CryptTool.

Short bio

CryptTool. is Malwarebytes’ detection name for a category of riskware that is used as a tool for encrypting or obfusticating files.

Type and source of infection

Riskware, in general, is a detection for items that are not strictly malicious but pose some sort of risk for the user in another way. The use of "crypt tool" applications may be illegal in some countries.

CryptTool detections are typically downloaded from less reputable sites, and the files may be backdoored. Users may also get malware instead of the promised encryption tool.

Protection

Malwarebytes protects users from items detected as CryptTool. by using real-time protection.

Remediation

Malwarebytes can detect and remove crypttools without further user interaction.

1. Please download Malwarebytes to your desktop.
2. Double-click MBSetup.exe and follow the prompts to install the program.
3. When your Malwarebytes for Windows installation completes, the program opens to the Welcome to Malwarebytes screen.
4. Click on the Get started button.
5. Click Scan to start a Threat Scan.
6. Click Quarantine to remove the found threats.
7. Reboot the system if prompted to complete the removal process.

Add an exclusion

Should users wish to keep this program and exclude it from being detected in future scans, they can add the program to the exclusions list. Here’s how to do it.

• Open Malwarebytes for Windows.
• Click the Detection History
• Click the Allow List
• To add an item to the Allow List, click Add.
• Select the exclusion type Allow a file or folder and use the Select a folder button to select the main folder for the software that you wish to keep.
• Repeat this for any secondary files or folder(s) that belong to the software.