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.

Executes dropped EXE

Flushes firewall rules

Flushes/ disables firewall rules inside the Linux kernel.

Loads a kernel module

Loads a Linux kernel module, potentially to achieve persistence

Writes DNS configuration

Writes data to DNS resolver config file.

Attempts to change immutable files

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

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.

Deletes log files

Deletes log files on the system.

Disables AppArmor

Disables AppArmor security module.

Disables SELinux

Disables SELinux security module.

Enumerates running processes

Discovers information about currently running processes on the system

Modifies rc script

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

Reads hardware information

Accesses system info like serial numbers, manufacturer names etc.

Write file to user bin folder

Writes file to system bin folder

UPX packed file

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