File and Directory Permissions Modification

Adversaries may modify file or directory permissions to evade defenses.

Executes dropped EXE

Modifies Watchdog functionality

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

Creates a large amount of network flows

This may indicate a network scan to discover remotely running services.

Creates/modifies Cron job

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

Enumerates active TCP sockets

Gets active TCP sockets from /proc virtual filesystem.

Enumerates running processes

Discovers information about currently running processes on the system

Looks up external IP address via web service

Uses a legitimate IP lookup service to find the infected system's external IP.

Modifies init.d

Adds/modifies system service, likely for persistence.

Write file to user bin folder

Reads process memory

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