File and Directory Permissions Modification

Adversaries may modify file or directory permissions to evade defenses.

Disables AppArmor Mandatory Access Control

Stops or disables AppArmor via systemctl, removing mandatory access control restrictions on process capabilities and file access.

Executes dropped EXE

Loads a kernel module

Loads a Linux kernel module, potentially to achieve persistence

Modifies the /etc/hosts DNS resolution file

Modifying the /etc/hosts name-resolution file changes IP routing, which can facilitate traffic hijacking or the blocking of (security update) endpoints.

Renames itself

Checks hardware identifiers (DMI)

Checks DMI information which indicate if the system is a virtual machine.

Creates/modifies Cron job

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

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.

Reads hardware information

Accesses system info like serial numbers, manufacturer names etc.

Write file to user bin folder

UPX packed file

Detects executables packed with UPX/modified UPX open source packer.