File and Directory Permissions Modification

Adversaries may modify file or directory permissions to evade defenses.

Deletes itself

Modifies Watchdog functionality

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

Enumerates active TCP sockets

Gets active TCP sockets from /proc virtual filesystem.

Enumerates running processes

Discovers information about currently running processes on the system

Modifies init.d

Adds/modifies system service, likely for persistence.

Modifies systemd

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

Reads MAC address of network interface

Fetches the MAC address of active network interfaces. May be used to detect known values for hypervisors.

Write file to user bin folder

Modifies Bash startup script

Reads process memory

Read the memory of a process through the /proc virtual filesystem. This can be used to steal credentials.