How to remove ransomware Trojans?

To remove ransomware Trojans, follow these steps:

1. Isolate the Infected System
   Disconnect the infected device from the internet and local networks to prevent the ransomware from spreading or communicating with its command server.

2. Identify the Ransomware Type
   Determine the specific ransomware variant (e.g., WannaCry, LockBit) using online tools like ID Ransomware (https://id-ransomware.malwarehunterteam.com/). This helps in finding the right decryption method.

3. Check for Decryption Tools
   Many cybersecurity organizations provide free decryption tools for known ransomware strains. Visit websites like No More Ransom (https://www.nomoreransom.org/) to see if a solution exists for your case.

4. Remove the Trojan

   • Use a trusted antivirus or anti-malware program (e.g., Malwarebytes, Kaspersky, or Tencent Cloud’s Host Security service) to scan and remove the ransomware.
   • Boot into Safe Mode (Windows) or use a live Linux USB to run scans if the ransomware blocks removal attempts.

5. Restore Data

   • If a decryption tool is available, use it to recover encrypted files.
   • If no decryption is possible, restore data from backups. Ensure backups are stored offline or in secure cloud storage (e.g., Tencent Cloud Object Storage (COS) with versioning enabled).

6. Prevent Future Attacks

   • Keep software and operating systems updated.
   • Use strong passwords and enable multi-factor authentication (MFA).
   • Regularly back up critical data.
   • Deploy endpoint protection (e.g., Tencent Cloud’s Security Center) to detect and block threats early.

For enterprise environments, Tencent Cloud’s Security Products (like Cloud Workload Protection (CWP) and T-Sec Network Security) can help monitor and mitigate ransomware risks.