Analysis

  • max time kernel
    133s
  • max time network
    102s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    02/06/2024, 10:20

General

  • Target
    8dbd73458721b5f6f19538924707a153_JaffaCakes118.exe
  • Size 1.0MB
  • Sample240602-mc7d1sah97
  • SHA256 11f4d60b4e4b9c511ffb7b1321a57cd9fb0939d94134bf84d317c18e5d893543
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Drops Chrome extension 1 IoCs
  • Installs/modifies Browser Helper Object 2 TTPs 4 IoCs

    BHOs are DLL modules which act as plugins for Internet Explorer.

  • Modifies Internet Explorer settings 1 TTPs 4 IoCs
  • Modifies registry class 64 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs
  • System policy modification 1 TTPs 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\8dbd73458721b5f6f19538924707a153_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\8dbd73458721b5f6f19538924707a153_JaffaCakes118.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1856
    • C:\Users\Admin\AppData\Local\Temp\00294823\JY.exe
      "C:\Users\Admin\AppData\Local\Temp/00294823/JY.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Drops Chrome extension
      • Installs/modifies Browser Helper Object
      • Modifies Internet Explorer settings
      • Modifies registry class
      • System policy modification
      PID:4312

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        JY.dat

        • Path C:\Users\Admin\AppData\Local\Temp\00294823\JY.dat
        • Size 3KB
        • SHA256 00ca88d0353540866621e0a67fe8841917ea222888672b41cf242619558671f0
        • MD5 SHA1 SHA512

        JY.exe

        • Path C:\Users\Admin\AppData\Local\Temp\00294823\JY.exe
        • Size 334KB
        • SHA256 f54a6814ac06c70ef5b738eca4855e49039783d96b70ba1ae461bd90877e53b5
        • MD5 SHA1 SHA512 SSDEEP

        R.dll

        • Path C:\Users\Admin\AppData\Local\Temp\00294823\R.dll
        • Size 258KB
        • SHA256 9900e517bfd4b39bd7af4bb360af52f6c95ef9b3e7ef36d2633485c58bef9a1a
        • MD5 SHA1 SHA512 SSDEEP

        R.tlb

        • Path C:\Users\Admin\AppData\Local\Temp\00294823\R.tlb
        • Size 2KB
        • SHA256 66fab808188a98ba49d99b723a181aa6626197d50bd2d5e15e076dcbc6fbb2cc
        • MD5 SHA1 SHA512

        R.x64.dll

        • Path C:\Users\Admin\AppData\Local\Temp\00294823\R.x64.dll
        • Size 319KB
        • SHA256 870c280ea861313edda0bd3950dc738ea68d006f315888d66023b54e5f98f0ea
        • MD5 SHA1 SHA512 SSDEEP

        FH.js

        • Path C:\Users\Admin\AppData\Local\Temp\00294823\fjpjpablgjndpkcifcnodopcfjhmmaco\FH.js
        • Size 5KB
        • SHA256 11da2a026da82a0ab00acdceb9a97187ed9971014ee045cd46ac45bf160d04da
        • MD5 SHA1 SHA512 SSDEEP

        background.html

        • Path C:\Users\Admin\AppData\Local\Temp\00294823\fjpjpablgjndpkcifcnodopcfjhmmaco\background.html
        • Size 139B
        • SHA256 37481a53f6b72d17ea27293a5d403e743465f760d142ce938713ea49cae66205
        • MD5 SHA1 SHA512

        content.js

        • Path C:\Users\Admin\AppData\Local\Temp\00294823\fjpjpablgjndpkcifcnodopcfjhmmaco\content.js
        • Size 197B
        • SHA256 fb01e87250ac9985ed08d97f2f99937a52998ea9faebdc88e4071d6517e1ea6b
        • MD5 SHA1 SHA512

        lsdb.js

        • Path C:\Users\Admin\AppData\Local\Temp\00294823\fjpjpablgjndpkcifcnodopcfjhmmaco\lsdb.js
        • Size 559B
        • SHA256 e3cf0049af8b9f6cb4f0223ccb8438f4b0c75863684c944450015868a0c45704
        • MD5 SHA1 SHA512

        manifest.json

        • Path C:\Users\Admin\AppData\Local\Temp\00294823\fjpjpablgjndpkcifcnodopcfjhmmaco\manifest.json
        • Size 509B
        • SHA256 9c1419d41d2915be9a069a50000da686849267df253b584cb56d53d022a114b8
        • MD5 SHA1 SHA512

        sqlite.js

        • Path C:\Users\Admin\AppData\Local\Temp\00294823\fjpjpablgjndpkcifcnodopcfjhmmaco\sqlite.js
        • Size 1KB
        • SHA256 6d1d44be1ae4973f766d617f8be39a70b959397b0b1816c3bba14904576f163e
        • MD5 SHA1 SHA512

        bootstrap.js

        • Path C:\Users\Admin\AppData\Local\Temp\00294823\[email protected]\bootstrap.js
        • Size 2KB
        • SHA256 a7dfea4bf7e1d46a8b8e64ccfb2cf35017e3a5b350eead26d6671254d2b3c46f
        • MD5 SHA1 SHA512

        chrome.manifest

        • Path C:\Users\Admin\AppData\Local\Temp\00294823\[email protected]\chrome.manifest
        • Size 96B
        • SHA256 8ebc878b8b3e7277d0109dd3d8f319d19028a71af02c3d5637e1be3e1dfa801e
        • MD5 SHA1 SHA512

        bg.js

        • Path C:\Users\Admin\AppData\Local\Temp\00294823\[email protected]\content\bg.js
        • Size 9KB
        • SHA256 fc2a3f0e4628624489cc7e1a9e34333c3c367d4d14a38b7fddde9c5b58bd878c
        • MD5 SHA1 SHA512 SSDEEP

        install.rdf

        • Path C:\Users\Admin\AppData\Local\Temp\00294823\[email protected]\install.rdf
        • Size 614B
        • SHA256 f2c5153e1eaf481769b2935711b00e90700d86616c78f533d4468e59ab7cba67
        • MD5 SHA1 SHA512