File and Directory Permissions Modification

Adversaries may modify file or directory permissions to evade defenses.

Flushes firewall rules

Flushes/ disables firewall rules inside the Linux kernel.

Loads a kernel module

Loads a Linux kernel module, potentially to achieve persistence

Attempts to change immutable files

Modifies inode attributes on the filesystem to allow changing of immutable files.

Creates/modifies Cron job

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

Creates/modifies environment variables

Creating/modifying environment variables is a common persistence mechanism.

Disables SELinux

Disables SELinux security module.

Enumerates running processes

Discovers information about currently running processes on the system

Modifies init.d

Adds/modifies system service, likely for persistence.

Modifies rc script

Adding/modifying system rc scripts is a common persistence mechanism.

Modifies systemd

Adds/ modifies systemd service files. Likely to achieve persistence.

Writes file to system bin folder

Modifies Bash startup script