File and Directory Permissions Modification

Adversaries may modify file or directory permissions to evade defenses.

Deletes system logs

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

OS Credential Dumping

Adversaries may attempt to dump credentials to use it in password cracking.

Adds a user to the system

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.

Deletes log files

Deletes log files on the system.

Modifies systemd

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

Modifies Bash startup script