Overview

overview

7

Static

static

3

QuasarTool...er.exe

windows10-2004-x64

7

QuasarTool...er.exe

windows11-ltsc_2024-x64

7

Analysis

  • max time kernel
    150s
  • max time network
    125s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260911-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    11/10/2026, 16:13

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General

  • Target
    QuasarTool/Quasar Loader.exe
  • Size 8.6MB
  • Sample261011-tpecbsda35
  • SHA256 b630d8a764e028da3e2186de4cf7e99240d93d5aeb18df114017b20583016628
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
7/10
execution

Malware Config

Signatures

  • Loads dropped DLL 7 IoCs
  • Executes a command shell one-liner 1 TTPs 3 IoCs

    Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.

    execution
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of WriteProcessMemory 5 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\QuasarTool\Quasar Loader.exe
    "C:\Users\Admin\AppData\Local\Temp\QuasarTool\Quasar Loader.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4884
    • C:\Users\Admin\AppData\Local\Temp\QuasarTool\Quasar Loader.exe
      "C:\Users\Admin\AppData\Local\Temp\QuasarTool\Quasar Loader.exe"
      2⤵
      • Loads dropped DLL
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:4872
      • C:\Windows\system32\cmd.exe
        C:\Windows\system32\cmd.exe /c
        3⤵
        • Executes a command shell one-liner
        PID:2008
      • C:\Windows\system32\cmd.exe
        C:\Windows\system32\cmd.exe /c mode con: cols=40 lines=18
        3⤵
        • Executes a command shell one-liner
        • Suspicious use of WriteProcessMemory
        PID:4968
        • C:\Windows\system32\mode.com
          mode con: cols=40 lines=18
          4⤵
            PID:4720
        • C:\Windows\system32\cmd.exe
          C:\Windows\system32\cmd.exe /c cls
          3⤵
          • Executes a command shell one-liner
          PID:2712

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

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          Downloads

          VCRUNTIME140.dll
          • Path C:\Users\Admin\AppData\Local\Temp\_MEI000013142\VCRUNTIME140.dll
          • Size 117KB
          • SHA256 052ad6a20d375957e82aa6a3c441ea548d89be0981516ca7eb306e063d5027f4
          • MD5 SHA1 SHA512 SSDEEP TLSH
          Submit Download

          _bz2.pyd
          • Path C:\Users\Admin\AppData\Local\Temp\_MEI000013142\_bz2.pyd
          • Size 85KB
          • SHA256 d28c3dd1c22bfb8a6e8a6a9c2359842b797d08e878ecb7805f60e86a45589d11
          • MD5 SHA1 SHA512 SSDEEP TLSH
          Submit Download

          _ctypes.pyd
          • Path C:\Users\Admin\AppData\Local\Temp\_MEI000013142\_ctypes.pyd
          • Size 139KB
          • SHA256 25d9b0be550d428fecc697ca20450343a7c3ce77c9f5283e9aecfd188d609250
          • MD5 SHA1 SHA512 SSDEEP TLSH
          Submit Download

          _lzma.pyd
          • Path C:\Users\Admin\AppData\Local\Temp\_MEI000013142\_lzma.pyd
          • Size 157KB
          • SHA256 5f7003f9f0256e36351ca2810b3485db28579b08e4d1d65f6f211fcd1136f395
          • MD5 SHA1 SHA512 SSDEEP TLSH
          Submit Download

          _zstd.pyd
          • Path C:\Users\Admin\AppData\Local\Temp\_MEI000013142\_zstd.pyd
          • Size 491KB
          • SHA256 262aea62a994920daf152a10bdc0ca83a8b1c0874e71db23734862431de182c6
          • MD5 SHA1 SHA512 SSDEEP TLSH
          Submit Download

          base_library.zip
          • Path C:\Users\Admin\AppData\Local\Temp\_MEI000013142\base_library.zip
          • Size 1.3MB
          • SHA256 03a5eb97dcb04dd819cfe2bc41a85257364aca06effda40b3bcb533e40110c8a
          • MD5 SHA1 SHA512 SSDEEP TLSH
          Submit Download

          libffi-8.dll
          • Path C:\Users\Admin\AppData\Local\Temp\_MEI000013142\libffi-8.dll
          • Size 38KB
          • SHA256 eff52743773eb550fcc6ce3efc37c85724502233b6b002a35496d828bd7b280a
          • MD5 SHA1 SHA512 SSDEEP TLSH
          Submit Download

          python314.dll
          • Path C:\Users\Admin\AppData\Local\Temp\_MEI000013142\python314.dll
          • Size 6.5MB
          • SHA256 fde89cdb5c2d08ae65de7ef4abca1876c93ba3796002f5ac0bf7e4d4f5a94da0
          • MD5 SHA1 SHA512 SSDEEP TLSH
          Submit Download