Today, Michael Gillespie noticed what appeared to be a new variant of the Crysis/Dharma Ransomware uploaded to his ID-Ransomware site. Jakub Kroustek then discovered some samples to confirm that it was indeed a new Dharma variant. This new version will append the .Bip extension to encrypted files. It is not known exactly how this variant is being distributed, but in the past Dharma is typically spread by hacking into Remote Desktop Services and manually installing the ransomware.

When the Bip ransomware variant is installed, it will scan a computer for data files and encrypt them. When encrypting a file it will append an extension in the format of .id-[id].[email].bip. For example, a file called test.jpg would be encrypted and renamed to test.jpg.id-BCBEF350.[Beamsell@qq.com].bip.

It should be noted that this ransomware will encrypt mapped network drives, shared virtual machine host drives,  and unmapped network shares. So it is important to make sure your network's shares are locked down so that only those who actually need access have permission.

You can see an example of a folder encrypted by the Bip Ransomware variant below.

Files encrypted with the Dharma Bip Ransomware Variant
Files encrypted with the Dharma Bip Ransomware Variant

When this variant encrypts a computer, it will also delete all of the shadow volume copes on the machine so that they can not be used to recover unencrypted files. It deletes them by running the vssadmin  delete shadows /all /quiet command.

This ransomware will also create two different ransom notes on the infected the computer. One is the Info.hta file, which is launched by an autorun when a user logs into the computer.

Dharma Bip Ransom Note
Dharma Bip Ransom Note

The other note is called FILES ENCRYPTED.txt and can be found on the desktop.

Bip Text Ransom Note
Bip Text Ransom Note

Both of these ransom notes contain instructions to contact Beamsell@qq.com in order to get payment instructions.

Finally, the ransomware will configure itself to automatically start when you login to Windows. This allows it to encrypt new files that are created since it was last executed.

It is not possible to decrypt the Dharma Bip Ransomware Variant

Unfortunately, at this time there is no way to decrypt files encrypted by the Bip Ransomware variant for free.

The only way to recover encrypted files is via a backup, or if you are incredibly lucky, through Shadow Volume Copies. Though Dharma does attempt to remove Shadow Volume Copies, in rare cases ransomware infections fail to do so for whatever reason. Due to this, if you do not have a viable backup, I always suggest people try as a last resort to restore encrypted files from Shadow Volume Copies as well.

For those who wish to discuss this ransomware or need support, you can use our dedicated Crysis Ransomware Help & Support Topic.

How to protect yourself from the Dharma Ransomware

In order to protect yourself from Dharma, or from any ransomware, it is important that you use good computing habits and security software. First and foremost, you should always have a reliable and tested backup of your data that can be restored in the case of an emergency, such as a ransomware attack.

As the Dharma Ransomware may be installed via hacked Remote Desktop services, it is very important to make sure its locked down correctly. This includes making sure that no computers running remote desktop services are connected directly to the Internet. Instead place computers running remote desktop behind VPNs so that they are only accessible to those who have VPN accounts on your network.

It is also important to setup proper account lockout policies so that it makes it difficult for accounts to be brute forced over Remote Desktop Services.

You should also have security software that incorporates behavioral detections to combat ransomware and not just signature detections or heuristics.  For example, Emsisoft Anti-Malware and Malwarebytes Anti-Malware both contain behavioral detection that can prevent many, if not most, ransomware infections from encrypting a computer.

Last, but not least, make sure you practice the following good online security habits, which in many cases are the most important steps of all:

  • Backup, Backup, Backup!
  • Do not open attachments if you do not know who sent them.
  • Do not open attachments until you confirm that the person actually sent you them,
  • Scan attachments with tools like VirusTotal.
  • Make sure all Windows updates are installed as soon as they come out! Also make sure you update all programs, especially Java, Flash, and Adobe Reader. Older programs contain security vulnerabilities that are commonly exploited by malware distributors. Therefore it is important to keep them updated.
  • Make sure you use have some sort of security software installed.
  • Use hard passwords and never reuse the same password at multiple sites.
  • If you are using Remote Desktop Services, do not connect it directly to the Internet. Instead make it accessibly only via a VPN.

For a complete guide on ransomware protection, you visit our How to Protect and Harden a Computer against Ransomware article.
 

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The Week in Ransomware - October 5th 2018 - Restaurant Shutdowns & Exploit Kits

The Week in Ransomware - September 28th 2018 - RDP and gandCrab

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IOCs

Hash:

SHA256: 208989df29236594c9d889d54b666041bc7df1d0b53cedd16e4f68636e036bb7

Associated Files:

%UserProfile%\AppData\Roaming\Info.hta
%UserProfile%\AppData\Roaming\[filename.exe]
FILES ENCRYPTED.txt

Associated Registry Entries:

HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run "filename.exe" = %UserProfile%\AppData\Roaming\filename.exe
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run "filename.exe" = %UserProfile%\AppData\Roaming\[filename.exe]
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run "mshta.exe "%UserProfile%\AppData\Roaming\Info.hta""  = mshta.exe "%UserProfile%\AppData\Roaming\Info.hta"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run "mshta.exe "C:\Windows\System32\Info.hta"" = "mshta.exe "C:\Windows\System32\Info.hta""

Bip Dharma Ransomware FILES ENCRYPTED.txt Ransom Note:

all your data has been locked us
You want to return?
write email Beamsell@qq.com

Bip Associated Emails:

Beamsell@qq.com

Bip Dharma Ransomware INFO.hta Ransom Note:

All your files have been encrypted!
All your files have been encrypted due to a security problem with your PC. If you want to restore them, write us to the e-mail Beamsell@qq.com
Write this ID in the title of your message BCBEF350
In case of no answer in 24 hours write us to theese e-mails:Beamsell@qq.com
You have to pay for decryption in Bitcoins. The price depends on how fast you write to us. After payment we will send you the decryption tool that will decrypt all your files. 
Free decryption as guarantee
Before paying you can send us up to 1 file for free decryption. The total size of files must be less than 1Mb (non archived), and files should not contain valuable information. (databases,backups, large excel sheets, etc.) 
How to obtain Bitcoins
The easiest way to buy bitcoins is LocalBitcoins site. You have to register, click 'Buy bitcoins', and select the seller by payment method and price. 
https://localbitcoins.com/buy_bitcoins 
Also you can find other places to buy Bitcoins and beginners guide here: 
http://www.coindesk.com/information/how-can-i-buy-bitcoins/ 
Attention!
Do not rename encrypted files. 
Do not try to decrypt your data using third party software, it may cause permanent data loss. 
Decryption of your files with the help of third parties may cause increased price (they add their fee to our) or you can become a victim of a scam.