Scarab ransomware harnessing Necurs botnet for its new surge

Scarab ransomware has been around for a while. The first surge of this infection dates back to the beginning of summer 2017. Since that time, the ransomware circulation was rather descending until after recently the Necurs botnet boosted it to a new level.
Necurs botnet is one of the most notorious spam networks. It has contributed to a number of malware, trojan, black marketing campaigns. Darknet forums offer the spam network for rent. Rumors have it the botnet holders do not operate most of the campaigns themselves. Indeed, you may find the malicious scheme to be involved in too great a number of stand-alone hacks. Odds are that in all those cases the malware operators rented out the botnet.
That is to say, Scarab ransomware distributors are most likely to run their malicious campaigns with the Necurs botnet on lease. This way or another, Scarab ransomware originate from the emails distributed by the spam network.



Scarab ransomware is not the first ransomware that harnesses the capacity of Necurs botnet. Locky, Jaff, and GlobeImposter are other strains reported to use the same network as a means of propagation.
An email by Necurs pretends to carry a scanned document attached. At least, its subject line may read ‘scanned from Canon’, ‘scanned from Epson’.

The attachment, in reality, is a 7Zip archive. Its unpacking generates a malicious VBS, which, in its turn, downloads and installs the Scarab ransomware itself. The VB Script contains Games of Thrones reference which is a common hallmark for Necurs botnet distributing encryption ransomware.
Scarab ransomware deploys its attack further by scanning the memory it can reach through the entry point. The infection, whenever possible, covers removable and network drives.
The scanning stage is followed by the encryption itself. The algorithm applied is strong enough to withstand any direct decryption attempts. The files thus encrypted get an extra extension, ‘. Scarab’. Unlike previous versions of the ransomware, this case retains the original name of the files affected. It is only that they get the suffix that basically indicates the file is no longer readable.
The infection issues its ransom note in TXT format. It opens this note immediately once created. The message does not disclose the ransom amount claimed. It says this information is to be made available upon in the follow-up communication. The victim is supposed to contact the crooks by email. The sooner the victim responds, the lesser is the sum to be requested, allegedly.
Bad news is that the invader disables Shadow Copies. This complicates the recovery. However, there are still workarounds in place. Follow the guidance below to get rid of Scarab encryption-for-ransom without any benefits to the crooks by harnessing the best practice provided by the security enthusiasts.

Automated cleanup to remove Scarab virus

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 Scarab 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

Scarab 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 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 Scarab 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.

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