.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.

Drops startup file

Executes dropped EXE

Loads dropped DLL

Modifies file permissions

Reads user/profile data of local email clients

Email clients store some user data on disk where infostealers will often target it.

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.

Unexpected DNS network traffic destination

Network traffic to other servers than the configured DNS servers was detected on the DNS port.

Uses the VBS compiler for execution

Windows security modification

Accesses 2FA software files, possible credential harvesting

Accesses Microsoft Outlook profiles

Accesses cryptocurrency files/wallets, possible credential harvesting

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

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.

Maps connected drives based on registry

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

Suspicious use of NtSetInformationThreadHideFromDebugger

Suspicious use of SetThreadContext