.NET Reactor proctector

Detects an executable protected by an unregistered version of Eziriz's .NET Reactor.

Checks BIOS information in registry

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

Checks computer location settings

Looks up country code configured in the registry, likely geofence.

Executes dropped EXE

Identifies Wine through registry keys

Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.

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.

Accesses cryptocurrency files/wallets, possible credential harvesting

Checks installed software on the system

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

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

Looks up external IP address via web service

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

Writes to the Master Boot Record (MBR)

Bootkits write to the MBR to gain persistence at a level below the operating system.

Suspicious use of NtSetInformationThreadHideFromDebugger

Suspicious use of SetThreadContext