Checks BIOS information in registry

BIOS information is often read in order to detect sandboxing environments.

Drops startup file

Executes dropped EXE

Loads dropped DLL

Reads data files stored by FTP clients

Tries to access configuration files associated with programs like FileZilla.

Reads user/profile data of web browsers

Infostealers often target stored browser data, which can include saved credentials etc.

UPX packed file

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

Windows security modification

Adds Run key to start application

Checks installed software on the system

Looks up Uninstall key entries in the registry to enumerate software on the system.

Checks whether UAC is enabled

Enumerates connected drives

Attempts to read the root path of hard drives other than the default C: drive.

Legitimate hosting services abused for malware hosting/C2

Manipulates WinMon driver.

Roottkits write to WinMon to hide PIDs from being detected.

Manipulates WinMonFS driver.

Roottkits write to WinMonFS to hide directories/files from being detected.

Drops file in System32 directory

Suspicious use of SetThreadContext