Analysis

  • max time kernel
    148s
  • max time network
    129s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260911-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    30/09/2026, 14:57

General

  • Target
    kisa.exe
  • Size 1.1MB
  • Sample260930-sbmacat1as
  • SHA256 66cd6867af5a3c076f82ee2835039367abf76f73828e80a713ab43851a2bd676
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Family: DonutLoader

    DonutLoader is a position-independent code that enables in-memory execution of VBScript, JScript, EXE, DLL files and dotNET assemblies.

  • Detects DonutLoader 2 IoCs
  • Command and Scripting Interpreter: PowerShell 1 TTPs 3 IoCs

    Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

  • Creates a file in the Startup directory 1 TTPs 1 IoCs

    A file was written to a Windows startup folder. Files in these directories are executed automatically when a user logs on or an application initializes.

  • Executes dropped EXE 2 IoCs
  • Reads user/profile data of web browsers 3 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Adds Run key to start application 2 TTPs 3 IoCs
  • Enumerates connected drives 3 TTPs 3 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Looks up external IP address via web service 1 TTPs 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Suspicious use of NtSetInformationThreadHideFromDebugger 1 TTPs 4 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Executes a command shell one-liner 1 TTPs 2 IoCs

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

  • Reads the TCP/IP host and domain name from the registry 1 TTPs 2 IoCs

    The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.

  • Checks processor information in registry 2 TTPs 2 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 10 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\kisa.exe
    "C:\Users\Admin\AppData\Local\Temp\kisa.exe"
    1⤵
    • Creates a file in the Startup directory
    • Adds Run key to start application
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Reads the TCP/IP host and domain name from the registry
    • Checks processor information in registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4180
    • C:\Program Files\Google\Chrome\Application\chrome.exe
      "C:\Program Files\Google\Chrome\Application\chrome.exe"
      2⤵
        PID:4808
      • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
        "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"
        2⤵
          PID:3124
        • C:\Windows\System32\cmd.exe
          "C:\Windows\System32\cmd.exe" /c powershell -C "Add-MpPreference -ExclusionExtension '.exe' -EA 0"
          2⤵
          • Executes a command shell one-liner
          • Suspicious use of WriteProcessMemory
          PID:3176
          • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
            powershell -C "Add-MpPreference -ExclusionExtension '.exe' -EA 0"
            3⤵
            • Command and Scripting Interpreter: PowerShell
            • Enumerates connected drives
            • Suspicious use of AdjustPrivilegeToken
            PID:3304
        • C:\Users\Admin\AppData\Local\MpDefenderCoreFolder\CoreWorker_kVWUPGNUOYvPizT.exe
          "C:\Users\Admin\AppData\Local\MpDefenderCoreFolder\CoreWorker_kVWUPGNUOYvPizT.exe"
          2⤵
          • Executes dropped EXE
          • Adds Run key to start application
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:4884
          • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
            "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -NoProfile -ExecutionPolicy Bypass -Command " $action = New-ScheduledTaskAction -Execute 'C:\Users\Admin\AppData\Local\MpDefenderCoreFolder\CoreWorker_kVWUPGNUOYvPizT.exe' $trigger = New-ScheduledTaskTrigger -AtLogOn Register-ScheduledTask -Action $action -Trigger $trigger -TaskName 'CoreWorker_kVWUPGNUOYvPizT-8218' -RunLevel Highest "
            3⤵
            • Command and Scripting Interpreter: PowerShell
            • Enumerates connected drives
            • Suspicious use of AdjustPrivilegeToken
            PID:5060
          • C:\Windows\System32\cmd.exe
            "C:\Windows\System32\cmd.exe" /c powershell -Command "Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\MpDefenderCoreFolder'"
            3⤵
            • Executes a command shell one-liner
            • Suspicious use of WriteProcessMemory
            PID:2696
            • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
              powershell -Command "Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\MpDefenderCoreFolder'"
              4⤵
              • Command and Scripting Interpreter: PowerShell
              • Enumerates connected drives
              • Suspicious use of AdjustPrivilegeToken
              PID:5988
      • C:\Program Files\Google\Chrome\Application\140.0.7339.81\elevation_service.exe
        "C:\Program Files\Google\Chrome\Application\140.0.7339.81\elevation_service.exe"
        1⤵
          PID:3756
        • C:\Program Files (x86)\Microsoft\Edge\Application\139.0.3405.125\elevation_service.exe
          "C:\Program Files (x86)\Microsoft\Edge\Application\139.0.3405.125\elevation_service.exe"
          1⤵
            PID:2604
          • C:\Users\Admin\AppData\Local\MpDefenderCoreFolder\CoreWorker_kVWUPGNUOYvPizT.exe
            C:\Users\Admin\AppData\Local\MpDefenderCoreFolder\CoreWorker_kVWUPGNUOYvPizT.exe
            1⤵
            • Executes dropped EXE
            PID:4192

          Network

                MITRE ATT&CK Enterprise v16

                Replay Monitor

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                Downloads

                StartupProfileData-NonInteractive

                • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
                • Size 1KB
                • SHA256 95d800beb83751fe5d74e6f83e7c37e8dabfa27d2df83bee899021cb11de0b5b
                • MD5 SHA1 SHA512 TLSH

                StartupProfileData-NonInteractive

                • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
                • Size 1KB
                • SHA256 e56f4a38e0c60f0196c589e1952198368a10927e65ff24d1476ffafc489657f4
                • MD5 SHA1 SHA512 TLSH

                CoreWorker_kVWUPGNUOYvPizT.exe

                • Path C:\Users\Admin\AppData\Local\MpDefenderCoreFolder\CoreWorker_kVWUPGNUOYvPizT.exe
                • Size 13KB
                • SHA256 5428a612d41663ce5761d29bef169daf2a625f694cc41cc0de3c4f784e80c3ea
                • MD5 SHA1 SHA512 SSDEEP TLSH

                __PSScriptPolicyTest_whaw0t0c.n2c.ps1

                • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_whaw0t0c.n2c.ps1
                • Size 60B
                • SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
                • MD5 SHA1 SHA512 TLSH

                memory/3124-30-0x00000140F7F30000-0x00000140F7F40000-memory.dmp

                memory/3304-61-0x000001DD7F870000-0x000001DD7F87A000-memory.dmp

                memory/3304-60-0x000001DD19C60000-0x000001DD19D12000-memory.dmp

                memory/3304-59-0x000001DD19C40000-0x000001DD19C5E000-memory.dmp

                memory/3304-51-0x000001DD7F890000-0x000001DD7F8B2000-memory.dmp

                memory/4180-44-0x00007FFDC78A0000-0x00007FFDC8244000-memory.dmp

                memory/4180-36-0x00007FFDC78A0000-0x00007FFDC8244000-memory.dmp

                memory/4180-12-0x000000001B590000-0x000000001B606000-memory.dmp

                memory/4180-13-0x00007FFDC78A0000-0x00007FFDC8244000-memory.dmp

                memory/4180-14-0x00007FFDC78A0000-0x00007FFDC8244000-memory.dmp

                memory/4180-15-0x00007FFDC78A0000-0x00007FFDC8244000-memory.dmp

                memory/4180-16-0x00007FFDC78A0000-0x00007FFDC8244000-memory.dmp

                memory/4180-17-0x000000001B710000-0x000000001BC38000-memory.dmp

                memory/4180-18-0x00007FFDC78A0000-0x00007FFDC8244000-memory.dmp

                memory/4180-19-0x00007FFDC78A0000-0x00007FFDC8244000-memory.dmp

                memory/4180-20-0x00007FFDC78A0000-0x00007FFDC8244000-memory.dmp

                memory/4180-21-0x00007FFDC78A0000-0x00007FFDC8244000-memory.dmp

                memory/4180-22-0x00007FFDC78A0000-0x00007FFDC8244000-memory.dmp

                memory/4180-23-0x00007FFDC78A0000-0x00007FFDC8244000-memory.dmp

                memory/4180-24-0x000000001BF00000-0x000000001C14B000-memory.dmp

                memory/4180-25-0x00007FFDC78A0000-0x00007FFDC8244000-memory.dmp

                memory/4180-26-0x000000001C6F0000-0x000000001C93A000-memory.dmp

                memory/4180-28-0x000000001BC60000-0x000000001BC72000-memory.dmp

                memory/4180-2-0x00007FFDC7A2F000-0x00007FFDC7A30000-memory.dmp

                memory/4180-10-0x00007FFDC78A0000-0x00007FFDC8244000-memory.dmp

                memory/4180-3-0x000000001B2B0000-0x000000001B3C2000-memory.dmp

                memory/4180-32-0x000000001B140000-0x000000001B190000-memory.dmp

                memory/4180-33-0x00007FFDC78A0000-0x00007FFDC8244000-memory.dmp

                memory/4180-34-0x00007FFDC78A0000-0x00007FFDC8244000-memory.dmp

                memory/4180-35-0x00007FFDC78A0000-0x00007FFDC8244000-memory.dmp

                memory/4180-11-0x000000001B3C0000-0x000000001B582000-memory.dmp

                memory/4180-38-0x00007FFDC78A0000-0x00007FFDC8244000-memory.dmp

                memory/4180-39-0x00007FFDC78A0000-0x00007FFDC8244000-memory.dmp

                memory/4180-37-0x00007FFDC78A0000-0x00007FFDC8244000-memory.dmp

                memory/4180-40-0x00007FFDC78A0000-0x00007FFDC8244000-memory.dmp

                memory/4180-42-0x00007FFDC78A0000-0x00007FFDC8244000-memory.dmp

                memory/4180-41-0x00007FFDC78A0000-0x00007FFDC8244000-memory.dmp

                memory/4180-43-0x00007FFDC78A0000-0x00007FFDC8244000-memory.dmp

                memory/4180-1-0x0000000000920000-0x0000000000A34000-memory.dmp

                memory/4180-45-0x00007FFDC78A0000-0x00007FFDC8244000-memory.dmp

                memory/4180-9-0x00007FFDC78A0000-0x00007FFDC8244000-memory.dmp

                memory/4180-8-0x0000000002560000-0x0000000002561000-memory.dmp

                memory/4180-7-0x00007FFDC78A0000-0x00007FFDC8244000-memory.dmp

                memory/4180-6-0x00007FFDC78A0000-0x00007FFDC8244000-memory.dmp

                memory/4180-5-0x00007FFDC78A0000-0x00007FFDC8244000-memory.dmp

                memory/4180-63-0x00007FFDC78A0000-0x00007FFDC8244000-memory.dmp

                memory/4180-64-0x00007FFDC78A0000-0x00007FFDC8244000-memory.dmp

                memory/4180-4-0x00007FFDC78A0000-0x00007FFDC8244000-memory.dmp

                memory/4180-79-0x00007FFDC78A0000-0x00007FFDC8244000-memory.dmp

                memory/4808-31-0x000001D245850000-0x000001D24586E000-memory.dmp

                memory/4808-29-0x000001D245790000-0x000001D2457A0000-memory.dmp

                memory/4884-78-0x0000019837B60000-0x0000019837B6A000-memory.dmp

                memory/5060-105-0x0000018D5CD70000-0x0000018D5CE22000-memory.dmp

                memory/5060-107-0x0000018D5CE60000-0x0000018D5CE7E000-memory.dmp