How to remove Usam virus and restore encrypted files

That guide is about Usam ransomware which gets  on users' PC around the world, and encrypts the files. Here you can see complete information about Usam's essence, and the uninstalling of Usam from your workstation. In addition, we'll tell you how to restore the encrypted data and is it possible.

Usam ransomware virus

Usam is the unwanted software getting into machines mostly via Trojans and phishing e-mails. Also, hackers use exploits to infect the PC, but they are quickly corrected. When infection takes place, the virus reviews the computer memory, defines the amount of folders to be encrypted and their approximate cost. Currently, any new virus can cypher image, video, text and audio information in all most used formats. Special attention is attracted to businesslike files, since businessmen are the key objective for hackers. All software in the system will be unaffected because fraudsters are interested only in information. The process is performed with the help of famous encryption algorithms, and its intricacy is so high that it can't be bruteforced. Such complexity gives ground for unbelievable effectuality of this sort of viruses in recent years: common PC operator, even having a very high experience in suchlike things, won't ever recover the data, and will have no choice except paying to fraudsters. The only method to recover the information is to hack the scammer's website and withdraw the encryption keys. Sometimes it is possible to get the keys via defects in viruse's program code.

For any types of ransomware, one thing is correct: it is much simpler to prevent it than to get rid of its fruits. Statistically, 90% of users comprehend the importance of computer knowledge only when ransomware penetrates their workstations. You easily can decrease the chances to get encrypting virus if you'll follow these regulations:

    • Be careful with the e-mails that contain files. The #1 pattern of fraud messages is the notification about prize gaining or package receiving. The #2 popular kind of fraud letters is a "business letters". Invoices for services and products, summaries, lawsuits, appeals and other sensitive files do not be sent without warning, and you, as a minimum, should know the sender. Otherwise, it is a fraud.
    • Pay attention to the pop-ups. The most efficient manner of file recovery is the restoration through Shadow Copies, so the developers of viruses have included the removal of SC into the basic functionality of ransomware. The deleting of shadow copies needs admin rights and your verification. So, not confirming alterations from a weird program at the proper moment, you will keep the opportunity to decrypt all lost information free of charge.
    • Monitor the status of your machine. Information encrypting is a complicated process that needs a lot of PC resources. When the ransomware starts to work, the computer slows down, and the encryption process appears in Process Manager. You may recognize this event and unplug the workstation before files will be fully damaged. Of course, the certain amount of data will be corrupted, but you will have the other part.

You should know that the deletion of the virus is only the first and obligatory turn for the standard operation of the machine. To restore the files you should familiarize with the advices in the below chapter of this entry. In case of encrypting virus we don't provide the by-hand deletion instruction, since its complication and the likeliness of faults appears to be too high for common user. We do not advise anyone to remove ransomware in manual mode, since it has various defensive features that could counteract you. The very efficient ransomware defensive manner is the uninstalling of files on the chance of file recovery or Usam deletion attempt. To neutralize this, follow the advices below.

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 removing the virus from the laptop, you just need to recover the encrypted data. We're not able to decrypt the information, but we'll restore them via Windows features and the special software. Commonly, to restore the files, you should seek support on targeted communities or from celebrated virus fighters and AV program vendors. If you can't wait and are ready to restore the information by hand - here's the complete article on data recovery.

To restore information, follow the article about files decryption.

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