.CryEye (DoubleLocker) Files Virus – How to Remove + Restore Data

.CryEye (DoubleLocker) Files Virus – How to Remove + Restore Data

This article aims to show you how to erase CryEye ransomware from your Android device and how to restore files that have been encrypted by this virus.

Android ransomware is gaining popularity with newer and newer variants continuing to be detected. One such virus is the CryEye ransomware which encrypts the files on your Android device and adds the .cryeye file extension to them. The is most likely one of the first more serious ransomware virus which we have detected to use the AES cipher effectively. CryEye ransomware demands a ransom payment of 0.0130 BTC to cyber-criminals and the payment must be made in approximately 24 hours else the cyber-criminals threaten to delete the decryption keys. If you Android smartphone or tablet has been infected by CryEye ransomware we strongly recommend that you immediately read the following article to learn how to remove this ransomware and try to recover your files without paying BitCoins to the cyber-criminals.

Threat Summary

NameCryEye Ransomware
TypeAndroid Ransomware, Cryptovirus
Short DescriptionInstalles itself on your android device and locks you out of it, encrypting files and demands 0.0130 BTC ransom payoff to decrypt them for you.
SymptomsThe virus adds a .cryeye file extension to the encrypted files and in addition to this locks you out of your phone by changing your PIN code.
Distribution MethodMalicious web links and smartphone redirects. Malicious apps installed from Google Play.
Detection Tool See If Your System Has Been Affected by CryEye Ransomware


Malware Removal Tool

User ExperienceJoin Our Forum to Discuss CryEye Ransomware.
Data Recovery ToolWindows Data Recovery by Stellar Phoenix Notice! This product scans your drive sectors to recover lost files and it may not recover 100% of the encrypted files, but only few of them, depending on the situation and whether or not you have reformatted your drive.

CryEye Ransomware Spread

In order to infect victims, this ransowmare virus may advertise suspicious apps via websites, via adware that has previously affected your Android, or most ofte via apps downloaded from Google PlayStore. Such apps have also been reported to cause numerous issues since in Google PlayStore there are too many apps to be thoroughly checked. And while there are those applications that are legitimate, they may establish connection to a malicious website, after you install them and give them permissions to do just that. After doing so, you lose control over your Android device. One way to protect yourself at least partially from those infection methods is to use a VPN service which blocks apps, like DNS66, for example.

Related Story: How to Fully Block All Ads on Your Android Device Using DNS66 (2017)

CryEye Ransomware – More Information

DoubleLocker or CryEye ransomware is an Android ranosomware which locks down the devices of victims. This virus has many capabilities, the primary of which is to gain permissions on your Android device.

As soon as the device is infected, the malware immediately modifies the .apk file on it, responsible for the PIN code and changes the default PIN, thus locking you out of your own smartphone. The lockscreen is replaced with the following screen, resulting in this message to appear:

CryEye Ransomware – Encryption

When it comes to the encryption process of CryEye ransomware, the virus aims to perform multiple different types of activities on the victims’ computers. The main of those activities is to locate the files. To do this, the virus scans for files with file extensions, associated with the following file types:

  • Documents.
  • Videos.
  • Audio files.
  • Pictures.
  • Archives.

In addition to this, the ransomware virus is also the type of infection that changes the file extension to .cryeye. This makes the files appear like the following example:


The files are also encrypted via AES-256 encryption algorithm, resulting in them becoming no longer able to be opened. An assymetric key is generated which is used for the decryption of the files and it is known only to the cyber-criminals.

Remove CryEye Ransomware and Restore Your Files

If you want to remove this virus, we recommend you to follow the removal instructions down below and choose the model of your smartphone. In addition to this, we also recommend you to plug it on your computer and use the alternative methods below in order to attempt and recover the files that have been encrypted with the .cryeye file extension. Be advised to always perform a backup before the actual removal.

1. Back up the data on your device

Back up the data on your phone

CAUTION! Before attempting any removals and drive formatting on your device, you should know that it is essential to save all your important contacts and files from your phone. There are several methods to backup your files:

Method I: Using online backup software or a memory card if the device supports it.

Method II: Connecting to another device and copying the data directly.

This is a bit risky option since the device may have malware on it. This is why, first you need to enter the device’s Safe Mode:

For RAZR Droid Devices:

1.Switch off the smartphone and remove the battery for a few seconds then plug it back in.

2.Switch the phone on.

3.You should see a Motorola Dual Core screen appearing. You should press and hold the Volume up, and Volume Down keys on the side of the smartphone. Hold them until the lock screen shows up with ‘Safe Mode’ written in the lower corner.

For HTC Devices:

1.Switch off the smartphone and remove the battery for a few seconds then plug it back in.

2.Turn on your phone while simultaneously holding down the Menu Button. When it starts, keep pressing the Menu Button until you see ‘Safe Mode’ menu appearing in the lower corner.

For Nexus devices:

1.Switch off the smartphone and remove the battery for a few seconds then plug it back in.
2.Turn on the phone.
3.When the welcome Logo Screen shows up, hold the trackball while pressing it until a lock screen shows up, or you see ‘Safe Mode’ written in the bottom corner.

For Other Motorola Devices:

1.Switch off the smartphone and remove the battery for a few seconds then plug it back in.
2.Hold down the Menu Button after you press it while turning on the phone. When it boots, hold the button down upon seeing the lock screen or feeling the phone vibrate.

For Moto G Devices:
1.Press the Power Button and hold it on until the list with options pop-up.
2.Hold the Power off button and wait for a ‘Reboot to Safe Mode’ option to appear.
3.Tap it and let the phone reset.

For Samsung Galaxy Devices:

1.While the device is on, hold down the Power Button and wait for the Options List.
2.Wait for a ‘Restart to Safe Mode’ option to appear.
3.Choose this setting. The device will restart.

For Apple Devices:

1. While your device is locked, hold down the Power Button and the Home Button until you see a white Apple logo.
2. Once you see the logo, let go from those buttons and start holding the Volume Up button. (Give it a little time to boot up)
3. Now the phone should boot in Safe Mode without any third-parties running.

And now it is time to proceed by doing the actual backup:

Apple iOS

1. Connect your device and select it in iTunes.
2. From the Backups section go to Manually Back Up and Restore and tap on Back Up Now.


1. Connect your device via USB to a computer and select Use as a Media Device. You may also see use as file transfer option.
2. Go to your phone from My Computer and copy all the files you need.
3. If the phone has an option to install its drivers onto your computer, select it and install them since this will simplify the process of copying your contact list on your computer.

2. Hard-reset your device and remove CryEye Ransomware

Hard-Reset Your Smartphone

For Apple iPhone and iPad Devices:

Option I: Via the device

1.Back up your data using iCloud or another backup method.
2. Go to the Settings menu and go to General.
3. On the bottom, tap on Reset.
4. Tap on Erase All Content and Settings.
5. Confirm it by tapping on the red Erase button and then type your password.

Option II: Via iTunes

1. Connect your device and open iTunes.
2. Click on the device‘s name and model to open the dialog box.
3. From there, click on the button “Restore”

For Android Devices:

After you have backed up your files, you should perform a clean wipe-out of your phone. This can happen either via one of the options in Safe Mode or by entering your device’s Recovery Mode. Several methods exist in order to enter Recovery Mode of your device:


For Nexus Devices: – Hold the Volume Down + Volume Up + Power button until a Recovery menu appears. After that, you should select the Wipe Data/Factory reset option. Nexus 4 may work with Volume Up + Power + Volume Down.

For Samsung Devices: – Hold the Volume Up + Power Button + Home Button until a Recovery menu appears. After that, you should select the Wipe Data/Factory reset option.

For Motorola Droid X Devices: Hold the Home Button + Power Button until a Recovery menu appears. After that, you should select the Wipe Data/Factory reset setting.

For other devices with camera buttons on them: Hold the Volume Up + Camera Button until a Recovery Menu appears. After this, you should choose the Wipe Data/Factory reset option.

Also in case you have backed up your device in a Google Account, you will be able to restore your data after a complete wipe-out by just logging into your Google Account with you email and password.

3. Restore missing or corrupt files using special file restoration software

Restore Missing or Corrupt Files

1. Connect your phone via a USB cable. You should see it in “My Computer”
2. Use different file recovery software to scan for and recover the files in its drive. Examples of programs we have tested are provided below:


Ventsislav Krastev

Ventsislav has been covering the latest malware, software and newest tech developments at SensorsTechForum for 3 years now. He started out as a network administrator. Having graduated Marketing as well, Ventsislav also has passion for discovery of new shifts and innovations in cybersecurity that become game changers. After studying Value Chain Management and then Network Administration, he found his passion within cybersecrurity and is a strong believer in basic education of every user towards online safety.

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