File and Directory Permissions Modification

Adversaries may modify file or directory permissions to evade defenses.

Executes dropped EXE

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.

Enumerates running processes

Discovers information about currently running processes on the system

Reads hardware information

Accesses system info like serial numbers, manufacturer names etc.

Removes the immutable protection flag from a file

Uses chattr to remove the immutable flag from a file, allowing previously write-protected files to be modified or deleted.

Security Software Discovery

Adversaries may attempt to discover installed security software and its configurations.

UPX packed file

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