How to remove Cesar virus and restore encrypted files

Cesar ransomware virus

This entry is about Cesar virus which penetrates users' systems around the world, and cyphers their data. Here you can find full info on what is Cesar, and how to get rid of Cesar from your PC. Besides, we will explain how to recover the encrypted files and is it possible.

Cesar (Cezar) is also known as Drahma virus. Cesar ransomware had penetrated many computers in various countries through easiest method: scam messages with viral attachments. Sometimes scammers use exploits to take control over the system, but well-known software developers quickly correct them. When infection takes place, ransomware scans the hard disc, defines the quantity of files for encryption and their rough cost. Nowadays, each modern ransomware knows how to cypher text, image, video and audio files in all most used extensions. Extra attention is paid to business documents, since businessmen are the main objective for criminals. All software on PC will be safe since hackers are interested only in information. The process is carried out through famous AES and RSA algorithms, and its intricacy is so above the average level that decryption of data without a key is impossible. Such complexity creates reason for impressive efficiency of ransomware in recent years: an ordinary customer, even if he has a very good experience in suchlike things, will never decrypt the data, and will have to pay the price. The single manner to decrypt the data is to hack the scam webpage and obtain the encryption keys. Sometimes it is possible to withdraw encryption keys through defects in viruse's program code. During the encryption, Cesar changes the extension of files  and requires  bitcoin for data restoration.

The knowledge of computers is extremely important in modern world, since it helps user to guard the workstation from unwanted software. Unfortunately, most people see the importance of computer literacy only when ransomware takes over their workstations. To guard yourself, you have to remember a few basic rules:

    • Don't ignore the symptoms that your computer displays. Information encrypting is a intricate act that requires a lot of system resources. If you mention an abnormal drop in PC performance or notice a weird string in the Process Manager, you can shut down the machine, launch it in safe mode, and run the antivirus. Surely, some files will be damaged, but the rest of them will remain intact.
    • Be careful with the messages which contain something more than a message. The most popular pattern of fraud letters is the notification about prize winning or package obtaining. The other efficient sort of scam messages is a "business messages". lawsuits, appeals, summaries, Invoices for services and products and similar specific information don't be sent without warning, and the addressee should know the sender. Otherwise, it is a scam.
    • Do not admit any alterations to your PC, originating from unknown software. One of the most efficient ways of file restoration is the restoration via Shadow Copies, and hackers have added the elimination of shadow copies in the default features of malware. The deletion of shadow copies needs admin rights and your confirmation. If you'll stop for few seconds before confirming the pop-up, it may save your data and your efforts.

We draw your attention to the fact that the deletion of ransomware is only the first and compulsory step for the standard operation of the machine. To get back the data you'll have to familiarize with the instructions in the next part of this entry. In case of ransomware we don't give the by-hand removal guide, since its complexity and the probability of failing is extremely high for common user. We do not recommend anyone to delete Cesar by hand, since it has numerous defensive mechanisms that could interfere you. Modern viruses are able to easily remove encrypted data, or some of it, when trying to uninstall the program. This is extremely undesirable, and the below instruction will help you to deal with it.

Removal instruction

Step 1. Boot into Safe mode

Safe mode

Start -> Msconfig.exe

Safe mode. Step 1

On the tab Boot select Safe boot

Safe mode. Step 2

Step 2. Check Startup folder

Start -> Msconfig.exe ->Disable unknown programs in the Startup tab


Step 3. Check hosts file

Modify hosts file, that located in C:\Windows\System32\drivers\etc\ .

Hosts file.Step 1

Open the file with Notepad and delete suspicious strings.

Hosts file.Step 2

It has to look like this:

Hosts file.Step 3

Step 4. Scan the system with antiviral scanner


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Step 5. Disable Safe mode

Start -> Msconfig.exe ->Disable Safe boot in the Boot tab

Deactivate Safe mode

After removing Cesar from the PC, you should restore the encrypted information. Actually, this is not about decipherment, as the encrypting methods owned by fraudsters are extremely complex. There are the some exceptions, but usually file recovery takes plenty of time and money. If you're more interested in the independent data restore - read our item, which shows all the safest manners.

To restore information, follow the article about files decryption.

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