How To Delete ProposalCrypt Ransomware : Removal Steps and Prevention Tips

Research Report on ProposalCrypt Ransomware

 

ProposalCrypt Ransomware is named just after the file ‘proposal.doc_________.exe’ which is used to drop the malware inside the targeted system. Such strange name of the file is purposely made by the cyber criminals in order to make it easier for the system users to double-click and launch the malicious payload of this nasty ransomware virus. The deceptive way to hide .exe file format is the only trait of the note that can be attributed to malware. Moreover, the RMV security investigators didn’t find any new features in this ransomware that computer users find in common crypto malware virus.

ProposalCrypt Ransomware : Equipped with Open-source Cipher

The malware uses a customized version of AES-256 cipher which is released as a open-source. Although, the same cipher is used by the organization to protect shareware and prevent the machine users from obtaining proprietary code. The encryption process is secure and the decryption is impossible without having proper decryptor tool. Security analysts have found samples of the ProposalCrypt Ransomware infection while looking into the threat which was submitted recently to the Google’s VirusTotal platform.

At the time of writing this article, many researchers agree that the malware is still under development and its developers uploaded a sample to VirusTotal in order to check if the ProposalCrypt Ransomware bypasses the detection from anti-virus and heuristic analysis. The initial release of this noxious virus is especially designed to target the most commonly used files and data containers for text documents, photos, presentations and databases. System files that are encrypted with a private key based on the computer parameters and placed ‘.crypted’ extension onto every encrypted files. Also, the Nemucod Ransomware virus uses the same extension, but there doesn’t appear to be a direct connection between these two threats.

Ransom Amount Demanded by ProposalCrypt Ransomware

Moreover, the ransomware has nothing to do with the weddings, but the price it demands for the decryption key is 1 Bitcoin (900 USD / 862 EURO) which might secure you a good suit for the wedding to attend to. Fortunately, the cyber security analysts found out the sample of this ransomware which was submitted to the VirusTotal is decipherable Although, it means that the compromised system users have no reason to consider paying th ransom money. RMV security experts identified that the ransomware infections such as ProposalCrypt Ransomware virus can evolve over time and tend to alter names and the extensions append to the encrypted files. Such type of threats can be distributed via spam emails and exploit kits. However, you can remove the malware by using credible anti-malware tool and recover system files by using the services like Dropbox and Google Drive.

Free Scan your Windows PC to detect Ransomware

 

Remove ProposalCrypt Ransomware From Your PC

Step 1: Remove ProposalCrypt Ransomware in Safe Mode with Command Prompt

• First of all disconnect your PC with network connection.
• Click restart button and keep pressing F8 key regularly while system restart.

• You will see “Windows Advanced Options Menu” on your computer screen.

• Select “Safe Mode with Command Prompt” and press Enter key.

• You must login your computer with Administrator account for full privilege.

• Once the Command Prompt appears then type rstrui.exe and press Enter

• Now follow the prompts on your screen to complete system restore.

Step 2: Remove ProposalCrypt Ransomware using MSConfig in Safe Mode:

• Power off your computer and restart again.
• While booting press the “F8 key” continuously to open “Windows Advanced Options Menu”.

• Use the arrow keys to select “Safe Mode” option and press Enter key.

• Once system get started go to Start menu. Type “msconfig” in the search box and launch the application.

• Go to the Startup tab and look for files from %AppData% or %Temp% folders using rundll32.exe. See an example below:

C:\Windows\System32\rundll32.exe C:\Users\username\appdata\local\temp\regepqzf.dll,H1N1

• Disable all the malicious entries and save the changes.
• Now restart your computer normally.

Step 3 : Kill Malicious Process Related To ProposalCrypt Ransomware

• Press Alt+Ctrl+Del buttons together.

• It will open the Task manager on your screen.
• Go to Process Tab and find ProposalCrypt Ransomware related process.
• Click the End Process Now button to stop the running process.

Step 4 : Remove ProposalCrypt Ransomware Virus From Registry Entry

• Press “Windows + R” key together to open Run Box.

• Type “regedit” and click OK button.

• Find and remove ProposalCrypt Ransomware related entries.

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnceEx

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\RunServices

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\RunServicesOnce

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run

HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run

HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Runonce

HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\RunServices

HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\RunServicesOnce

HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run

Now hopefully you have completely removed the ProposalCrypt Ransomware virus from your computer. If you are still get ransom message from the threat or unable to access your files, then it means that virus still remain into your computer. In such situation you don’t have any other option except removing this virus using any powerful malware removal tool.

Whereas if you have any backup of your infected or encrypted files, then you can also reinstall your Windows OS. This will erase all your files and data as along with the ProposalCrypt Ransomware infection. You will get a completely empty computer system with no files. Now you can use your backup to get your files. If you don’t have any backup then using malware removal tool is a better option for you.

If you have any query or question regarding your computer, then you can easily ask your problem to our experts. Go to the Ask Any Question page and get the answer for your query directly from out experts.