General

  • Target

    http://btcusa365.com

  • Sample

    230612-1g731aee3z

Malware Config

Targets

    • Target

      http://btcusa365.com

    • Detect jar appended to MSI

    • Downloads MZ/PE file

    • Drops file in Drivers directory

    • Looks for VMWare Tools registry key

    • Looks for VMWare drivers on disk

    • Sets service image path in registry

    • Checks computer location settings

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

    • Executes dropped EXE

    • Loads dropped DLL

    • Registers COM server for autorun

    • 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.

    • Enumerates connected drives

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

    • Writes to the Master Boot Record (MBR)

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

    • Detected potential entity reuse from brand microsoft.

    • Drops file in System32 directory

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Registry Run Keys / Startup Folder

3
T1060

Bootkit

1
T1067

Defense Evasion

Virtualization/Sandbox Evasion

2
T1497

Modify Registry

3
T1112

Discovery

Query Registry

7
T1012

Virtualization/Sandbox Evasion

2
T1497

File and Directory Discovery

1
T1083

System Information Discovery

6
T1082

Peripheral Device Discovery

2
T1120

Tasks