How to Defend Against Ransomware: A Live Fire Drill Workshop

Ransomware attacks are escalating, and organizations must be prepared to respond swiftly. The Virtual Ransomware Fire Drill Workshop by Druva offers hands-on simulations to test and improve incident response strategies.

You Should Know:

1. Ransomware Detection & Isolation

Use these commands to detect suspicious activity and isolate infected systems:

• Linux:

  Monitor for unusual file changes 
  sudo find / -type f -mtime -1 -exec ls -la {} \;
  
  Check for ransomware processes 
  ps aux | grep -E 'crypt|lock|ransom'
  
  Isolate a compromised machine from the network 
  sudo iptables -A INPUT -s <infected_IP> -j DROP 
  

• Windows:

  Scan for encrypted files 
  Get-ChildItem -Path C:\ -Recurse -File | Where-Object { $_.Extension -eq ".encrypted" }
  
  Block malicious IPs 
  New-NetFirewallRule -DisplayName "Block_Ransomware_IP" -Direction Inbound -RemoteAddress <attacker_IP> -Action Block 
  

2. Incident Response & Recovery

• Backup Verification:

  Check backup integrity (Linux) 
  sha256sum /backup/.tar.gz
  
  Restore from backup 
  tar -xvzf /backup/latest_backup.tar.gz -C /restore_path 
  

• Windows Shadow Copy Recovery:

  List shadow copies 
  vssadmin list shadows
  
  Restore files 
  vssadmin restore shadow /shadow=<ShadowCopyID> /path=C:\corrupted_folder 
  

3. Post-Attack Hardening

• Disable RDP (Common Attack Vector):

  Windows: Disable Remote Desktop 
  Set-ItemProperty -Path 'HKLM:\System\CurrentControlSet\Control\Terminal Server' -Name "fDenyTSConnections" -Value 1 
  

• Enable Linux Kernel Protections:

  Prevent unauthorized kernel modules 
  echo "install cramfs /bin/true" >> /etc/modprobe.d/hardening.conf 
  

What Undercode Say:

Ransomware is no longer a “what if” scenario—it’s a “when.” Proactive measures like backups, network segmentation, and real-time monitoring are critical. The Druva workshop provides actionable strategies, but organizations must also enforce strict access controls, patch management, and employee training.

Prediction:

AI-driven ransomware will soon automate target selection and encryption, making defense-in-depth strategies essential. Zero-trust architectures and behavioral analysis tools will become standard in enterprise security.

Expected Output:

• Workshop URL: Druva Ransomware Fire Drill
• Detection Scripts: Automated YARA rules for ransomware signatures.
• Recovery Playbook: Step-by-step IR checklist for SOC teams.

IT/Security Reporter URL:

Reported By: Malwaretech Activity – Hackers Feeds
Extra Hub: Undercode MoN
Basic Verification: Pass ✅

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