Analysis

  • max time kernel
    148s
  • max time network
    147s
  • platform
    windows11-21h2_x64
  • resource
    win11-20260911-en
  • resource tags

    arch:x64arch:x86image:win11-20260911-enlocale:en-usos:windows11-21h2-x64systemwindows
  • submitted
    24/09/2026, 14:44

General

  • Target
    setup_Z-_Mason_Street_Furniture_(Not_Supported_by_Group_IT).msi
  • Size 8.4MB
  • Sample260924-r4krjsfe22
  • SHA256 1571100ac7ed5c27e470225995828dd39e9760a6a03683ebf669658d15e0d18b
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Badlisted process makes network request 13 IoCs

    Network request originating from process or tool commonly abused by malware.

  • Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

    Powershell Invoke Web Request.

  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 24 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 System32 directory 6 IoCs
  • Drops file in Program Files directory 64 IoCs
  • Drops file in Windows directory 36 IoCs
  • Event Triggered Execution: Installer Packages 2 TTPs 1 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.

  • System Time Discovery 1 TTPs 4 IoCs

    Adversary may gather the system time and/or time zone settings from a local or remote system.

  • Checks SCSI registry key(s) 3 TTPs 5 IoCs

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

  • Modifies data under HKEY_USERS 64 IoCs
  • Modifies registry class 22 IoCs
  • Suspicious behavior: EnumeratesProcesses 34 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of WriteProcessMemory 13 IoCs
  • Uses Volume Shadow Copy service COM API

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

Processes

  • C:\Windows\system32\msiexec.exe
    msiexec.exe /I C:\Users\Admin\AppData\Local\Temp\setup_Z-_Mason_Street_Furniture_(Not_Supported_by_Group_IT).msi
    1⤵
    • Badlisted process makes network request
    • Enumerates connected drives
    • Event Triggered Execution: Installer Packages
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    PID:4896
  • C:\Windows\system32\msiexec.exe
    C:\Windows\system32\msiexec.exe /V
    1⤵
    • Enumerates connected drives
    • Drops file in Windows directory
    • Modifies data under HKEY_USERS
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3368
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:4776
    • C:\Windows\System32\MsiExec.exe
      C:\Windows\System32\MsiExec.exe -Embedding 0DE0C19C6832EAC2D1A5FDB2E7B1968C
      2⤵
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:904
      • C:\Windows\system32\rundll32.exe
        rundll32.exe "C:\Windows\Installer\MSIF7A9.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240711656 2 Atera.Agent.Installer.Msi.Ca!Atera.Agent.Installer.Msi.Ca.CustomActions.GenerateAgentId
        3⤵
        • Loads dropped DLL
        • Drops file in Windows directory
        • Suspicious use of AdjustPrivilegeToken
        PID:4000
      • C:\Windows\system32\rundll32.exe
        rundll32.exe "C:\Windows\Installer\MSIFB92.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240712609 6 Atera.Agent.Installer.Msi.Ca!Atera.Agent.Installer.Msi.Ca.CustomActions.ShouldContinueInstallation
        3⤵
        • Badlisted process makes network request
        • Loads dropped DLL
        • Drops file in Windows directory
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:472
      • C:\Windows\system32\rundll32.exe
        rundll32.exe "C:\Windows\Installer\MSIFFF8.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240713718 10 Atera.Agent.Installer.Msi.Ca!Atera.Agent.Installer.Msi.Ca.CustomActions.ReportMsiInstallStart
        3⤵
        • Badlisted process makes network request
        • Loads dropped DLL
        • Drops file in Windows directory
        • Suspicious use of AdjustPrivilegeToken
        PID:4476
      • C:\Windows\system32\rundll32.exe
        rundll32.exe "C:\Windows\Installer\MSI2E8.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240714468 15 Atera.Agent.Installer.Msi.Ca!Atera.Agent.Installer.Msi.Ca.CustomActions.DetectDotNetFrameworkRuntime
        3⤵
        • Loads dropped DLL
        • Drops file in Windows directory
        • System Time Discovery
        • Suspicious use of AdjustPrivilegeToken
        PID:5584
      • C:\Windows\system32\rundll32.exe
        rundll32.exe "C:\Windows\Installer\MSI3AF4.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240728875 31 Atera.Agent.Installer.Msi.Ca!Atera.Agent.Installer.Msi.Ca.CustomActions.ReportMsiInstallEnd
        3⤵
        • Badlisted process makes network request
        • Loads dropped DLL
        • Drops file in Windows directory
        PID:2132
    • C:\Windows\System32\MsiExec.exe
      C:\Windows\System32\MsiExec.exe -Embedding B2ECDB5640131955E2CB747E92E6A66C E Global\MSI0000
      2⤵
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:5600
      • C:\Program Files\ATERA Networks\AteraAgent\Agent\AteraAgent.exe
        "C:\Program Files\ATERA Networks\AteraAgent\Agent\AteraAgent.exe" init-settings --agent-id "a0601e4f-d8bb-4731-a04a-d17cb7eb6427" --account-id "i3Ni+EOALl4FvwJcQroVhbrtT8HcJh6nP8Bf2147VP4=" --account-agent-installation-id "caf5a032c867462fbf577bc454480d04" --environment "Production" --customer-id "289" --folder-id ""
        3⤵
        • Executes dropped EXE
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:5624
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        "powershell.exe" -ExecutionPolicy Bypass -NoProfile -Command "[Net.ServicePointManager]::SecurityProtocol=[Net.SecurityProtocolType]::Tls12;Invoke-WebRequest -Uri 'https://dot.net/v1/dotnet-install.ps1' -OutFile \"C:\Program Files\ATERA Networks\AteraAgent\Agent\dotnet-install.ps1\""
        3⤵
        • Badlisted process makes network request
        • Command and Scripting Interpreter: PowerShell
        • Modifies data under HKEY_USERS
        • Suspicious behavior: EnumeratesProcesses
        PID:3188
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        "powershell.exe" -ExecutionPolicy unrestricted -NoProfile -File "C:\Program Files\ATERA Networks\AteraAgent\Agent\dotnet-install.ps1" -Channel 8.0 -Runtime dotnet -InstallDir "C:\Program Files\ATERA Networks\AteraAgent\Agent\\.dotnet"
        3⤵
        • Badlisted process makes network request
        • Command and Scripting Interpreter: PowerShell
        • Drops file in Program Files directory
        • System Time Discovery
        • Modifies data under HKEY_USERS
        • Suspicious behavior: EnumeratesProcesses
        PID:2784
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Checks SCSI registry key(s)
    • Suspicious use of AdjustPrivilegeToken
    PID:3668
  • C:\Program Files\ATERA Networks\AteraAgent\Agent\AteraAgent.exe
    "C:\Program Files\ATERA Networks\AteraAgent\Agent\AteraAgent.exe"
    1⤵
    • Executes dropped EXE
    • Drops file in System32 directory
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • Modifies data under HKEY_USERS
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:5616
    • C:\Windows\system32\cmd.exe
      "cmd.exe" /c "C:\Program Files\ATERA Networks\AteraAgent\Agent\.dotnet\dotnet.exe" --list-runtimes
      2⤵
      • Executes a command shell one-liner
      • System Time Discovery
      • Suspicious use of WriteProcessMemory
      PID:5588
      • C:\Program Files\ATERA Networks\AteraAgent\Agent\.dotnet\dotnet.exe
        "C:\Program Files\ATERA Networks\AteraAgent\Agent\.dotnet\dotnet.exe" --list-runtimes
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • System Time Discovery
        PID:5632

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        e58f662.rbs

        • Path C:\Config.Msi\e58f662.rbs
        • Size 7KB
        • SHA256 dc12a4baf873b4cc81ecf70c07a3d551e791c19bd93619e83ee9c57f7edd354b
        • MD5 SHA1 SHA512 SSDEEP TLSH

        dotnet.exe

        • Path C:\Program Files\ATERA Networks\AteraAgent\Agent\.dotnet\dotnet.exe
        • Size 153KB
        • SHA256 111da7b604cd196b49167cfeecdaef4034b58cc7de71a91cbf9e162c9e8b0931
        • MD5 SHA1 SHA512 SSDEEP TLSH

        hostfxr.dll

        • Path C:\Program Files\ATERA Networks\AteraAgent\Agent\.dotnet\host\fxr\8.0.31\hostfxr.dll
        • Size 357KB
        • SHA256 4f5a0500cd2a2439b0d5edbf242950233aec4539ec9a5e7ba9b8a9b0079f63af
        • MD5 SHA1 SHA512 SSDEEP TLSH

        .settings.json

        • Path C:\Program Files\ATERA Networks\AteraAgent\Agent\.settings.json
        • Size 245B
        • SHA256 899830c1747aa3530dbb645905ad086f56b8f56742211a92f72633f7a43f897e
        • MD5 SHA1 SHA512 TLSH

        AteraAgent.exe

        • Path C:\Program Files\ATERA Networks\AteraAgent\Agent\AteraAgent.exe
        • Size 21.7MB
        • SHA256 40be79204b749b4fffa22339c056b43ef3624ddc213183a2579ce88dc8e148bf
        • MD5 SHA1 SHA512 SSDEEP TLSH

        agent.cert.pfx

        • Path C:\Program Files\ATERA Networks\AteraAgent\Agent\certificates\production\agent.cert.pfx
        • Size 2KB
        • SHA256 b0cd513450f7f5c6b6696569b3e8b24ceaf5d106d6002694e9b7433ac98b284c
        • MD5 SHA1 SHA512 TLSH

        dotnet-install.ps1

        • Path C:\Program Files\ATERA Networks\AteraAgent\Agent\dotnet-install.ps1
        • Size 74KB
        • SHA256 e8b873e18a81e5c4cd8ab69d84dac8fead291d50b3c44633cd7fddad709a13d6
        • MD5 SHA1 SHA512 SSDEEP TLSH

        698460A0B6E60F2F602361424D832905_8BB23D43DE574E82F2BEE0DF0EC47EEB

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\698460A0B6E60F2F602361424D832905_8BB23D43DE574E82F2BEE0DF0EC47EEB
        • Size 471B
        • SHA256 4181ff5096693f7ba0481c3851de5bb3e7c72129ab79d5ca7e86de8f4a3753b9
        • MD5 SHA1 SHA512 TLSH

        8EC9B1D0ABBD7F98B401D425828828CE_6FBFBE34ABAF2109B411B965FB39009E

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\8EC9B1D0ABBD7F98B401D425828828CE_6FBFBE34ABAF2109B411B965FB39009E
        • Size 727B
        • SHA256 498fd46879cc823632307d3cde6225f5c3594e62ec3b1254062f0504415002e7
        • MD5 SHA1 SHA512 TLSH

        C8E534EE129F27D55460CE17FD628216_1130D9B25898B0DB0D4F04DC5B93F141

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\C8E534EE129F27D55460CE17FD628216_1130D9B25898B0DB0D4F04DC5B93F141
        • Size 727B
        • SHA256 5f59c273582d1f7461890515bcdfcd0306152ac82e7b5129e9212fde0518d275
        • MD5 SHA1 SHA512 TLSH

        698460A0B6E60F2F602361424D832905_8BB23D43DE574E82F2BEE0DF0EC47EEB

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\698460A0B6E60F2F602361424D832905_8BB23D43DE574E82F2BEE0DF0EC47EEB
        • Size 400B
        • SHA256 3598e5f9848e68675d70032ed245545f4c7add91a60e969d0c045ec0e02f590e
        • MD5 SHA1 SHA512 TLSH

        8EC9B1D0ABBD7F98B401D425828828CE_6FBFBE34ABAF2109B411B965FB39009E

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\8EC9B1D0ABBD7F98B401D425828828CE_6FBFBE34ABAF2109B411B965FB39009E
        • Size 408B
        • SHA256 e59ceaacce83406ff3ca9bc3f73fabf8d5ebfd5407da9e48b180ac8d741f7bf1
        • MD5 SHA1 SHA512 TLSH

        C8E534EE129F27D55460CE17FD628216_1130D9B25898B0DB0D4F04DC5B93F141

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\C8E534EE129F27D55460CE17FD628216_1130D9B25898B0DB0D4F04DC5B93F141
        • Size 412B
        • SHA256 fafb8301c2c3d1cb278ca416f9bf6a1ee8688d6829fabcff58e917e2a9a62b5f
        • MD5 SHA1 SHA512 TLSH

        powershell.exe.log

        • Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log
        • Size 2KB
        • SHA256 d69b7d84970cb04cd069299fd8aa9cef8394999588bead979104dc3cb743b4f2
        • MD5 SHA1 SHA512 TLSH

        rundll32.exe.log

        • Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\rundll32.exe.log
        • Size 847B
        • SHA256 16f4a7736a0c2aee54256d3d75ce4c0816fabf130b3b92340deca34c5f5fda43
        • MD5 SHA1 SHA512 TLSH

        StartupProfileData-NonInteractive

        • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
        • Size 1KB
        • SHA256 cca996ce3a1fb9cc44bcacc9002798fc66eab27146004d38e65ef98539510f66
        • MD5 SHA1 SHA512 TLSH

        __PSScriptPolicyTest_nrhr3z5d.0q1.psm1

        • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_nrhr3z5d.0q1.psm1
        • Size 60B
        • SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
        • MD5 SHA1 SHA512 TLSH

        MSI480.tmp

        • Path C:\Windows\Installer\MSI480.tmp
        • Size 390KB
        • SHA256 7aacd4c18710e9bc4ff2034895a0a0c8f80f21809fb177d520e93f7688216e6d
        • MD5 SHA1 SHA512 SSDEEP TLSH

        MSIF7A9.tmp

        • Path C:\Windows\Installer\MSIF7A9.tmp
        • Size 347KB
        • SHA256 ba404962848d74940adc5b600ac84ce99eacfc951fe6271031da896d306ad667
        • MD5 SHA1 SHA512 SSDEEP TLSH

        CustomAction.config

        • Path C:\Windows\Installer\SFXCAC37AC7015D4330EB306A3B36AEE7DC12\CustomAction.config
        • Size 956B
        • SHA256 2dbc73a3bc444a9119c9b5e20276698384d9ad9535a8a7547c44d1b9a8d67346
        • MD5 SHA1 SHA512 TLSH

        WixToolset.Dtf.WindowsInstaller.dll

        • Path C:\Windows\Installer\SFXCAC37AC7015D4330EB306A3B36AEE7DC12\WixToolset.Dtf.WindowsInstaller.dll
        • Size 193KB
        • SHA256 a614884ea627da1925131ebf41e8ae202caeac0fe543b86384f5eb2bfaf1aa75
        • MD5 SHA1 SHA512 SSDEEP TLSH

        Atera.Agent.Installer.Msi.Ca.dll

        • Path C:\Windows\Installer\SFXCAD981BC1B9A496048F0535082568BADA8\Atera.Agent.Installer.Msi.Ca.dll
        • Size 74KB
        • SHA256 46e6ea528969185cb3e663d48d00899f558a09078a9bc2a98b8a9dcf8c04fb79
        • MD5 SHA1 SHA512 SSDEEP TLSH

        e58f661.msi

        • Path C:\Windows\Installer\e58f661.msi
        • Size 8.4MB
        • SHA256 1571100ac7ed5c27e470225995828dd39e9760a6a03683ebf669658d15e0d18b
        • MD5 SHA1 SHA512 SSDEEP TLSH

        Tmp3D6D.tmp

        • Path C:\Windows\SystemTemp\Tmp3D6D.tmp
        • Size 3KB
        • SHA256 94739ca46676bd602a78671257fbfce39feaabc9664c6326bf4970a0108e3429
        • MD5 SHA1 SHA512 TLSH

        metadata-2

        • Path \??\GLOBALROOT\Device\HarddiskVolumeShadowCopy2\System Volume Information\SPP\metadata-2
        • Size 24.6MB
        • SHA256 f750d53c057b3a8c170516534f5ab6ba60f9d6e5fec87fd016bf111ad7584533
        • MD5 SHA1 SHA512 SSDEEP TLSH

        {ac7d37cc-18a8-40ee-8c95-904afc862d39}_OnDiskSnapshotProp

        • Path \??\Volume{24346b4b-0000-0000-0000-d01200000000}\System Volume Information\SPP\OnlineMetadataCache\{ac7d37cc-18a8-40ee-8c95-904afc862d39}_OnDiskSnapshotProp
        • Size 6KB
        • SHA256 9e0fef68aa275132563dce909f70c85b3bd89a8d4eb508f1b492bc3aee6d427f
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/472-66-0x00000205F7BE0000-0x00000205F7D2F000-memory.dmp

        memory/472-63-0x00000205F7B50000-0x00000205F7B8C000-memory.dmp

        memory/472-62-0x00000205F5F80000-0x00000205F5F92000-memory.dmp

        memory/2132-586-0x000001F144C70000-0x000001F144DBF000-memory.dmp

        memory/2784-159-0x000001EF59060000-0x000001EF59113000-memory.dmp

        memory/2784-160-0x000001EF58CC0000-0x000001EF58CCA000-memory.dmp

        memory/2784-161-0x000001EF58D20000-0x000001EF58D4A000-memory.dmp

        memory/2784-162-0x000001EF58D20000-0x000001EF58D44000-memory.dmp

        memory/2784-164-0x000001EF58D00000-0x000001EF58D0A000-memory.dmp

        memory/2784-165-0x000001EF58D30000-0x000001EF58D42000-memory.dmp

        memory/2784-158-0x000001EF58CD0000-0x000001EF58CEC000-memory.dmp

        memory/3188-134-0x000001EE3E150000-0x000001EE3E172000-memory.dmp

        memory/4000-44-0x000002A22E640000-0x000002A22E78F000-memory.dmp

        memory/4000-39-0x000002A214AB0000-0x000002A214AC8000-memory.dmp

        memory/4000-35-0x000002A214A70000-0x000002A214AA4000-memory.dmp

        memory/4476-84-0x000001BA2B0D0000-0x000001BA2B21F000-memory.dmp

        memory/5584-102-0x0000024622C60000-0x0000024622DAF000-memory.dmp