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

Indicator Removal: Clear Windows Event Logs

Clear Windows Event Logs to hide the activity of an intrusion.

Loads dropped DLL

Reads WinSCP keys stored on the system

Tries to access WinSCP stored sessions.

Reads user/profile data of web browsers

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

Stops running service(s)

Windows security modification

Accesses Microsoft Outlook profiles

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

Contacts third-party web service commonly abused for C2

Legitimate web (hosting) services can be abused by malware authors to host malware or C2s.

Enumerates connected drives

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

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.

Drops file in System32 directory

Hide Artifacts: Hidden Files and Directories