GandCrab encryption-for-ransom deploys another wave of its attacks as public authorities and private security firms managed to suppress the opening one. The second wave does not differ much from the first; the essential novelty is the new remote server used to control the ransomware. This change stems from a sheer necessity as this has been the initial server that the Romanian cyber Police in cooperation with Europol managed to hack. The joint measure enabled release of the decryption keys. The keys required certain processing before their intended use. Private companies developed software able to ensure such a processing.
With the software and appropriate keys, the users concerned were able to decrypt their data for free.
The updated GandCrab (.crab) ransom virus relaunched the infection campaign at the beginning of March 2018. This infection interacts with its controllers via several servers, including politiaromana.bit and malwarehunterteam.bit . The names of above servers recognize the role of Romanian Police and the group of IT enthusiast in overcoming initial surge of the malware.
Meanwhile, GandCrab has not updated pattern of communication with those remote servers remaining true to TLD standard, a rather off-type version for DNS. This offers enhanced anonymity of the communication, obviously an important benefit for a cyber-criminal. Again, this failed to protect the hacker’s server from intervention by the authorities
GDCB is the extra extension added by the first iteration of the ransomware in question. The updated version adds GandCrab instead. The crucial change occurs inside the file as both versions of the malware encrypt the content of the files. The decryption keys are available from the malware’s remote server.
In its CRAB-Decrypt.txt the ransomware lays down what’s going on.
This redirects the users to the online payment platform that eventually demands and accepts the ransom payable in DASH. The amount varies but seems to be around USD 1000 to 1500.
Undoubtedly, the authorities maintain crackdown on the crime that might release the decryption keys from the hacker’s server. Paid decryption as proposed by the crooks is neither socially responsible nor verified solution.
Automated cleanup to remove .Crab 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 .Crab 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
.Crab 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 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 .Crab 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.