Analysis

  • max time kernel
    150s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    27/08/2024, 12:45

General

  • Target
    4f2846f0cd6bdf7a93b1fa0b34844414bd287367edf203ef206c90f4bf6147e4.js
  • Size 4.0MB
  • Sample240827-py3ztsshjm
  • SHA256 4f2846f0cd6bdf7a93b1fa0b34844414bd287367edf203ef206c90f4bf6147e4
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • GootLoader

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

  • Blocklisted process makes network request 1 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 4 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\4f2846f0cd6bdf7a93b1fa0b34844414bd287367edf203ef206c90f4bf6147e4.js
    1⤵
      PID:840
    • C:\Windows\system32\wscript.EXE
      C:\Windows\system32\wscript.EXE CULTUR~1.JS
      1⤵
      • Checks computer location settings
      • Suspicious use of WriteProcessMemory
      PID:1988
      • C:\Windows\System32\cscript.exe
        "C:\Windows\System32\cscript.exe" "CULTUR~1.JS"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:3400
        • 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:4496

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

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          Downloads

          __PSScriptPolicyTest_swpwd2ow.t2d.ps1

          • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_swpwd2ow.t2d.ps1
          • Size 60B
          • SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
          • MD5 SHA1 SHA512

          CULTUR~1.JS

          • Path C:\Users\Admin\AppData\Roaming\Microsoft\CULTUR~1.JS
          • Size 43.5MB
          • SHA256 bc71bfd085e89375dded036e65518df4f772dac440ef80de9aeebc3fd3b9ba14
          • MD5 SHA1 SHA512 SSDEEP

          memory/4496-3-0x000002182BF00000-0x000002182BF22000-memory.dmp

          memory/4496-13-0x00000218450F0000-0x0000021845134000-memory.dmp

          memory/4496-14-0x00000218453C0000-0x0000021845436000-memory.dmp

          memory/4496-15-0x0000021845640000-0x000002184566A000-memory.dmp

          memory/4496-16-0x0000021845640000-0x0000021845664000-memory.dmp