General

  • Target
    2023-FILES-MY1040-w2-IRS-letter-1099r_PDF.zip
  • Size 747KB
  • Sample240208-ajb58sbe54
  • SHA256 892259f6f9ac19e8375b35e6838c0c4f17052041306f199eb59b6857fe07bedf
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Targets

    • Target
      2023-FILES-MY1040-w2-IRS-letter-1099r_PDF.jar
    • Size 761KB
    • SHA256 1b7560d64e9fc2a468cc3e251669dd05df851f6432b8f3c373f06bd6aaf82d31
    • MD5 SHA1 SHA512 SSDEEP
    • Ratty

      Ratty is an open source Java Remote Access Tool.

    • Ratty Rat payload

    • Drops startup file

    • Loads dropped DLL

    • Modifies file permissions

    • Adds Run key to start application

MITRE ATT&CK Enterprise v15

Tasks