General

  • Target
    1fcdd89d72733b81090ba61596f7f29a_JaffaCakes118
  • Size 1.2MB
  • Sample240702-sr6c6aydlf
  • SHA256 c633b3dbdbbc413271b097e9b653dcb090a3149554209380afb4d5b8f6c45a23
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • darkcomet

Botnet
  • Dyn

C2
  • rezausa.dyndns.org:3030

Mutex
  • DC_MUTEX-PGP3HDM

Attributes
  • InstallPath

    taskhost.exe

  • gencode

    JibjBsAteAR7

  • install

    true

  • offline_keylogger

    true

  • persistence

    true

  • reg_key

    MicroUpdate

Targets

    • Target
      1fcdd89d72733b81090ba61596f7f29a_JaffaCakes118
    • Size 1.2MB
    • SHA256 c633b3dbdbbc413271b097e9b653dcb090a3149554209380afb4d5b8f6c45a23
    • MD5 SHA1 SHA512 SSDEEP
    • Darkcomet

      DarkComet is a remote access trojan (RAT) developed by Jean-Pierre Lesueur.

    • Modifies WinLogon for persistence

    • Modifies firewall policy service

    • Windows security bypass

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

    • Sets file to hidden

      Modifies file attributes to stop it showing in Explorer etc.

    • Checks computer location settings

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

    • Deletes itself

    • 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

    • Windows security modification

    • Adds Run key to start application

    • Checks whether UAC is enabled

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks