General

  • Target
    DupeInjectorV4.5.bat
  • Size 12.5MB
  • Sample240802-yh74aaserf
  • SHA256 c0fb1a0aa966a7dc839dba656af70a418ec83e5a4bf198847e98463b6a83d466
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • quasar

Version
  • 1.0.0.0

Botnet
  • v2.2.3 | SeroXen

C2
  • infallible-water-17742.pktriot.net:22270

Mutex
  • 96ae75a5-01d3-49c2-89ea-5383e9558b63

Attributes
  • encryption_key

    8D3F0F423E546AEF9412DC2001F9C1DAB11CB7F5

  • install_name

    .exe

  • log_directory

    $sxr-Logs

  • reconnect_delay

    3000

Targets

    • Target
      DupeInjectorV4.5.bat
    • Size 12.5MB
    • SHA256 c0fb1a0aa966a7dc839dba656af70a418ec83e5a4bf198847e98463b6a83d466
    • MD5 SHA1 SHA512 SSDEEP
    • Quasar RAT

      Quasar is an open source Remote Access Tool.

    • Quasar payload

    • Suspicious use of NtCreateProcessExOtherParentProcess

    • Suspicious use of NtCreateUserProcessOtherParentProcess

    • Checks computer location settings

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

    • Deletes itself

    • Executes dropped EXE

    • Indicator Removal: Clear Windows Event Logs

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

    • Loads dropped DLL

    • Hide Artifacts: Hidden Window

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

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks