General

  • Target
    MasonClient (2).exe
  • Size 631KB
  • Sample260718-cjnkdacy5j
  • SHA256 f4af738257661b3ca9783e17597f83568f300dc471b26e399ce9d85b1d3c7ffd
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Targets

    • Target
      MasonClient (2).exe
    • Size 631KB
    • SHA256 f4af738257661b3ca9783e17597f83568f300dc471b26e399ce9d85b1d3c7ffd
    • MD5 SHA1 SHA512 SSDEEP TLSH
    • Command and Scripting Interpreter: PowerShell

      Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

    • Executes dropped EXE

    • Prevents Microsoft Defender from scanning certain paths by adding an exclusion.

      Uses the Powershell Add-MpPreference cmdlet to exclude paths from being scanned by Microsoft Defender.

    • Hide Artifacts: Hidden Window

      Windows that would typically be displayed when an application carries out an operation can be hidden.

    • Indicator Removal: Clear Persistence

      Clear artifacts associated with previously established persistence like scheduletasks on a host.

    • Writes to the Master Boot Record (MBR)

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

    • Hide Artifacts: Hidden Files and Directories

MITRE ATT&CK Enterprise v16

Tasks