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Analysis

  • max time kernel
    150s
  • max time network
    133s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20250314-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20250314-enlocale:en-usos:windows10-2004-x64system
  • submitted
    19/03/2025, 23:39

General

  • Target

    9e9fb1553b565387cf9f2477db8c566da1a865ecc1fd08329dd9d8141ec8ca8a.js

  • Size

    5.3MB

  • MD5

    b2ffa18d6a6bf9de5ccc65b8ffbeae72

  • SHA1

    b553680c5718fbfcb2ab72db5e19c7e378577130

  • SHA256

    9e9fb1553b565387cf9f2477db8c566da1a865ecc1fd08329dd9d8141ec8ca8a

  • SHA512

    0fba66e93610553df29da04ef2e171787815a8f3c0d6f4040140724a6319500c3cd10bd9cf0f4f646d4baca85dc7b7082d24367e5ff944efda8e184241d1e80d

  • SSDEEP

    49152:Gl3VnOgewfmWm/RD/s+LfHQPl3VnOgewfmWm/RD/s+LfHQPl3VnOgewfmWm/RD/N:GTBTBTBTk

Malware Config

Signatures

  • GootLoader

    JavaScript loader known for delivering other families such as Gootkit and Cobaltstrike.

  • Gootloader family
  • Blocklisted process makes network request 4 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Command and Scripting Interpreter: JavaScript 1 TTPs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies registry class 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 10 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

Processes

  • C:\Windows\system32\wscript.exe
    wscript.exe C:\Users\Admin\AppData\Local\Temp\9e9fb1553b565387cf9f2477db8c566da1a865ecc1fd08329dd9d8141ec8ca8a.js
    1⤵
      PID:436
    • C:\Windows\system32\wscript.EXE
      C:\Windows\system32\wscript.EXE OPTO-M~1.JS
      1⤵
      • Checks computer location settings
      • Suspicious use of WriteProcessMemory
      PID:4420
      • C:\Windows\System32\cscript.exe
        "C:\Windows\System32\cscript.exe" "OPTO-M~1.JS"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1632
        • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
          powershell
          3⤵
          • Blocklisted process makes network request
          • Modifies registry class
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:4036

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_lwuznlfm.qa3.ps1

      Filesize

      60B

      MD5

      d17fe0a3f47be24a6453e9ef58c94641

      SHA1

      6ab83620379fc69f80c0242105ddffd7d98d5d9d

      SHA256

      96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

      SHA512

      5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

    • C:\Users\Admin\AppData\Roaming\Microsoft\OPTO-M~1.JS

      Filesize

      39.3MB

      MD5

      b764aa0e75918269a27c915d638004e7

      SHA1

      2c932da446f6319f96d744255cfd8fa15e0853f5

      SHA256

      1a79bab5e2f28a10b616ddf4dc059145cf62f061b06c5d2cde5e99e0496ae531

      SHA512

      ae7e6fa53ed33345adbdabb8fcc04e4ebbbdcceb1879a84b355922908bcf7bff738390ae688819eeec40e9496b495931db8cf79840a13b01ff3b736c019f8b58

    • memory/4036-9-0x000001415B1E0000-0x000001415B202000-memory.dmp

      Filesize

      136KB

    • memory/4036-13-0x000001415B360000-0x000001415B3A4000-memory.dmp

      Filesize

      272KB

    • memory/4036-14-0x000001415B780000-0x000001415B7F6000-memory.dmp

      Filesize

      472KB

    • memory/4036-15-0x000001415B9C0000-0x000001415B9EA000-memory.dmp

      Filesize

      168KB

    • memory/4036-16-0x000001415B9C0000-0x000001415B9E4000-memory.dmp

      Filesize

      144KB