Fenrir is the encryption attack deployed by fake Abode Reader as a prevailing infection vector.
This does not exclude other infiltration options. Meanwhile, the campaign is quite off-type. Other pieces of ransomware typically resort to hacking computer system with fake files and via direct execution of malicious code from viral pages.
The encrypting malware also applies a brand new approach to affecting filenames. The file names get an extra extension. That is pretty common for viruses of its kind. However, Fenrir ransomware is the first to add a suffix that matches unique ID of the device affected. The suffix thus added includes ten opening digits of the hardware ID. The total length of the added extension is 18 characters. It serves as a unique identifier for every affected device.
Another offbeat noted by the researchers is that the trojan drops its ransom note in RTF format. That is quite unusual. Its counterparts stick to HTA, HTML, and TXT.
Fenrir ransom note
The infection does not require your system to reboot. It may, however, cause system halt or sudden restart as its installation may interfere with system processes.
An installed instance of the trojan would report to its remote server. The information indicates IP, system parameters, other general details. The ransomware may delay further action.
Sooner or later, Fenrir ransomware proceeds with its encryption payload. To ensure the encryption affects all target files, the infection detects any and all data carriers available on a target device. Whenever possible, the malware seizes the opportunity and propagates over the network to hack further machines. Therefore, removal of Fenrir encryption trojan is a critical requirement for your network safety.
The memory identification stage is followed by its scan for files of particular extensions. This rather aims at omitting certain file formats as most of the infection types used in the wild are subject to detection. The exemptions enable the system to survive for only one reason: the user is supposed to read the ransom note by the Fenrir ransomware.
That is how the notification works: the infection resets the desktop wallpaper to the alarm reading ‘ALL YOUR FILES HAVE BEEN LOCKED’. Further details are available from the ransom note dropped on the desktop. The filename is typically ransom.rtf. The ransom note specifies your ID and demands a ransom amounted to USD 125 to get the files unlocked. Actually, the ransomware has encrypted your data with AES algorithm. The encryption is strong enough to withstand any brute-forcing, but certain smart workarounds hopefully retrieve your data.
As a precaution, it is good to have regular backups. If the ransomware is on your device already now, you need to get rid of Fenrir trojan due to the network risks. Besides, the infection may repeat its encryption, even though you have paid the bitcoins demanded.
To this end, a detailed guidance for the removal of Fenrir encryption plague, including the recovery of data it has affected, is available below
Automated cleanup to remove Fenrir virus
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 Fenrir 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 Fenrir 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 Fenrir ransomware 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
Fenrir 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.
Backups and removing remaining traces of Fenrir 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 Fenrir ransomware, 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.