WannaRen Decrypt tool for East Asia
WannaRen Decruypt tool from Bitdefender
Bitdefender team released a decryption tool that enables victims of WannaRen ransomware to recover their files for free.
On August 19, Bitdefender announced that it had made a WannaRen decryption utility publicly available for download.
WannaRen initially spotted in April 2020, WannaRen is mostly spreading through websites offering “cracked” software, demanding ransoms of 0.05BTC (worth approximately $600 at the time of writing) This new decryptor works on all known versions of WannaRen ransomware.
The security firm urged victims of this ransomware to save the decryptor somewhere on their computer after completing the download process.
Once they click on the saved “BDWannaRenDecryptor.exe” file, they should click “Yes” and give the decryptor the permissions it needs to modify files on the infected device. They should then agree to the end user license agreement.
With a “test folder” containing pairs of encrypted/not-encrypted files, victims can instruct the tool to scan their entire machine for encrypted files as part of the recovery process.
Bitdefender also recommended that users select the “Backup files” option.
News of this decryption utility arrived several months after WannaRen first attracted the attention of the security community.
WannaRen revealed that the ransomware had originated from Hidden Shadow, a digital crime organization which has a history of exploiting EternalBlue for the purpose of moving laterally on infected networks and distributing banking trojans.
The security firm found that WannaRen arrived with a PowerShelld downloader containing this same propagation method.
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It’s not always possible for security researchers to develop a decryption tool for a ransomware family. Sometimes, the code reveals no apparent weaknesses that allow for the creation of such a utility.
Bitdefender WannaRen decrypt tool will serve tens of thousands of victims among both home consumers and local Chinese and Taiwanese companies.
"Thanks Bitdefender"
