Remove Oled ransomware from your 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 ransom messages. Oled renames encrypted files by adding the victim's ID and developer's email address, and appending the ".oled" extension to filenames. For example, it might rename "1.jpg" to a filename such as "1.jpg.[EF7BE7BC].[oled@airmail.cc].oled", and so on. Oled also creates a ransom message within a text file named "readme-warning.txt".

The ransom message ("readme-warning.txt") states that victims must pay for a decryption tool in Bitcoins, however, the cost of this is not mentioned. To get more details (such as cost of decryption tool and how to pay), victims are urged to send an email to oled@airmail.cc. The message can contain up to two insignificant files. According to Oled's developers, they will decrypt these files and return them. They offer this free decryption as 'proof' that they have a tool that can decrypt files compromised by Oled ransomware. Victims are warned no to try to modify encrypted files or use other decryption tools, since this might cause irreversible data loss. Typically, only the cyber criminals behind specific ransomware have tools that can recover the encrypted files. Unfortunately, this is also the case with Oled - there are currently no free tools capable of decrypting files affected by this ransomware. Generally, the only one way to recover files without having to use tools purchased from cyber criminals is to restore them from a backup created previously. Note that files remain encrypted even after removing ransomware from the operating system - removal simply prevents it from causing further encryption. We strongly recommend that you recover files using a backup (if one has been created). Do not pay cyber criminals for any decryption tools, since they often send nothing. Victims of ransomware, who trust cyber criminals and pay the ransoms, are commonly scammed.

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

Oled decrypt instructions (readme-warning.txt)

Other examples of software classified as ransomware include Adair, Jenkins and Afrodita. In most cases, these programs prevent victims from accessing their data by encryption and then provide instructions (via ransom messages) detailing how to pay for decryption tools and/or keys. Main variables are usually size of 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 - it is impossible to recover files without the specific tools, unless, in rare cases, the ransomware is still in development (contains vulnerabilities). Therefore, maintain data backups on a remote server and/or unplugged storage device.

How did ransomware infect my computer?

Typically, cyber criminals distribute malware through spam campaigns, Trojans, untrustworthy software download channels, fake software updaters and unofficial activation tools. They proliferate malware by sending emails that contain web links, which download malicious files or attachments. In most cases, they attach MS Office documents, executables (.exe), archives such as RAR, PDF documents, JavaScript files, and other files. Their main purpose is trick recipients into opening (executing) a malicious file. Once opened, this installs malicious software. Malware is also spread through through Trojans. When installed, Trojans often install other malicious software, thereby causing chain infections. Various untrustworthy file and software download sources are used to proliferate malware. Some examples are Peer-to-Peer networks (e.g., torrent clients, eMule), freeware download or file hosting pages, third party downloaders, etc. Malicious software is proliferated through them by uploading malicious files disguised as legitimate, regular, harmless, etc. Note that systems become infected with malware only when people open malicious files downloaded through these sources. Fake software updaters can exploit bugs/flaws of outdated software or install malicious programs rather than updates. Unofficial activation tools supposedly activate licensed (paid) programs free of charge, however, the might install malicious software.

Threat Summary:
Name Oled virus
Threat Type Ransomware, Crypto Virus, Files locker.
Encrypted Files Extension .oled
Ransom Demand Message readme-warning.txt
Cyber Criminal Contact oled@airmail.cc
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.
Malware Removal (Windows)

To eliminate possible malware infections, scan your computer with legitimate antivirus software. Our security researchers recommend using Malwarebytes.
▼ Download Malwarebytes
To use full-featured product, you have to purchase a license for Malwarebytes. 14 days free trial available.

How to protect yourself from ransomware infections

Do not download or install software through third party downloaders, installers, unofficial pages or other the sources mentioned above. Use only official web pages and direct download links. Installed software and operating systems must be updated via implemented functions/tools that are designed by official developers. Attachments or web links received via irrelevant emails sent from unknown, suspicious addresses should not be opened. Do not activate software or operating systems through unofficial activation tools. It is illegal to bypass activation of software in this way and it often leads to installation of high-risk malware. Regularly scan the computer for threats with reputable anti-spyware or antivirus software and keep it up do date. If your computer is already infected with Oled, we recommend running a scan with Malwarebytes for Windows to automatically eliminate this ransomware.

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

::: Greetings :::


Little FAQ:
.1.
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.

.2.
Q: How to recover files?
A: If you wish to decrypt your files you will need to pay in bitcoins.

.3.
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.

.4.
Q: How to contact with you?
A: You can write us to our mailbox: oled@airmail.cc

.5.
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.

.6.
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.

:::BEWARE:::
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)

Update May 11, 2020 - Cyber criminals have recently released an updated version of Oled ransomware which drops a different ransom note and appends a different ransom note - random string.

Screenshot of the updated Oled ransomware's text file ("readme-warning.txt"):

Updated Oled ransomware ransom note

Text presented within:

Dear user! Your computer is encrypted! We demand a ransom!
Decryption service is paid !!!! PAYMENT FOR BITCOIN !!!
Also from your servers files, documents, databases SQL, PDF were uploaded to our cloud storage
After we agree, you will receive a decryption program, valuable advice in order not to fall into this situation in the future, as well as all your files on our server will be deleted.
Otherwise, they will fall into the open access of the Internet!
Use any third party software for restoring your data or antivirus solutions will result in a loose of data.
Please be sure that we will find common languge. We will restore all the data and give you recommedations how to configure the protection of your server.

COMMUNICATION METHOD:
To decrypt your computer, you need to download the TOR browser at hxxps://www.torproject.org/download/
Install it and visit our website for further action hxxp://paymen45oxzpnouz.onion/E38D7F03

Screenshot of the updated Oled ransomware's website in Tor network:

Updated Oled ransomware website

Text presented within:

What happened
Your local network has been hacked

Your documents, photos, databases and other important files are encrypted

To decrypt your files you need to contact us via chat. We demand a ransom!

You can do it right now. Use chat bellow. But remember that you do not have much time
Contact with support
-

Enter your ID code to start
Your ID
Information
Buy Bitcoins with Bank Account or Bank Transfer
Coinmama, Korbit, Coinfloor, Coinfinity, BitPanda, BTCDirect, Paymium, Bity, CoinCorner, HappyCoins, Coinbase
, * Don't use Coinbase if you're in USA, Bitfinex, Poloniex

Buy Bitcoin with Credit/Debit Card
CEX.io, CoinMama, Huobi, Bittylicious, BitPanda, CoinCafe, Coinhouse, Safello

Buy Bitcoins with Cash or Cash Deposit
LocalBitcoins, BitQuick, Wall of Coins, LibertyX, Bitit, Coin ATM Radar

Screenshot of files encrypted by the updated Oled ransomware (".KJHslgjkjdfg" extension):

Files encrypted by the updated Oled ransomware

Oled ransomware removal:

Instant automatic malware removal: Manual threat removal might be a lengthy and complicated process that requires advanced computer skills. Malwarebytes is a professional automatic malware removal tool that is recommended to get rid of malware. Download it by clicking the button below:
▼ DOWNLOAD Malwarebytes By downloading any software listed on this website you agree to our Privacy Policy and Terms of Use. To use full-featured product, you have to purchase a license for Malwarebytes. 14 days free trial available.

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 pcrisk.com 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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Removal Instructions in other languages
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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