General

  • Target

    https://cdn.discordapp.com/attachments/1185220135456346223/1228072527436320931/Movavi_Screen_Recorder_22.3.0.exe?ex=663d2bab&is=663bda2b&hm=8b9e11fb858db99800142b7f7d55623a94aa5c0ec5507d1ab36f68c12fbf35ae&

  • Sample

    240509-bpl33ach58

Malware Config

Targets

    • Target

      https://cdn.discordapp.com/attachments/1185220135456346223/1228072527436320931/Movavi_Screen_Recorder_22.3.0.exe?ex=663d2bab&is=663bda2b&hm=8b9e11fb858db99800142b7f7d55623a94aa5c0ec5507d1ab36f68c12fbf35ae&

    • Identifies VirtualBox via ACPI registry values (likely anti-VM)

    • Downloads MZ/PE file

    • Checks BIOS information in registry

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

    • 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

    • 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

    • 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

MITRE ATT&CK Enterprise v15

Tasks