:

hitmanproalert ransomware prevention application

Malwarebytes Anti-Ransomware Beta uses advanced proactive technology that monitors ransomware activity and terminates it immediately - before reaching users' files:

malwarebytes anti-ransomware

  • 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 Oled ransomware:

About the author:

Tomas Meskauskas

Tomas Meskauskas - expert security researcher, professional malware analyst.

I am passionate about computer security and technology. I have an experience of over 10 years working in various companies related to computer technical issue solving and Internet security. I have been working as an author and editor for since 2010. Follow me on Twitter and LinkedIn to stay informed about the latest online security threats. Contact Tomas Meskauskas.

PCrisk security portal is brought by a company RCS LT. Joined forces of security researchers help educate computer users about the latest online security threats. More information about the company RCS LT.

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Malware activity

Global malware activity level today:

Medium threat activity

Increased attack rate of infections detected within the last 24 hours.

QR Code
Oled virus QR code
A QR code (Quick Response Code) is a machine-readable code which stores URLs and other information. This code can be read using a camera on a smartphone or a tablet. Scan this QR code to have an easy access removal guide of Oled virus on your mobile device.
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