Erebus ransomware – files decryption and virus removal

Erebus, crooks did it again… second time in encryption-for-ransom

Erebus designates ransomware again.
The first instance of Erebus encryption-for-ransom dates back to the beginning of last autumn.
‘Le roi est mort, vive le roi!’ Here comes another piece of malicious code that holds data hostage bearing the same name.
The Erebus 2 is a sneaky trojan. It smartly bypasses User’s Account Control as its installation excludes the on-request authorization (UAC). For that purpose, the ransomware hacks Windows Registry so that the system launches the ransomware executable instead of the respective genuine system file with ‘msc’ extension.

Erebus virus creates README.html file

Erebus virus creates README.html file

A running instance of the trojan triggers Event Viewer. As the trojan at the previous stage of its attack has introduced relevant changes to the system registry, this activates fake and malicious encryption file abandoning the true system item with ‘msc’ extension. Event Viewer is recognized by OS as a trusted service so that any apps it would run are deemed harmless. That is how Erebus launches on a victim’s PC bypassing the due authorization by the user.
The installed ransomware first connects to IP identification service determining the physical location of its host. The infection also loads TOR using this browser for further networking.

As the preliminaries are done, the rogue proceeds with executing its main payload. It scans computer memory discarding some file extensions. However, the scan retains most popular and essential formats. The files detected as eligible undergo encryption with AES cipher. Their extensions are also subjected to the similar routine with the ROT-23 cipher.
Unfortunately, the ransomware also removes Shadow Volume Copies so that this option cannot be used for the purpose of data recovery.
The victims easily spot the notification dropped by the malware located on the desktop. Erebus ransomware actually opens that file, unless security tools block this action. The trojan also generates desktop alerts prompting the user to open its ransom note.
There is no way to directly decrypt data hacked by the ransomware. Paying $90 (in bitcoins, to the wallet specified by the ransomware) is not a solution either. The best choice so far is to try the manual routines below that hopefully restore the affected data to a certain degree. And of course, do not forget to back up your important data as frequently as possible.

Automated cleanup to remove Erebus encryptor

Infection vector for ransomware typically features a trojan. The one in question definitely subscribes to that routine. The trojan drops its body into target computer and proceeds with disabling the detecting functionality of any security solution installed. The antivirus is thus unable to spot introduction of virus from the remote server.
The ransomware invasion is indicative of its dropper residing in the computer memory. It also hints at other invasions. The PC can hardly be considered properly protected due to the impacts of the above trojan.
Ultimate option implies a total formatting for any drives of your PC. That is not an option for many users, for it destroys all the data hosted by the machine. The best solution to pick would be in-depth system examination with a reliable security suite.
The trojan that has installed Erebus ransomware, unless removed, is to trigger its installation campaign as soon as a new strain of ransomware is available. Thereby, it is critical to kill it as soon as possible.

The technique successfully overcomes malicious software, including any ransoming threats. It deploys a reputable security suite that offers not a single chance for malicious components to avoid detection and extermination. The software is incredibly user-friendly and operates on a single-click basic.

It is good to note the removal of Erebus ransomware does not recover the data affected. However, the virus is subject to compulsory extermination or else is going to introduce related infections into the machine.

1. Click the button to download the stub installer and go through several setup dialogs. Once the tool is up and running, click Start Computer Scan

2. Wait until the cleaner checks the PC for Erebus malicious code. As soon as the scan is completed, the report will list all malware objects spotted in the system. Make sure the entries for detected infections are checked, and select the Fix Threats feature. This will result in malware removal and system remediation, so you should now be good to go.

Restore the encrypted files

Erebus ransomware encryption is a sophisticated data modification. There is no simple and single solution to cover all the cases. Transferring the ransom as demanded by the crooks is not the way either.Kindly apply the methods outlined below as they have been carefully developed to provide a recovery help for the most severe cases of encrypting assaults.

Data recovery with automatic software

Good news is that the virus actually deals with copies of the files. The originals have been deleted. The removed data still can be restored by virtue of such tools as Data Recovery Pro.

Shadow Volume Copies

As Windows creates backups at given periods of time, a victim is advised to address relevant restore points. Unfortunately, the method cannot apply unless the System Restore had been enabled prior to the invasion. Please also note the recovery returns files as saved before the time associated with the restore point addressed.

  • Previous Versions dialog to target individual files
    One can open Properties for any file. The menu has a tab called Previous Versions. It indicates versions of a file that have been backed up.
    To make use of the feature, right-click an affected file and choose Properties in the drop-down list. Proceed with clicking the above-mentioned tab. You can opt between the Copy or Restore procedures, the former enabling to copy the item into the location specified by the user.

test properties

shadow explorer

Backups and removing remaining traces of Erebus ransomware

Prevention is the best cure. If you stick to making regular reserve copies of your data and store those outside your operating system, the impacts by the ransomware are very limited. However, prior to copying the data from backups into the system hit by Erebus encryptor, make sure the removal of this virus has completed.

Your manual removal attempts may kill the ransomware in general. In most of the cases, some remnants manage to survive and are still capable of causing a significant damage. Please apply a reliable anti-malware scanner to detect and remove, if applicable, any remaining infections.

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