.Aleta File Virus (Restore Files + Remove) - How to, Technology and PC Security Forum | SensorsTechForum.com

.Aleta File Virus (Restore Files + Remove)

A blog post created to help you fully remove Aleta ransomware (BTCWare variant) from your PC and show how to restore .aleta encrypted files.

It seems as if BTCWare ransomware is an attractive type of virus for many coders, since many new variants of it have been released the last few months. The latest of those is Aleta ransomware and it is not fooling around. The virus encodes the files on the computers that have been infected by it, adding the .aleta file extension after their name. The virus also changes the wallpaper on the victim’s computer and asks to contact the cyber-criminals’ email (black.mirror@qq.com) to get the files back. The crooks threaten to eliminate any possibility of you restoring your files 36 hours after infection. If your computer has become a victim of Aleta ransomware, we advise you to read this material carefully.

Threat Summary

TypeRansomware, Cryptovirus
Short DescriptionEncrypts the files on the infected computer using AES cipher after which asks for a payment in BitCoin.
SymptomsA black-green wallpaper, starting with “ALETA RANSOMWARE“. Files encrypted with the .aleta file extension. A ransom note, named #_READ_ME_#.inf.
Distribution MethodSpam Emails, Email Attachments, Executable files
Detection Tool See If Your System Has Been Affected by Aleta


Malware Removal Tool

User ExperienceJoin Our Forum to Discuss Aleta.
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.

How Does Aleta Ransomware Cause an Infection

Similar to the other BTCWare ransomware variants, the Aleta ransomware uses a fake company name, for example Amazon.com, eBay.com, PayPal.com, FedEx, DHL or others. These company names may be used in spam e-mails, such as the one below:

“Dear Customer, Greetings from Amazon.com
We are writing to let you know that the following item has been sent using Royal Mail.
For more information about delivery estimates and any open orders, please open the order invoice attached.
Your order number: #241-24244152-12412312441”

Along those e-mails there may be e-mail attachments which pretend to be receipts or invoices. Upon opening, those attachments may cause the infection on your PC.

Other methods by which your computer could become victimized by the .aleta file virus is to infect it via fake Windows updates, fake setups of programs, fraudulent key generators, cracks for games or other type of license activators that may exist on suspicious websites.

Aleta BTCWare Ransomware – Analysis

As soon as the infection file, which is usually a loader or a dropper, is activated, it may drop the malicious files of Aleta ransomware on the infected PC. The malicious files are dropped In the usually targeted by malware administrative Windows folders:

  • %AppData%
  • %Temp%
  • %Roaming%
  • %Local%
  • %SystemDrive%

When the files are dropped, the virus may immediately target the Shadow Volume Service and delete the shadow volume copies by executing the vssadmin and the bcedit commands without you noticing it:

→ process call create “cmd.exe /c vssadmin.exe delete shadows /all /quiet & bcdedit.exe /set {default} recoveryenabled no & bcdedit.exe /set {default} bootstatuspolicy ignoreallfailures”

Among the malicious activities of the Aleta ransomware virus may add custom Windows Registry Entries in the registry editor. The most predominantly targeted registry sub-keys are the Run and RunOnce ones.

.Aleta File Ransomware – Encryption Process

For the virus to encrypt your files, it uses the Advanced Encryption Algorithm (AES). The encryption of Aleta aims to replace blocks of data in an original file with encrypted blocks of data. This makes the file no longer able to be opened, unless you have the private key which corresponds to your infection.

The .Aleta ransomware may target files with the following file extensions to encrypt them:

.1c, .3fr, .accdb, .ai, .arw, .bac, .bay, .bmp, .cdr, .cer, .cfg, .config, .cr2, .crt, .crw, .css, .csv, .db, .dbf, .dcr, .der, .dng, .doc, .docm, .docx, .dwg, .dxf, .dxg, .eps, .erf, .gif, .htm, .html, .indd, .iso, .jpe, .jpeg, .jpg, .kdc, .lnk, .mdb, .mdf, .mef, .mk, .mp3, .mp4, .mrw, .nef, .nrw, .odb, .ode, .odm, .odp, .ods, .odt, .orf, .p12, .p7b, .p7c, .pdd, .pdf, .pef, .pem, .pfx, .php, .png, .ppt, .pptm, .pptx, .psd, .pst, .ptx, .r3d, .rar, .raw, .rtf, .rw2, .rwl, .sql, .sr2, .srf, .srw, .tif, .wb2, .wma, .wpd, .wps, .x3f, .xlk, .xls, .xlsb, .xlsm, .xlsx, .zip

As soon as the encryption process is completed, the Aleta ransomware adds the .aleta file extension to the encrypted files:

Finally, the ransomware drops it’s ransom note, which has the following message:

[WHAT HAPPENED] Your important files produced on this computer have been encrypted due a security problem
If you want to restore them, write us to the e-mail: black.mirror@qq.com
You have to pay for decryption in Bitcoins. The price depends on how fast you write to us.
After payment we will send you the decryption tool that will decrypt all your files.
[FREE DECRYPTION AS GUARANTEE] Before paying you can send to us up to 3 files for free decryption.
Please note that files must NOT contain valuable information
and their total size must be less than 1Mb
[HOW TO OBTAIN BITCOINS] The easiest way to buy bitcoin is LocalBitcoins site.
You have to register, click Buy bitcoins and select the seller by payment method and price
[ATTENTION] Do not rename encrypted files
Do not try to decrypt your data using third party software, it may cause permanent data loss
If you not write on e-mail in 36 hours – your key has been deleted and you cant decrypt your files
Your ID:

Remove Aleta Ransomware Virus and Restore .aleta Encrypted Files

In the event that your computer is infected by the Aleta variant of the BTCWare ransomware virus family, we advise you to backup your encrypted files on a USB flash drive or another external drive, since the virus may be decrypted very soon.

In the meantime, you can remove the Aleta ransomware virus by using the removal instructions below. They are specifically designed to help remove the ransomware either manually or automatically. Since manual removal may be a risky process, the ransomware virus should be removed automatically by using an advanced anti-malware software for maximum safety and effectiveness.

For the restoration of encrypted files, we advise holding on to your encrypted files while a decryptor is developed. In the meantime you can try and restore at least some of the files using the alternative instructions in step “2. Restore files encrypted by Aleta”.


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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