How to remove AIDS NT 2020 ransomware
Written by Tomas Meskauskas on (updated)
What is AIDS NT 2020?
This ransomware program was discovered by GrujaRS. Unlike other ransomware, AIDS NT 2020 does not encrypt files, but actually deletes them.
It also changes the desktop wallpaper, creates the "AIDS_NT_Instructions.txt" text file, and restricts access to folders and system settings (victims are blocked from accessing most of the operating system). Additionally, AIDS NT 2020 prevents victims from accessing all drives by hiding them.
Screenshot of a message encouraging users to pay a ransom to decrypt their compromised data:
AIDS NT 2020 ransomware overview
The "AIDS_NT_Instructions.txt" ransom message states that victims should not try to uninstall this ransomware manually or remove it with antivirus software - on the contrary, it suggests that they should disable any active antivirus suite, otherwise AIDS NT 2020 will cause even more damage.
The string of random characters (RYE94xWPXwQZSlIqItLDUA) at the bottom of this ransom message is often the username of a Telegram account, which cyber criminals behind AIDS NT 2020 provide so that victims can contact them for further instructions (information about how to pay the ransom and recover data).
In summary, victims of AIDS NT 2020 attacks lose most files, cannot access files that were not deleted or any folders, drives, system settings, etc., unless they contact cyber criminals for instructions about how to recover files. Note that victims of ransomware attacks are often scammed.
Cyber criminals do not help them to recover files, even after payment. Usually, the only way for victims to recover files free of charge is to restore them from a backup. Further encryption of any unaffected files can be prevented by uninstalling the ransomware, however, already compromised files remain encrypted even after removal of the rogue software.
Ransomware examples
More examples of ransomware are Txdot, BG85 and NOBAD. Generally, malware of this type encrypts data and creates and/or displays a ransom message with instructions about how to contact the developers, pay the ransom, and various other information.
Main differences are cost of a decryption tool/key and encryption algorithm (symmetric or asymmetric) that ransomware uses for data encryption. Note, however, that AIDS NT 2020 is different: it does not encrypt files, it simply deletes them. The only free way to recover files in this case is to use a data backup.
Therefore, potential victims can avoid data loss caused by this ransomware by having data backed up on remote servers and/or unplugged storage devices.
How did ransomware infect my computer?
In most cases, cyber criminals spread malicious programs through malspam campaigns, untrusted file/software download sources, Trojans, third party, fake software updating and unofficial software activation ('cracking') tools. Using malspam, they send emails that contain website links designed to download malicious files or attachments.
Examples of files that they attach to their emails are MS Office or PDF documents, JavaScript files, executable files such as .exe., archive files such as ZIP, RAR. When recipients open malicious files received via email, they cause installation of rogue software.
Untrusted file/software download sources are often used to trick people into downloading and executing malicious files disguised as regular and harmless, but actually designed to install malware.
Examples of dubious download sources are third party downloaders, Peer-to-Peer networks (e.g., torrent clients, eMule), unofficial pages, free file hosting and freeware download pages. Trojans are malicious programs that can cause chain infections.
If a computer is infected with a Trojan, there is a high probability that this malicious program will install another program of this kind. Fake updaters infect systems by installing malicious programs rather than updating or fixing already installed software, or by exploiting bugs/flaws of outdated software installed on the computer.
Third party (unofficial) activation tools are illegal programs that supposedly activate installed, licensed software free of charge (bypass activation), however, they often infect computers with malware instead.
| Name | AIDS NT 2020 virus |
| Threat Type | Ransomware, Data Wiper. |
| Ransom Demand Message | Desktop wallpeper, AIDS_NT_Instructions.txt |
| Cyber Criminal Contact | RYE94xWPXwQZSlIqItLDUA on Telegram. |
| Symptoms | Cannot open files stored on your computer, previously functional files now inaccessible or deleted, drives are hidden. Cyber criminals demand payment of a ransom in exchange for data recovery. |
| Distribution methods | Infected email attachments (macros), torrent websites, malicious ads. |
| Damage | All files cannot be restored 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 Combo Cleaner. |
How to protect yourself from ransomware infections
You are advised against opening attachments or website links in irrelevant emails that are received from unknown, suspicious addresses. Commonly, these emails are sent by cyber criminals who attempt to trick recipients into opening the attached file (or a file downloaded via website link) in order to infect computers with malware.
Furthermore, software and files should be downloaded only from official websites and through direct links. Peer-to-Peer networks, unofficial pages, third party downloaders, installers and other similar sources and tools can be used to distribute malware.
Installed programs (and operating systems) must be updated and activated with tools or implemented functions provided by official developers. Third party, unofficial tools should never be used. Furthermore, it is illegal to activate licensed software with unofficial ('cracking') tools.
Regularly scan your computer with reputable anti-spyware or antivirus software (keep this software up to date). If your computer is already infected with AIDS NT 2020, we recommend running a scan with Combo Cleaner Antivirus for Windows to automatically eliminate this ransomware.
Screenshot of AIDS NT 2020 text file ("AIDS_NT_Instructions.txt"):
Text in this message:
Здравствуйте!
Если вы это читаете, то Ваш персональный компьютер заражен троянской программой AIDS NT 2020.
Здесь находится ключ к спасению, а также дополнительная информация.
Чтобы спасти ПК и не усугубить ситуацию надо:
1. Не пытаться уничтожить вирус самостоятельно или при помощи антивируса. Антивирус здесь в принципе бессилен.
2. Отключить все антивирусы, которые у Вас есть. Это помешает дальнейшей разблокировки файлов.
3. И самое важное: надейтесь на лучшее, ведь вам предстоит тернистый путь------------------------------
Hello!
If you are reading this, Your personal computer is infected with the Trojan program AIDS NT 2020.
Here is the key to salvation, as well as additional information.
To save the PC and not make the situation worse, you need to:
1. Do not try to destroy the virus yourself or with an antivirus. Antivirus is basically powerless here.
2. Disable all antivirus programs that You have. This will prevent further unblocking of files.
3. and most importantly: hope for the best, because you have a thorny path ahead of you------------------------------
電報 сказал что все ответы есть в RYE94xWPXwQZSlIqItLDUA
Screenshot of a pop-up window (notifying victims about the forthcoming system restart), which appears after execution of a malicious file designed to install AIDS NT 2020:
Screenshot of a pop-up window which appears while trying to open files/folders:
Screenshot of My Computer containing no drives:
AIDS NT 2020 ransomware removal:
Instant automatic malware removal:
Manual threat removal might be a lengthy and complicated process that requires advanced IT skills. Combo Cleaner is a professional automatic malware removal tool that is recommended to get rid of malware. Download it by clicking the button below:
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Video suggesting what steps should be taken in case of a ransomware infection:
Quick menu:
- What is AIDS NT 2020 virus?
- STEP 1. Reporting ransomware to authorities.
- STEP 2. Isolating the infected device.
- STEP 3. Identifying the ransomware infection.
- STEP 4. Searching for ransomware decryption tools.
- STEP 5. Restoring files with data recovery tools.
- STEP 6. Creating data backups.
If you are a victim of a ransomware attack we recommend reporting this incident to authorities. By providing information to law enforcement agencies you will help track cybercrime and potentially assist in the prosecution of the attackers. Here's a list of authorities where you should report a ransomware attack. For the complete list of local cybersecurity centers and information on why you should report ransomware attacks, read this article.
List of local authorities where ransomware attacks should be reported (choose one depending on your residence address):
USA - Internet Crime Complaint Centre IC3
United Kingdom - Action Fraud
Spain - Policía Nacional
France - Ministère de l'Intérieur
Germany - Polizei
Italy - Polizia di Stato
The Netherlands - Politie
Poland - Policja
Portugal - Polícia Judiciária
Isolating the infected device:
Some ransomware-type infections are designed to encrypt files within external storage devices, infect them, and even spread throughout the entire local network. For this reason, it is very important to isolate the infected device (computer) as soon as possible.
Step 1: Disconnect from the internet.
The easiest way to disconnect a computer from the internet is to unplug the Ethernet cable from the motherboard, however, some devices are connected via a wireless network and for some users (especially those who are not particularly tech-savvy), disconnecting cables may seem troublesome. Therefore, you can also disconnect the system manually via Control Panel:
Navigate to the "Control Panel", click the search bar in the upper-right corner of the screen, enter "Network and Sharing Center" and select search result: 
Click the "Change adapter settings" option in the upper-left corner of the window: 
Right-click on each connection point and select "Disable". Once disabled, the system will no longer be connected to the internet. To re-enable the connection points, simply right-click again and select "Enable". 
Step 2: Unplug all storage devices.
As mentioned above, ransomware might encrypt data and infiltrate all storage devices that are connected to the computer. For this reason, all external storage devices (flash drives, portable hard drives, etc.) should be disconnected immediately, however, we strongly advise you to eject each device before disconnecting to prevent data corruption:
Navigate to "My Computer", right-click on each connected device, and select "Eject": 
Step 3: Log-out of cloud storage accounts.
Some ransomware-type might be able to hijack software that handles data stored within "the Cloud". Therefore, the data could be corrupted/encrypted. For this reason, you should log-out of all cloud storage accounts within browsers and other related software. You should also consider temporarily uninstalling the cloud-management software until the infection is completely removed.
Identify the ransomware infection:
To properly handle an infection, one must first identify it. Some ransomware infections use ransom-demand messages as an introduction (see the WALDO ransomware text file below).
This, however, is rare. In most cases, ransomware infections deliver more direct messages simply stating that data is encrypted and that victims must pay some sort of ransom. Note that ransomware-type infections typically generate messages with different file names (for example, "_readme.txt", "READ-ME.txt", "DECRYPTION_INSTRUCTIONS.txt", "DECRYPT_FILES.html", etc.). Therefore, using the name of a ransom message may seem like a good way to identify the infection. The problem is that most of these names are generic and some infections use the same names, even though the delivered messages are different and the infections themselves are unrelated. Therefore, using the message filename alone can be ineffective and even lead to permanent data loss (for example, by attempting to decrypt data using tools designed for different ransomware infections, users are likely to end up permanently damaging files and decryption will no longer be possible even with the correct tool).
Another way to identify a ransomware infection is to check the file extension, which is appended to each encrypted file. Ransomware infections are often named by the extensions they append (see files encrypted by Qewe ransomware below).
This method is only effective, however, when the appended extension is unique - many ransomware infections append a generic extension (for example, ".encrypted", ".enc", ".crypted", ".locked", etc.). In these cases, identifying ransomware by its appended extension becomes impossible.
One of the easiest and quickest ways to identify a ransomware infection is to use the ID Ransomware website. This service supports most existing ransomware infections. Victims simply upload a ransom message and/or one encrypted file (we advise you to upload both if possible).
The ransomware will be identified within seconds and you will be provided with various details, such as the name of the malware family to which the infection belongs, whether it is decryptable, and so on.
Example 1 (Qewe [Stop/Djvu] ransomware):
Example 2 (.iso [Phobos] ransomware):
If your data happens to be encrypted by ransomware that is not supported by ID Ransomware, you can always try searching the internet by using certain keywords (for example, a ransom message title, file extension, provided contact emails, crypto wallet addresses, etc.).
Search for ransomware decryption tools:
Encryption algorithms used by most ransomware-type infections are extremely sophisticated and, if the encryption is performed properly, only the developer is capable of restoring data. This is because decryption requires a specific key, which is generated during the encryption. Restoring data without the key is impossible. In most cases, cybercriminals store keys on a remote server, rather than using the infected machine as a host. Dharma (CrySis), Phobos, and other families of high-end ransomware infections are virtually flawless, and thus restoring data encrypted without the developers' involvement is simply impossible. Despite this, there are dozens of ransomware-type infections that are poorly developed and contain a number of flaws (for example, the use of identical encryption/decryption keys for each victim, keys stored locally, etc.). Therefore, always check for available decryption tools for any ransomware that infiltrates your computer.
Finding the correct decryption tool on the internet can be very frustrating. For this reason, we recommend that you use the No More Ransom Project and this is where identifying the ransomware infection is useful. The No More Ransom Project website contains a "Decryption Tools" section with a search bar. Enter the name of the identified ransomware, and all available decryptors (if there are any) will be listed.
Restore files with data recovery tools:
Depending on the situation (quality of ransomware infection, type of encryption algorithm used, etc.), restoring data with certain third-party tools might be possible. Therefore, we advise you to use the Recuva tool developed by CCleaner. This tool supports over a thousand data types (graphics, video, audio, documents, etc.) and it is very intuitive (little knowledge is necessary to recover data). In addition, the recovery feature is completely free.
Step 1: Perform a scan.
Run the Recuva application and follow the wizard. You will be prompted with several windows allowing you to choose what file types to look for, which locations should be scanned, etc. All you need to do is select the options you're looking for and start the scan. We advise you to enable the "Deep Scan" before starting, otherwise, the application's scanning capabilities will be restricted.
Wait for Recuva to complete the scan. The scanning duration depends on the volume of files (both in quantity and size) that you are scanning (for example, several hundred gigabytes could take over an hour to scan). Therefore, be patient during the scanning process. We also advise against modifying or deleting existing files, since this might interfere with the scan. If you add additional data (for example, downloading files/content) while scanning, this will prolong the process:
Step 2: Recover data.
Once the process is complete, select the folders/files you wish to restore and simply click "Recover". Note that some free space on your storage drive is necessary to restore data:
Create data backups:
Proper file management and creating backups is essential for data security. Therefore, always be very careful and think ahead.
Partition management: We recommend that you store your data in multiple partitions and avoid storing important files within the partition that contains the entire operating system. If you fall into a situation whereby you cannot boot the system and are forced to format the disk on which the operating system is installed (in most cases, this is where malware infections hide), you will lose all data stored within that drive. This is the advantage of having multiple partitions: if you have the entire storage device assigned to a single partition, you will be forced to delete everything, however, creating multiple partitions and allocating the data properly allows you to prevent such problems. You can easily format a single partition without affecting the others - therefore, one will be cleaned and the others will remain untouched, and your data will be saved. Managing partitions is quite simple and you can find all the necessary information on Microsoft's documentation web page.
Data backups: One of the most reliable backup methods is to use an external storage device and keep it unplugged. Copy your data to an external hard drive, flash (thumb) drive, SSD, HDD, or any other storage device, unplug it and store it in a dry place away from the sun and extreme temperatures. This method is, however, quite inefficient, since data backups and updates need to be made regularly. You can also use a cloud service or remote server. Here, an internet connection is required and there is always the chance of a security breach, although it's a really rare occasion.
We recommend using Microsoft OneDrive for backing up your files. OneDrive lets you store your personal files and data in the cloud, sync files across computers and mobile devices, allowing you to access and edit your files from all of your Windows devices. OneDrive lets you save, share and preview files, access download history, move, delete, and rename files, as well as create new folders, and much more.
You can back up your most important folders and files on your PC (your Desktop, Documents, and Pictures folders). Some of OneDrive’s more notable features include file versioning, which keeps older versions of files for up to 30 days. OneDrive features a recycling bin in which all of your deleted files are stored for a limited time. Deleted files are not counted as part of the user’s allocation.
The service is built using HTML5 technologies and allows you to upload files up to 300 MB via drag and drop into the web browser or up to 10 GB via the OneDrive desktop application. With OneDrive, you can download entire folders as a single ZIP file with up to 10,000 files, although it can’t exceed 15 GB per single download.
OneDrive comes with 5 GB of free storage out of the box, with an additional 100 GB, 1 TB, and 6 TB storage options available for a subscription-based fee. You can get one of these storage plans by either purchasing additional storage separately or with Office 365 subscription.
Creating a data backup:
The backup process is the same for all file types and folders. Here’s how you can back up your files using Microsoft OneDrive
Step 1: Choose the files/folders you want to backup.
Click the OneDrive cloud icon to open the OneDrive menu. While in this menu, you can customize your file backup settings.
Click Help & Settings and then select Settings from the drop-down menu.
Go to the Backup tab and click Manage backup.
In this menu, you can choose to backup the Desktop and all of the files on it, and Documents and Pictures folders, again, with all of the files in them. Click Start backup.
Now, when you add a file or folder in the Desktop and Documents and Pictures folders, they will be automatically backed up on OneDrive.
To add folders and files, not in the locations shown above, you have to add them manually.
Open File Explorer and navigate to the location of the folder/file you want to backup. Select the item, right-click it, and click Copy.
Then, navigate to OneDrive, right-click anywhere in the window and click Paste. Alternatively, you can just drag and drop a file into OneDrive. OneDrive will automatically create a backup of the folder/file.
All of the files added to the OneDrive folder are backed up in the cloud automatically. The green circle with the checkmark in it indicates that the file is available both locally and on OneDrive and that the file version is the same on both. The blue cloud icon indicates that the file has not been synced and is available only on OneDrive. The sync icon indicates that the file is currently syncing.
To access files only located on OneDrive online, go to the Help & Settings drop-down menu and select View online.
Step 2: Restore corrupted files.
OneDrive makes sure that the files stay in sync, so the version of the file on the computer is the same version on the cloud. However, if ransomware has encrypted your files, you can take advantage of OneDrive’s Version history feature that will allow you to restore the file versions prior to encryption.
Microsoft 365 has a ransomware detection feature that notifies you when your OneDrive files have been attacked and guide you through the process of restoring your files. It must be noted, however, that if you don’t have a paid Microsoft 365 subscription, you only get one detection and file recovery for free.
If your OneDrive files get deleted, corrupted, or infected by malware, you can restore your entire OneDrive to a previous state. Here’s how you can restore your entire OneDrive:
1. If you're signed in with a personal account, click the Settings cog at the top of the page. Then, click Options and select Restore your OneDrive.
If you're signed in with a work or school account, click the Settings cog at the top of the page. Then, click Restore your OneDrive.
2. On the Restore your OneDrive page, select a date from the drop-down list. Note that if you're restoring your files after automatic ransomware detection, a restore date will be selected for you.
3. After configuring all of the file restoration options, click Restore to undo all the activities you selected.
The best way to avoid damage from ransomware infections is to maintain regular up-to-date backups.
Frequently Asked Questions (FAQ)
My computer is infected with AIDS NT 2020 ransomware, should I format my storage device to get rid of it?
Malware removal rarely requires formatting.
What are the biggest issues that AIDS NT 2020 ransomware can cause?
Unlike most ransomware-type programs, AIDS NT 2020 does not encrypt data. Instead, this malware deletes files, denies access to files/folders, and hides drives. Hence, victims can experience permanent data loss.
What is the purpose of AIDS NT 2020 ransomware?
Most malware attacks are motivated by profit. In standard ransomware infections, the attackers demand payment for data decryption. AIDS NT 2020 does drop a message containing the cyber criminals' contact information, so they may still seek to deceive victims into paying by promising file recovery. Aside from financial gain, malicious software is also used to amuse the criminals, carry out personal vendettas, engage in hacktivism, and launch political/geopolitical attacks.
How did AIDS NT 2020 ransomware infiltrate my computer?
The most widely used malware distribution techniques include: drive-by downloads, trojans, spam mail, online scams, malvertising, dubious download channels (e.g., freeware and third-party sites, P2P sharing networks, etc.), illegal software activation tools ("cracks"), and fake updates.
Will Combo Cleaner protect me from malware?
Yes, Combo Cleaner is capable of detecting and eliminating most of the known malware infections. It must be stressed that high-end malicious software typically hides deep within systems – hence, performing a full system scan is paramount.
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