Resubmissions

24/06/2024, 04:41

240624-fbkejaxdpc

03/04/2024, 18:51

240403-xhlplshe4x10

03/04/2024, 18:47

240403-xfehhshg7910

Analysis

  • max time kernel
    12s
  • max time network
    12s
  • platform
    windows10-1703_x64
  • resource
    win10-20240221-en
  • resource tags

    arch:x64arch:x86image:win10-20240221-enlocale:en-usos:windows10-1703-x64system
  • submitted
    03/04/2024, 18:51

General

  • Target
    Tax_documents_JPG.jar
  • Size 429KB
  • Sample240403-xhlplshe4x
  • SHA256 811de6570cf64d430a2c0af6fd2ce4214e61d5fd6f7adaae6d1bf4791b4d11e0
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • Ratty

    Ratty is an open source Java Remote Access Tool.

  • Ratty Rat payload 1 IoCs
  • Modifies file permissions 1 TTPs 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Program Files (x86)\Common Files\Oracle\Java\javapath\java.exe
    java -jar C:\Users\Admin\AppData\Local\Temp\Tax_documents_JPG.jar
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:3088
    • C:\Windows\system32\icacls.exe
      C:\Windows\system32\icacls.exe C:\ProgramData\Oracle\Java\.oracle_jre_usage /grant "everyone":(OI)(CI)M
      2⤵
      • Modifies file permissions
      PID:1924
    • C:\Windows\SYSTEM32\wscript.exe
      wscript C:\Users\Admin\rideaegdny.js
      2⤵
        PID:4200
        • C:\Program Files\Java\jre-1.8\bin\javaw.exe
          "C:\Program Files\Java\jre-1.8\bin\javaw.exe" -jar "C:\Users\Admin\AppData\Roaming\lbuomnbhhq.txt"
          3⤵
            PID:2400

      Network

            MITRE ATT&CK Enterprise v15

            Replay Monitor

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            Downloads

            3903daac9bc4a3b7.timestamp

            • Path C:\ProgramData\Oracle\Java\.oracle_jre_usage\3903daac9bc4a3b7.timestamp
            • Size 46B
            • SHA256 e2467b53bb795a94df67d4cd885ea1c33ef1b0084a21c9db76694811f0e31ed7
            • MD5 SHA1 SHA512

            lbuomnbhhq.txt

            • Path C:\Users\Admin\AppData\Roaming\lbuomnbhhq.txt
            • Size 332KB
            • SHA256 248a66690549491b314b81e4375b6ad856866183df59ee9e1bf3872c5eb1689b
            • MD5 SHA1 SHA512 SSDEEP

            rideaegdny.js

            • Path C:\Users\Admin\rideaegdny.js
            • Size 720KB
            • SHA256 1058268338b671fdad899ed250b792ce2e587fc2686375f1d931dca2a8c6a7c8
            • MD5 SHA1 SHA512 SSDEEP

            memory/3088-4-0x000001F243680000-0x000001F244680000-memory.dmp

            memory/3088-12-0x000001F241E50000-0x000001F241E51000-memory.dmp

            memory/3088-15-0x000001F241E50000-0x000001F241E51000-memory.dmp