Overview

overview

7

Static

static

3

instaIIer.msi

windows10-2004-x64

7

instaIIer.msi

windows11-21h2-x64

7

Analysis

  • max time kernel
    149s
  • max time network
    149s
  • platform
    windows11-21h2_x64
  • resource
    win11-20260513-en
  • resource tags

    arch:x64arch:x86image:win11-20260513-enlocale:en-usos:windows11-21h2-x64systemwindows
  • submitted
    01/06/2026, 20:03

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General

  • Target
    instaIIer.msi
  • Size 27.7MB
  • Sample260601-ys3asaev6x
  • SHA256 515ffa8556340092703932a8b9519ce8193c9672bdd7ed44e21435ca6d2d7bdf
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
7/10
persistenceprivilege_escalationransomware

Malware Config

Signatures

  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 1 IoCs
  • Enumerates connected drives 3 TTPs 46 IoCs

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

  • Drops file in Windows directory 12 IoCs
  • Event Triggered Execution: Installer Packages 2 TTPs 1 IoCs
    persistenceprivilege_escalation
  • Checks SCSI registry key(s) 3 TTPs 5 IoCs

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

  • Checks processor information in registry 2 TTPs 48 IoCs

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

  • Detects videocard installed 1 TTPs 1 IoCs

    Uses WMIC.exe to determine videocard installed.

  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs
  • Uses Volume Shadow Copy service COM API

    The Volume Shadow Copy service is used to manage backups/snapshots.

    ransomware

Processes

  • C:\Windows\system32\msiexec.exe
    msiexec.exe /I C:\Users\Admin\AppData\Local\Temp\instaIIer.msi
    1⤵
    • Enumerates connected drives
    • Event Triggered Execution: Installer Packages
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    PID:5092
  • C:\Windows\system32\msiexec.exe
    C:\Windows\system32\msiexec.exe /V
    1⤵
    • Enumerates connected drives
    • Drops file in Windows directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4524
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:4652
      • C:\Windows\system32\cmd.exe
        cmd.exe /c "FlTKwbZLztKonk.cmd"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:3736
        • C:\Users\Admin\AppData\Local\NubBWt\HnMxwiXpQmePF.exe
          "HnMxwiXpQmePF.exe" "DbbZrVodjtLSNVDIPv.js"
          3⤵
          • Executes dropped EXE
          • Checks processor information in registry
          • Suspicious use of WriteProcessMemory
          PID:2896
          • C:\Users\Admin\AppData\Local\NubBWt\HnMxwiXpQmePF.exe
            C:\Users\Admin\AppData\Local\NubBWt\HnMxwiXpQmePF.exe C:\Users\Admin\AppData\Local\NubBWt\mpJQsgIZr.dat
            4⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Checks processor information in registry
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of WriteProcessMemory
            PID:5520
            • C:\Windows\system32\cmd.exe
              C:\Windows\system32\cmd.exe /d /s /c "wmic path win32_VideoController get name"
              5⤵
              • Suspicious use of WriteProcessMemory
              PID:4464
              • C:\Windows\System32\Wbem\WMIC.exe
                wmic path win32_VideoController get name
                6⤵
                • Detects videocard installed
                PID:3108
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      • Suspicious use of AdjustPrivilegeToken
      PID:3544

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

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          Downloads

          e584c09.rbs
          • Path C:\Config.Msi\e584c09.rbs
          • Size 9KB
          • SHA256 ccf1b0a0dd7e6ab12788072039ee3f3ed65077ee060abd6083e051c15bb2c479
          • MD5 SHA1 SHA512 SSDEEP TLSH
          Submit Download

          DbbZrVodjtLSNVDIPv.js
          • Path C:\Users\Admin\AppData\Local\NubBWt\DbbZrVodjtLSNVDIPv.js
          • Size 296KB
          • SHA256 d9da3f8e562dc7b1e6faa250cf02a2c21bc529f9ef66772689654409139ffa80
          • MD5 SHA1 SHA512 SSDEEP TLSH
          Submit Download

          FlTKwbZLztKonk.cmd
          • Path C:\Users\Admin\AppData\Local\NubBWt\FlTKwbZLztKonk.cmd
          • Size 81B
          • SHA256 1989a093fcada7101d1a7178476d9a0dfbbb157b17084dd1d72bc88481a02269
          • MD5 SHA1 SHA512 TLSH
          Submit Download

          mpJQsgIZr.dat
          • Path C:\Users\Admin\AppData\Local\NubBWt\mpJQsgIZr.dat
          • Size 2.4MB
          • SHA256 ee0a7c6344570e06867a110ec4b76028a60bdade2329306f163c341f7faf8ff6
          • MD5 SHA1 SHA512 SSDEEP TLSH
          Submit Download

          mpJQsgIZr.dat
          • Path C:\Users\Admin\AppData\Local\NubBWt\mpJQsgIZr.dat
          • Size 1.8MB
          • SHA256 72512f0eba788773f0f2d89794e989045afffb356bc31f6c9487b9f21d6cffa9
          • MD5 SHA1 SHA512 SSDEEP TLSH
          Submit Download

          package.json
          • Path C:\Users\Admin\AppData\Local\NubBWt\package.json
          • Size 191B
          • SHA256 57de7cc0c5665dd4bd3bc9d6f8db5746783fe5d03c6285e7fd96321b850d8d8d
          • MD5 SHA1 SHA512 TLSH
          Submit Download

          dtuss47nt899abpj.node
          • Path C:\Users\Admin\AppData\Local\Temp\dtuss47nt899abpj.node
          • Size 391KB
          • SHA256 38ef0a152e1ed4e43e117bbf75fceb39959b65af3243c6c774da3a7f9f19caed
          • MD5 SHA1 SHA512 SSDEEP TLSH
          Submit Download

          e584c08.msi
          • Path C:\Windows\Installer\e584c08.msi
          • Size 27.7MB
          • SHA256 515ffa8556340092703932a8b9519ce8193c9672bdd7ed44e21435ca6d2d7bdf
          • MD5 SHA1 SHA512 SSDEEP TLSH
          Submit Download

          metadata-2
          • Path \??\GLOBALROOT\Device\HarddiskVolumeShadowCopy2\System Volume Information\SPP\metadata-2
          • Size 24.6MB
          • SHA256 4d4df27ed0813be17cba2e8c7495e0151967f9d85565b2755696eeb42ad746b1
          • MD5 SHA1 SHA512 SSDEEP TLSH
          Submit Download

          {d048dabd-792c-4606-bc54-d3e99e33e665}_OnDiskSnapshotProp
          • Path \??\Volume{13ce4998-0000-0000-0000-d01200000000}\System Volume Information\SPP\OnlineMetadataCache\{d048dabd-792c-4606-bc54-d3e99e33e665}_OnDiskSnapshotProp
          • Size 6KB
          • SHA256 b0c392ae7bd939e6f5d3fe33718aa026420744e9f8c1f1b94f7ad0205a740dfc
          • MD5 SHA1 SHA512 SSDEEP TLSH
          Submit Download

          memory/5520-42-0x000002DE6B250000-0x000002DE6BD82000-memory.dmp
          Download

          memory/5520-48-0x000002DE6B250000-0x000002DE6BD82000-memory.dmp
          Download