General

  • Target
    https://wdl1.pcfg.cache.wpscdn.com/wpsdl/wpsoffice/onlinesetup/distsrc/200.1095/wpsinst/wps_office_inst.exe
  • Sample261012-j4mbdattfw

Malware Config

Targets

    • Target
      https://wdl1.pcfg.cache.wpscdn.com/wpsdl/wpsoffice/onlinesetup/distsrc/200.1095/wpsinst/wps_office_inst.exe
    • Family: PrivateLoader

      PrivateLoader is a downloader sold as a pay-per-install malware distribution service.

    • Downloads MZ/PE file

    • Executes dropped EXE

    • Writes a Windows system DLL name to a user directory

      A module named after a system DLL outside System32 can be loaded instead of the real one by a program searching that directory.

    • Writes to the Master Boot Record (MBR)

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

MITRE ATT&CK Enterprise v16

Tasks