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You Should Know:
SSH-Stealer is a malicious tool designed to steal SSH credentials, including passwords and private keys. This tool employs smart keylogging capabilities to capture sensitive information, which can then be used by attackers to gain unauthorized access to systems.
Practice Verified Codes and Commands:
1. Detecting SSH-Stealer on Linux:
- Use `ps aux | grep ssh` to check for suspicious SSH processes.
- Monitor SSH logs with `tail -f /var/log/auth.log` for unusual login attempts.
2. Securing SSH on Linux:
- Disable root login by editing `/etc/ssh/sshd_config` and setting
PermitRootLogin no. - Use key-based authentication instead of passwords:
ssh-keygen -t rsa -b 4096 ssh-copy-id user@remote_host
- Change the default SSH port:
sudo nano /etc/ssh/sshd_config</li> </ul> <h1>Change the line: Port 22 to Port 2222 (or any other port)</h1> sudo systemctl restart sshd
3. Windows SSH Security:
- Use PowerShell to generate SSH keys:
ssh-keygen -t rsa -b 4096
- Restrict SSH access using Windows Firewall:
New-NetFirewallRule -DisplayName "SSH" -Direction Inbound -Protocol TCP -LocalPort 22 -Action Allow
4. Monitoring and Auditing:
- Use `fail2ban` to block brute force attacks:
sudo apt-get install fail2ban sudo systemctl enable fail2ban sudo systemctl start fail2ban
- Regularly update your system:
sudo apt-get update && sudo apt-get upgrade
What Undercode Say:
SSH-Stealer is a potent threat to both Linux and Windows systems. By employing keylogging techniques, it can bypass traditional security measures. To mitigate this risk, it’s crucial to implement robust security practices such as key-based authentication, disabling root login, and regularly monitoring SSH logs. Additionally, tools like `fail2ban` can help in blocking brute force attacks. Always ensure your systems are up-to-date with the latest security patches to protect against such vulnerabilities.
For more detailed information on securing SSH, visit OpenSSH Documentation.
References:
Reported By: Saad Ahla – Hackers Feeds
Extra Hub: Undercode MoN
Basic Verification: Pass ✅Join Our Cyber World:
- Use PowerShell to generate SSH keys:
