Analysis

  • max time kernel
    92s
  • max time network
    93s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    03/02/2024, 16:03

General

  • Target
    8cc0676f832a381d0c3036158f80f47d.exe
  • Size 313KB
  • Sample240203-thdgfsdba9
  • SHA256 5fc8ba9c1f838b3267fe4e6d3a6ffff4337da920da349f66253a792b2ffed817
  • 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.

  • Installs/modifies Browser Helper Object 2 TTPs 4 IoCs

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

  • Enumerates physical storage devices 1 TTPs

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

  • NSIS installer 4 IoCs
  • Modifies registry class 63 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs
  • System policy modification 1 TTPs 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\8cc0676f832a381d0c3036158f80f47d.exe
    "C:\Users\Admin\AppData\Local\Temp\8cc0676f832a381d0c3036158f80f47d.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4996
    • C:\Users\Admin\AppData\Local\Temp\7zS42B6.tmp\setup.exe
      .\setup.exe /s
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Installs/modifies Browser Helper Object
      • Modifies registry class
      • System policy modification
      PID:3936

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        uninstall.exe

        • Path C:\ProgramData\wxDfast\uninstall.exe
        • Size 46KB
        • SHA256 03c965d0bd9827a978ef4080139533573aa800c9803599c0ce91da48506ad8f6
        • MD5 SHA1 SHA512 SSDEEP

        chrome.manifest

        • Path C:\Users\Admin\AppData\Local\Temp\7zS42B6.tmp\[email protected]\chrome.manifest
        • Size 114B
        • SHA256 cba16d85c86259ed8591babdf6510c66b4070535c4f579f3f9d85479e1babbd6
        • MD5 SHA1 SHA512

        indexeddb.js

        • Path C:\Users\Admin\AppData\Local\Temp\7zS42B6.tmp\[email protected]\content\indexeddb.js
        • Size 1KB
        • SHA256 d6434ce526398041ab6db9c24275a736e359d0dfb03037536fb9805cc04b2c91
        • MD5 SHA1 SHA512

        jquery.js

        • Path C:\Users\Admin\AppData\Local\Temp\7zS42B6.tmp\[email protected]\content\jquery.js
        • Size 91KB
        • SHA256 3739b485ac39b157caa066b883e4d9d3f74c50beff0b86cd8a24ce407b179a23
        • MD5 SHA1 SHA512 SSDEEP

        jsext.js

        • Path C:\Users\Admin\AppData\Local\Temp\7zS42B6.tmp\[email protected]\content\jsext.js
        • Size 6KB
        • SHA256 f7751b1df5489568f84db2ad47c1d34dafef04e3464b9d5faac05123249853c8
        • MD5 SHA1 SHA512 SSDEEP

        lsdb.js

        • Path C:\Users\Admin\AppData\Local\Temp\7zS42B6.tmp\[email protected]\content\lsdb.js
        • Size 1KB
        • SHA256 e2c3477577a51aab2cb0155198c0aafea50f0a885306c38afbdda02e1890c49a
        • MD5 SHA1 SHA512

        prfdb.js

        • Path C:\Users\Admin\AppData\Local\Temp\7zS42B6.tmp\[email protected]\content\prfdb.js
        • Size 1KB
        • SHA256 2ef6a05c231964ef9fa6b9a8e789cc5902ae636781dd28e55b222d20bf5e4262
        • MD5 SHA1 SHA512

        sqlite.js

        • Path C:\Users\Admin\AppData\Local\Temp\7zS42B6.tmp\[email protected]\content\sqlite.js
        • Size 1KB
        • SHA256 8fe8852c4afead08e952fa940bdb15bf4e59e5826108785a000218a8ca6365e9
        • MD5 SHA1 SHA512

        wx.xul

        • Path C:\Users\Admin\AppData\Local\Temp\7zS42B6.tmp\[email protected]\content\wx.xul
        • Size 228B
        • SHA256 5759f46f577899c7086a350bff27300f1ebfb458dfa5c038f8478bafc5ce6da6
        • MD5 SHA1 SHA512

        install.rdf

        • Path C:\Users\Admin\AppData\Local\Temp\7zS42B6.tmp\[email protected]\install.rdf
        • Size 677B
        • SHA256 b4793bfaeee565f769c8c7b79fc450f76f1b582652fd7c44f55ac988eddf0f45
        • MD5 SHA1 SHA512

        background.html

        • Path C:\Users\Admin\AppData\Local\Temp\7zS42B6.tmp\background.html
        • Size 5KB
        • SHA256 a7bd0b3ad29af51dcc1cfc76d08568fca140b45761661ff454e3ea3b828605f6
        • MD5 SHA1 SHA512 SSDEEP

        bhoclass.dll

        • Path C:\Users\Admin\AppData\Local\Temp\7zS42B6.tmp\bhoclass.dll
        • Size 137KB
        • SHA256 7bf09b5c2a9b6348227199c1b3951b57907ca6a5c215a04ad8d5e43232f5b562
        • MD5 SHA1 SHA512 SSDEEP

        content.js

        • Path C:\Users\Admin\AppData\Local\Temp\7zS42B6.tmp\content.js
        • Size 386B
        • SHA256 530e646918c1fc9eef79ffbc773eacf98cd1a9ca86bd0f95d30b890bc2625241
        • MD5 SHA1 SHA512

        jknejfamchbmekljeifgmiiopojkmnfi.crx

        • Path C:\Users\Admin\AppData\Local\Temp\7zS42B6.tmp\jknejfamchbmekljeifgmiiopojkmnfi.crx
        • Size 37KB
        • SHA256 c93a63fdcb15cb0fea29d68d8d2c8912030beaa0c61c138de37838785af87aad
        • MD5 SHA1 SHA512 SSDEEP

        settings.ini

        • Path C:\Users\Admin\AppData\Local\Temp\7zS42B6.tmp\settings.ini
        • Size 599B
        • SHA256 27cae1dc80e884e7de2aa8bb3796a91616f62618324b08f556cefae409f32bbc
        • MD5 SHA1 SHA512

        setup.exe

        • Path C:\Users\Admin\AppData\Local\Temp\7zS42B6.tmp\setup.exe
        • Size 61KB
        • SHA256 15c0e4fd6091cda70fa308ea5ee956996f6eb23d24e44700bd5c74bf111cf2aa
        • MD5 SHA1 SHA512 SSDEEP