File and Directory Permissions Modification

Adversaries may modify file or directory permissions to evade defenses.

Deletes Audit logs

Deletes logs related to the Linux Audit framework.

Deletes system logs

Deletes log file which contains global system messages. Adversaries may delete system logs to minimize their footprint.

Executes dropped EXE

Flushes firewall rules

Flushes/ disables firewall rules inside the Linux kernel.

Modifies Watchdog functionality

Malware like Mirai modifies the Watchdog to prevent it restarting an infected system.

Unexpected DNS network traffic destination

Network traffic to other servers than the configured DNS servers was detected on the DNS port.

Checks mountinfo of local process

Checks mountinfo of running processes which indicate if it is running in chroot jail.

Creates/modifies Cron job

Cron allows running tasks on a schedule, and is commonly used for malware persistence.

Deletes log files

Deletes log files on the system.

Enumerates active TCP sockets

Gets active TCP sockets from /proc virtual filesystem.

Enumerates running processes

Discovers information about currently running processes on the system