CmdRansomware Virus

Also Known As: CmdRansomware malware
Distribution: Low
Damage level: Severe

CmdRansomware ransomware removal instructions

What is CmdRansomware?

Discovered by security researcher Petrovic, CmdRansomware is a ransomware virus that is designed to lock (encrypt) files, rendering them unusable until a decryption tool or key is obtained from cyber criminals. In this way, CmdRansomware is used to make ransom demands. It renames each encrypted file by adding the ".cmd_ransomware" extension. For example, "sample.jpg" becomes "sample.jpg.cmd_ransomware". CmdRansomware victims will find a ransom-demand message in the "cmdRansomware.txt" text file.

According to the ransom-demand message in "cmdRansomware.txt" (which is in Russian), if CmdRansomware victims cannot find the "cmdRansomware_key.bin" file (used for identification), it can be found in the "TEMP" or "APPDATA" folder. Cyber criminals also inform victims that they can be contacted via the and email addresses. There is no information regarding the ransom size or other details. Further information is probably given only when victims contact CmdRansomware developers. In any case, cyber criminals usually ignore victims once they receive payment for the decryption tool/key and their ransom demands are met. Therefore, never trust cyber criminals. Unfortunately, most use cryptography algorithms (symmetric or asymmetric) that generate unique keys. Cyber criminals store them on remote servers accessible only by them. There are currently no tools capable of cracking CmdRansomware encryption. Therefore, the only way to retrieve files free of charge is to use an existing backup and restore them from there.

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

CmdRansomware decrypt instructions

Most ransomware-type viruses are very similar. Some examples of other infections of this type are Risk, Bip, and Lolita. They all encrypt files and make ransom demands. The main differences are usually the cryptography algorithm used to encrypt files and ransom sum required for the decryption tool or key. Unfortunately, manual decryption of files is impossible, unless the virus contains bugs/flaws or is not fully developed. Therefore, we recommend that you maintain regular backups and locate them on remote servers or unplugged storage devices. If not, backups might be encrypted together with other data.

How did ransomware infect my computer?

It is difficult to determine exactly what causes CmdRansomware infections, however, cyber criminal use  popular distribution methods such as spam email campaigns, untrustworthy software download sources, trojans, and fake updaters. Spam campaigns spread viruses by presenting malicious email attachments (or links) as legitimate and tricking users into opening them. Attached files can be Microsoft Office documents, executable files (.exe), archive files (RAR and others), etc. Untrustworthy software download sources such as peer-to-peer networks, freeware download and free file hosting websites and other sources are used by criminals who present malicious files as legitimate. In this way, users are often tricked into installing viruses. Trojans are malicious programs that proliferate other viruses. If a trojan is installed, it will probably cause additional infections. Fake software updaters usually infect systems by exploiting outdated software bugs/flaws or simply downloading infections rather than the promised updates.

Threat Summary:
NameCmdRansomware malware
Threat TypeRansomware, Crypto Virus, Files locker
SymptomsCan't open files stored on your computer, previously functional files now have a different extension, for example my.docx.locked. A ransom demanding message is displayed on your desktop. Cyber criminals are asking to pay a ransom (usually in bitcoins) to unlock your files.
Distribution methodsInfected email attachments (macros), torrent websites, malicious ads.
DamageAll 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.

To eliminate CmdRansomware malware our malware researchers recommend scanning your computer with Spyhunter.
▼ Download Spyhunter
Free scanner checks if your computer is infected. To remove malware, you have to purchase the full version of Spyhunter.

How to protect yourself from ransomware infections?

Avoid opening attachments or links that are presented in emails sent from unknown, suspicious email addresses. If you suspect that an email is irrelevant, do not open any attached file or click the presented link. Download software using direct links, trustworthy, and official sources only. Avoid using third party downloaders, installers or other untrustworthy sources. These can be (and often are) used to proliferate rogue applications that are capable of causing computer infections (or other problems). Update installed software using tools or implemented functions provided by official software developers. Have a reputable anti-virus or anti-spyware suite installed and keep it enabled at all times. These tools can detect infections before they do any damage. If your computer is already infected with CmdRansomware, we recommend running a scan with Spyhunter for Windows to automatically eliminate this ransomware.

Text presented in CmdRansomware ransomware text file ("cmdRansomware.txt"): 

Frequently Asked Questions (FAQ) :
Q: У меня нету файла cmdRansomware_key.bin, и как я тогда по вашему пройду идентификацию??
A: Откройте проводник, и напишите в строку: процент TEMP процент, если же Вы не нашли Ваш уникальный файл, то напишите: процент APPDATA процент, в корне этой директории хранится Ваш ключ

Q: Та почта не отвечает
A: Есть еще: и

Screenshot of files encrypted by CmdRansomware (".cmd_ransomware" extension):

Files encrypted by CmdRansomware

CmdRansomware ransomware removal:

Instant automatic removal of CmdRansomware malware: Manual threat removal might be a lengthy and complicated process that requires advanced computer skills. Spyhunter is a professional automatic malware removal tool that is recommended to get rid of CmdRansomware malware. Download it by clicking the button below:
▼ DOWNLOAD Spyhunter By downloading any software listed on this website you agree to our Privacy Policy and Terms of Use. Free scanner checks if your computer is infected. To remove malware, you have to purchase the full version of Spyhunter.

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 CmdRansomware 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 CmdRansomware 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 CmdRansomware 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 CmdRansomware 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 CmdRansomware, 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 CmdRansomware 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 as well as 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 CmdRansomware 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 virus and spyware activity level today:

Medium threat activity

Increased attack rate of infections detected within the last 24 hours.

QR Code
CmdRansomware malware 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 CmdRansomware malware on your mobile device.
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Platform: Windows

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