How to remove Ogdo virus and restore encrypted files

That article is about ransomware called Ogdo that penetrates customers' machines in all countries of the world, and corrupts the files. In this article you will find full info about what is Ogdo, and how to remove Ogdo from your laptop. Besides, we'll explain how to recover the cyphered data, if possible.

Ogdo ransomware virus

Ogdo ransomware had penetrated thousands of machines around the world via easiest way: false messages with dangerous attachments. Also, hackers use zero-day vulnerabilities to infect the system, but they are speedily fixed. After the infection, the virus checks the hard drive, determines the number of folders to be encrypted and their approximate price. Currently, any modern virus knows how to encrypt text, audio, image and video information in all known extensions. Ransomware corrupts all files, but the ones that might be business records go first. All software in the system will be untouched because hackers are interested only in information. Encryption is performed via famous RSA and AES algorithms, and it is so sophisticated that that it cannot be bruteforced. This is the root for unbelievable efficiency of ransomware in last years: common user, even if he has a fairly good knowledge of the PC, will never be able to get back the data, and will have to pay ransom. The single method to get back files is to hack the scammer's website and get the master key. Sometimes it is possible to withdraw encryption keys due to flaws in viruse's program code.

The computer knowledge is extremely important in progressive world, because it assists user to protect the laptop from computer viruses. It's sad to say, but most people comprehend the significance of PC literacy just when ransomware penetrates their machines. To defend your PC, you should keep in mind these three simple principles:

    • Do not neglect the symptoms that your PC displays. Data encryption is a complex operation that requires a lot of PC resources. When the malware starts to work, the CPU speed decreases, and the encrypting process emerges in Process Manager. You may anticipate this moment and shut down the system before files will be totally lost. This, if the PC is really infected, will protect some of your information.
    • Carefully examine your e-mails, particularly the messages that have attached files. The #1 pattern of fraud letters is the story about prize winning or parcel receiving. The second most efficient type of such messages is a forgery for biz correspondence. Invoices for services and products, lawsuits, reports, summaries and other important information don't be sent accidentally, and the receiver should know the sender. Otherwise, it is a scam.
    • Pay attention to the pop-up windows. If the PC is penetrated by malware, it will try to delete the shadow copies of the files, to decrease the possibility of recovery. Anyway, removal of copies needs administrator rights and user's confirmation. If you'll stop for a moment before accepting the checkbox, it can save your information and your money.

Malware removal isn't answer to the whole problem - it's only a first move from many until the full data recovery. To restore the information you'll have to read the tips in the next chapter of this entry. To remove the ransomware, you have to start the PC at safe mode and check it via antivirus software. We do not recommend anyone to eliminate ransomware manually, since it has different security mechanisms which could counteract you. The most common ransomware protection technique is the deletion of files on the chance of file recovery or virus removal attempt. This is extremely undesirable, and the following guide will assist you to avoid 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

Startup

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 deleting Ogdo from the laptop, you just need to restore the corrupted data. It's impossible to reverse the encryption, but we'll restore them through OS features and the particular software. There are the some chances, but most of the time data recovery takes lots of time and money. If you can't linger and are going to restore the information by hand - here's the useful entry on that topic.

To restore information, follow the article about files decryption.

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