Analysis

  • max time kernel
    150s
  • max time network
    134s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260911-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    22/09/2026, 13:12

General

  • Target
    file.exe
  • Size 11.2MB
  • Sample260922-qflhhawcqg
  • SHA256 800e772f537565970a4d0873a91e631f0a74ebc354485df30e82865053ea2966
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Family: Defendnot

    Defendnot is a tool designed to disable Microsoft Defender.

  • Detects Defendnot 1 IoCs
  • Command and Scripting Interpreter: PowerShell 1 TTPs 3 IoCs

    Run Powershell and hide display window.

  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 2 IoCs
  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
  • Drops file in Program Files directory 2 IoCs
  • Drops file in Windows directory 8 IoCs
  • Executes a command shell one-liner 1 TTPs 1 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of WriteProcessMemory 10 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\explorer.exe
    explorer.exe /LOADSAVEDWINDOWS
    1⤵
    • Drops file in Program Files directory
    • Suspicious behavior: GetForegroundWindowSpam
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4980
    • C:\Users\Admin\AppData\Local\Temp\file.exe
      "C:\Users\Admin\AppData\Local\Temp\file.exe"
      2⤵
      • Drops file in Windows directory
      • Suspicious use of WriteProcessMemory
      PID:5956
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        powershell -Command Add-MpPreference -ExclusionPath C:\Users\Admin\AppData\Local\Microsoft
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:1852
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        powershell -Command Add-MpPreference -ExclusionPath C:\Windows
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:2156
      • C:\Windows\6PfmPbJy\defendnot-loader.exe
        C:\Windows\6PfmPbJy\defendnot-loader.exe --silent
        3⤵
        • Executes dropped EXE
        • Drops file in Windows directory
        • Suspicious use of WriteProcessMemory
        PID:3468
        • C:\Windows\SYSTEM32\Taskmgr.exe
          Taskmgr.exe
          4⤵
          • Loads dropped DLL
          PID:5052
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        powershell -WindowStyle Hidden -Command C:\Users\Admin\AppData\Local\Temp\dn-2558633592.ps1
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:4692
      • C:\Users\Admin\AppData\Local\Microsoft\updater_txWvRkgb.exe
        C:\Users\Admin\AppData\Local\Microsoft\updater_txWvRkgb.exe
        3⤵
        • Executes dropped EXE
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of WriteProcessMemory
        PID:5244
  • C:\Windows\6PfmPbJy\defendnot-loader.exe
    C:\Windows\6PfmPbJy\defendnot-loader.exe
    1⤵
    • Executes dropped EXE
    • Drops file in Windows directory
    • Suspicious use of WriteProcessMemory
    PID:4516
    • C:\Windows\SYSTEM32\Taskmgr.exe
      Taskmgr.exe
      2⤵
      • Loads dropped DLL
      PID:616
    • C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c pause
      2⤵
      • Executes a command shell one-liner
      PID:3420
  • C:\Program Files\Windows Defender\MpCmdRun.exe
    "C:\Program Files\Windows Defender\MpCmdRun.exe" -wdenable
    1⤵
    • Drops file in Windows directory
    PID:5636

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        StartupProfileData-NonInteractive

        • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
        • Size 1KB
        • SHA256 7c8bf5aed8f939218421e7a6a175d0620aeb675d302b42c66b502f4415ad9d98
        • MD5 SHA1 SHA512 TLSH

        StartupProfileData-NonInteractive

        • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
        • Size 1KB
        • SHA256 3122bb6da954dc4a07f27f1fb71f77f57f8a7491719f8bc1b4e65962b5f3bbc5
        • MD5 SHA1 SHA512 TLSH

        updater_txWvRkgb.exe

        • Path C:\Users\Admin\AppData\Local\Microsoft\updater_txWvRkgb.exe
        • Size 714KB
        • SHA256 55fcccc9c9b8a0546234f9aa2929a21baadcb409d81e6eb92824d9f8a1192f69
        • MD5 SHA1 SHA512 SSDEEP TLSH

        __PSScriptPolicyTest_whckwzm4.t1c.ps1

        • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_whckwzm4.t1c.ps1
        • Size 60B
        • SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
        • MD5 SHA1 SHA512 TLSH

        dn-2558633592.ps1

        • Path C:\Users\Admin\AppData\Local\Temp\dn-2558633592.ps1
        • Size 2KB
        • SHA256 3888ffb268a0251bf49d7b140349006359e457a6e823e1d742da0d3057994578
        • MD5 SHA1 SHA512 TLSH

        ctx.bin

        • Path C:\Windows\6PfmPbJy\ctx.bin
        • Size 132B
        • SHA256 cf8c05d4e7620cd4ba0a049f96978e9fec37ef4bab51720053cf318a66670014
        • MD5 SHA1 SHA512

        defendnot-loader.exe

        • Path C:\Windows\6PfmPbJy\defendnot-loader.exe
        • Size 581KB
        • SHA256 f57a4dd3bd3ce82eaf6d7143e837b3fa59a0accdac76fd3dc053433efdd50e5e
        • MD5 SHA1 SHA512 SSDEEP TLSH

        defendnot.dll

        • Path C:\Windows\6PfmPbJy\defendnot.dll
        • Size 426KB
        • SHA256 b0870e105c7ad37fb0bdcb9305279b2943810d55300e8721eb64bdaa588cc84e
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/1852-11-0x000002AA7A430000-0x000002AA7A4E2000-memory.dmp

        memory/1852-16-0x00007FFDCD620000-0x00007FFDCDFC4000-memory.dmp

        memory/1852-7-0x00007FFDCD620000-0x00007FFDCDFC4000-memory.dmp

        memory/1852-10-0x000002AA7A410000-0x000002AA7A42E000-memory.dmp

        memory/1852-5-0x00007FFDCD620000-0x00007FFDCDFC4000-memory.dmp

        memory/1852-12-0x000002AA7A200000-0x000002AA7A20A000-memory.dmp

        memory/1852-13-0x00007FFDCD620000-0x00007FFDCDFC4000-memory.dmp

        memory/1852-14-0x00007FFDCD620000-0x00007FFDCDFC4000-memory.dmp

        memory/1852-15-0x00007FFDCD620000-0x00007FFDCDFC4000-memory.dmp

        memory/1852-6-0x00007FFDCD620000-0x00007FFDCDFC4000-memory.dmp

        memory/1852-18-0x00007FFDCD620000-0x00007FFDCDFC4000-memory.dmp

        memory/1852-17-0x00007FFDCD620000-0x00007FFDCDFC4000-memory.dmp

        memory/1852-20-0x00007FFDCD620000-0x00007FFDCDFC4000-memory.dmp

        memory/1852-21-0x000002AA79909000-0x000002AA7990F000-memory.dmp

        memory/1852-22-0x00007FFDCD620000-0x00007FFDCDFC4000-memory.dmp

        memory/1852-4-0x000002AA798D0000-0x000002AA798F2000-memory.dmp

        memory/1852-3-0x00007FFDCD620000-0x00007FFDCDFC4000-memory.dmp

        memory/1852-0-0x00007FFDCD7AF000-0x00007FFDCD7B0000-memory.dmp

        memory/2156-35-0x00007FFDCD620000-0x00007FFDCDFC4000-memory.dmp

        memory/2156-30-0x00007FFDCD620000-0x00007FFDCDFC4000-memory.dmp

        memory/2156-31-0x00007FFDCD620000-0x00007FFDCDFC4000-memory.dmp

        memory/2156-32-0x00007FFDCD620000-0x00007FFDCDFC4000-memory.dmp

        memory/2156-33-0x00007FFDCD620000-0x00007FFDCDFC4000-memory.dmp

        memory/2156-34-0x00007FFDCD620000-0x00007FFDCDFC4000-memory.dmp

        memory/2156-29-0x00007FFDCD620000-0x00007FFDCDFC4000-memory.dmp

        memory/2156-36-0x00007FFDCD620000-0x00007FFDCDFC4000-memory.dmp

        memory/2156-37-0x00007FFDCD620000-0x00007FFDCDFC4000-memory.dmp

        memory/2156-28-0x00007FFDCD620000-0x00007FFDCDFC4000-memory.dmp

        memory/2156-24-0x00007FFDCD620000-0x00007FFDCDFC4000-memory.dmp

        memory/2156-23-0x00007FFDCD620000-0x00007FFDCDFC4000-memory.dmp

        memory/2156-40-0x00007FFDCD620000-0x00007FFDCDFC4000-memory.dmp

        memory/2156-41-0x00007FFDCD620000-0x00007FFDCDFC4000-memory.dmp

        memory/2156-43-0x00007FFDCD620000-0x00007FFDCDFC4000-memory.dmp

        memory/4980-75-0x0000000003A70000-0x0000000003AF3000-memory.dmp

        memory/4980-81-0x0000000003A70000-0x0000000003AF3000-memory.dmp

        memory/4980-67-0x0000000003A70000-0x0000000003AF3000-memory.dmp

        memory/4980-69-0x0000000002A90000-0x0000000002A91000-memory.dmp

        memory/4980-66-0x0000000003A70000-0x0000000003AF3000-memory.dmp

        memory/4980-77-0x0000000003A70000-0x0000000003AF3000-memory.dmp

        memory/4980-88-0x0000000003A70000-0x0000000003AF3000-memory.dmp

        memory/4980-89-0x0000000003A70000-0x0000000003AF3000-memory.dmp

        memory/4980-91-0x0000000003A70000-0x0000000003AF3000-memory.dmp

        memory/4980-87-0x0000000003A70000-0x0000000003AF3000-memory.dmp

        memory/4980-85-0x0000000003A70000-0x0000000003AF3000-memory.dmp

        memory/4980-68-0x0000000003A70000-0x0000000003AF3000-memory.dmp

        memory/4980-83-0x0000000003A70000-0x0000000003AF3000-memory.dmp

        memory/4980-82-0x0000000003A70000-0x0000000003AF3000-memory.dmp

        memory/4980-97-0x0000000003A70000-0x0000000003AF3000-memory.dmp

        memory/4980-96-0x0000000003A70000-0x0000000003AF3000-memory.dmp

        memory/4980-95-0x0000000003A70000-0x0000000003AF3000-memory.dmp

        memory/4980-93-0x0000000003A70000-0x0000000003AF3000-memory.dmp

        memory/4980-92-0x0000000003A70000-0x0000000003AF3000-memory.dmp

        memory/4980-78-0x0000000003A70000-0x0000000003AF3000-memory.dmp

        memory/4980-79-0x0000000003A70000-0x0000000003AF3000-memory.dmp

        memory/4980-76-0x0000000003A70000-0x0000000003AF3000-memory.dmp

        memory/4980-99-0x0000000003A70000-0x0000000003AF3000-memory.dmp