Shadow File Copied for Offline Password Cracking
This rule detects attempts to copy the /etc/shadow file, which contains hashed user passwords, for offline password cracking. It specifically looks for the string "cat /etc/shadow" in TCP traffic destined for the home network on any port, indicating a potential exfiltration attempt or preparation for credential access. The rule is designed to alert on established connections where this specific command is observed.
Suricata
