Remove Rooster865qq ransomware from your operating system

Also Known As: Rooster865qq virus
Distribution: Low
Damage level: Medium

Rooster865qq ransomware removal instructions

What is Rooster865qq?

Discovered by Raby, Rooster865qq is malicious software belonging to the Maoloa ransomware family. This program is designed to encrypt victims' data and demand ransom payments for decryption. When Rooster865qq encrypts files, it renames them with the ".Rooster865qq" extension. Therefore, "1.jpg" becomes "1.jpg.Rooster865qq", and so on for all affected files. After this process is complete, an executable file called "HOW TO BACK YOUR FILES.exe" is created and stored on the desktop.

The executable file contains the ransom message, which urges victims to follow the instructions to recover their data. They require a decryption tool/software to decrypt their data and are encouraged to contact the developers of Rooster865qq via the email address provided in the message. The user's email must contain a personal ID, which is also listed in "HOW TO BACK YOUR FILES.exe". To prove that recovery is possible, victims are permitted to attach one text or image file free of charge for decryption. Further instructions are then provided about how to purchase decryption tools from the cyber criminals (i.e., how to pay the ransom). The message emphasizes that only they (the criminals behind Rooster865qq) can decrypt the data. Users are warned that running anti-virus software might delete the executable file, and then all contact information is lost. Furthermore, manual decryption (without the involvement of the ransomware developers) will result in permanent data loss. The decoders (tools/keys) of other victims are ineffective, since each encryption key is generated individually, and is unique. Unfortunately, in most cases of ransomware-type infections, decryption with third party software is impossible. Since these malicious programs use strong encryption, files can only be recovered by the original encryption software. Despite this, you are advised against paying or communicating with cyber criminals. These people can never be trusted. Despite paying, many users receive none of the promised tools, which leaves their data inaccessible. Removing Rooster865qq will not restore the compromised files, but it will prevent this malware from further encryption. The data can be restored from a backup, if one was made prior to the attack and was stored in a different location.

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

Rooster865qq decrypt instructions

All ransomware encrypts files and demands payment for decryption tools/software. ForvCYBORG, and Sanders4 are some examples of malicious software similar to Rooster865qq. There are some key differences between ransomware infections, such as the cryptographic algorithms the programs use (symmetric or asymmetric) and size of ransom. Unless the malware is still in development and/or has certain flaws/bugs, manual decryption is impossible. To protect files against data encryption and damaging attacks, keep backups on remote servers and/or unplugged storage devices. Ideally, multiple backup copies should be stored in separate locations.

How did ransomware infect my computer?

Ransomware and other malware is typically proliferated through spam campaigns, trojans, untrustworthy download sources, fake program updaters and illegal activation ("cracking") tools. Spam campaigns are used to send out thousands of deceptive emails containing dangerous attachments (or web-links leading to them). The letters are usually disguised as "official", "important", "urgent", or similar priority mail. Opening the attached files is the source of infection. These attachments come in various formats, such as executable and archive files, Microsoft Office and PDF documents, JavaScript, etc. Trojans are malicious programs, which operate by downloading/installing additional malware. Untrustworthy download sources (e.g. Peer-to-Peer sharing networks, unofficial and free file-hosting websites, third party downloaders, etc.) are full of dubious and potentially harmful content. Fake updaters abuse flaws in outdated software and/or simply install malware, rather than the promised updates. Illegal activation tools ("cracks") infect systems similarly - by downloading/installing malicious programs rather than activating licensed products.

Threat Summary:
Name Rooster865qq virus
Threat Type Ransomware, Crypto Virus, Files locker.
Encrypted Files Extension .Rooster865qq
Ransom Demanding Message HOW TO BACK YOUR FILES.exe
Cyber Criminal Contact
Detection Names Avast (Win32:DropperX-gen [Drp]), BitDefender (Generic.Ransom.GlobeImposter.399F7C03), ESET-NOD32 (A Variant Of Win32/Filecoder.Maoloa.C), Kaspersky (, 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 open suspicious and/or irrelevant emails, especially if received from unknown senders. Attachments or links found in suspect emails must never be opened, as this can lead to an infection. Use official and verified download sources. Software should be activated and updated via tools/functions provided by genuine developers - illegal activation ("cracking") tools and third party updaters are a risk to device safety. Have reputable anti-virus/anti-spyware software installed and kept up-to-date. Perform regular system scans and remove any detected threats. If your computer is already infected with Rooster865qq, we recommend running a scan with Malwarebytes for Windows to automatically eliminate this ransomware.

Screenshot of the full ransom demand message:

rooster865qq full note

Text presented in Rooster865qq ransom message ("HOW TO BACK YOUR FILES.exe"):

Your personal ID
 English ?Your files are encrypted!?


To decrypt, follow the instructions below.
To recover data you need decrypt tool.
To get the decrypt tool you should:

Send 1 crypted test image or text file or document to
In the letter include your personal ID (look at the beginning of this document). Send me this ID in your first email to me.
We will give you free test for decrypt few files (NOT VALUE) and assign the price for decryption all files.
After we send you instruction how to pay for decrypt tool and after payment you will receive a decrypt tool and instructions how to use it We can decrypt few files in quality the evidence that we have the decoder.



Do not contact other services that promise to decrypt your files, this is fraud on their part! They will buy a decoder from us, and you will pay more for his services. No one, except, will decrypt your files.


Only can decrypt your files
Do not trust anyone besides
Antivirus programs can delete this document and you can not contact us later.
Attempts to self-decrypting files will result in the loss of your data
Decoders other users are not compatible with your data, because each user's unique encryption key

Screenshot of files encrypted by Rooster865qq (".Rooster865qq" extension):

Files encrypted by Rooster865qq

Rooster865qq 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 Rooster865qq 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 Rooster865qq 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 Rooster865qq 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 Rooster865qq 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 Rooster865qq, 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 Rooster865qq 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 Rooster865qq 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
Rooster865qq virus QR code
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