Analysis

  • max time kernel
    148s
  • max time network
    147s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260911-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-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 12 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 43 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 36 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of SetWindowsHookEx 4 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
    • Suspicious use of SetWindowsHookEx
    PID:768
  • 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 SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:3240
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:4972
    • C:\Windows\System32\MsiExec.exe
      C:\Windows\System32\MsiExec.exe -Embedding 5AFA0853ABE773C77234078FDD442F0A
      2⤵
      • Loads dropped DLL
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:4476
      • C:\Windows\system32\rundll32.exe
        rundll32.exe "C:\Windows\Installer\MSI3176.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240726796 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:4660
      • C:\Windows\system32\rundll32.exe
        rundll32.exe "C:\Windows\Installer\MSI380F.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240728109 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:4968
      • C:\Windows\system32\rundll32.exe
        rundll32.exe "C:\Windows\Installer\MSI3C17.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240729187 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:2580
      • C:\Windows\system32\rundll32.exe
        rundll32.exe "C:\Windows\Installer\MSI404F.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240730234 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:4708
      • C:\Windows\system32\rundll32.exe
        rundll32.exe "C:\Windows\Installer\MSI88D6.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240748921 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:4492
    • C:\Windows\System32\MsiExec.exe
      C:\Windows\System32\MsiExec.exe -Embedding 676EF89D1E7FFD4EABE62A7EE14B80B3 E Global\MSI0000
      2⤵
      • Loads dropped DLL
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:2244
      • C:\Program Files\ATERA Networks\AteraAgent\Agent\AteraAgent.exe
        "C:\Program Files\ATERA Networks\AteraAgent\Agent\AteraAgent.exe" init-settings --agent-id "8cd16d9f-b4e7-4042-9570-700a71604912" --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:1572
      • 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
        • Drops file in Windows directory
        • Modifies data under HKEY_USERS
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:2752
      • 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
        • Drops file in Windows directory
        • System Time Discovery
        • Modifies data under HKEY_USERS
        • Suspicious behavior: EnumeratesProcesses
        PID:3524
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Checks SCSI registry key(s)
    • Suspicious use of AdjustPrivilegeToken
    PID:3052
  • 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:856
    • 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:4116
      • 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:4300

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        e592c37.rbs

        • Path C:\Config.Msi\e592c37.rbs
        • Size 7KB
        • SHA256 3b83fa6a166a2d99937858970056b1a6b3d65428bae4dc43502997c1e92daa24
        • 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 bc3a29879d8cea5df2f12ad5d279f7981073c586d298392fe532236b23559640
        • 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 d8414da3e076bcfaa2dd39620c722f8425a2f5bd09bd4ac771f5effe2ea37b10
        • 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

        StartupProfileData-NonInteractive

        • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
        • Size 1KB
        • SHA256 b67191a152d4566d0194395342f55c6142d94005610603fdc92ac4d491519f82
        • MD5 SHA1 SHA512 TLSH

        MSI3176.tmp

        • Path C:\Windows\Installer\MSI3176.tmp
        • Size 347KB
        • SHA256 ba404962848d74940adc5b600ac84ce99eacfc951fe6271031da896d306ad667
        • MD5 SHA1 SHA512 SSDEEP TLSH

        MSI4283.tmp

        • Path C:\Windows\Installer\MSI4283.tmp
        • Size 390KB
        • SHA256 7aacd4c18710e9bc4ff2034895a0a0c8f80f21809fb177d520e93f7688216e6d
        • MD5 SHA1 SHA512 SSDEEP TLSH

        Atera.Agent.Installer.Msi.Ca.dll

        • Path C:\Windows\Installer\SFXCA9E8D6A12F84BA41A747B6A8303FC597E\Atera.Agent.Installer.Msi.Ca.dll
        • Size 74KB
        • SHA256 46e6ea528969185cb3e663d48d00899f558a09078a9bc2a98b8a9dcf8c04fb79
        • MD5 SHA1 SHA512 SSDEEP TLSH

        CustomAction.config

        • Path C:\Windows\Installer\SFXCAD74D4D93414C5158B0ED4D3F58EB32CC\CustomAction.config
        • Size 956B
        • SHA256 2dbc73a3bc444a9119c9b5e20276698384d9ad9535a8a7547c44d1b9a8d67346
        • MD5 SHA1 SHA512 TLSH

        WixToolset.Dtf.WindowsInstaller.dll

        • Path C:\Windows\Installer\SFXCAD74D4D93414C5158B0ED4D3F58EB32CC\WixToolset.Dtf.WindowsInstaller.dll
        • Size 193KB
        • SHA256 a614884ea627da1925131ebf41e8ae202caeac0fe543b86384f5eb2bfaf1aa75
        • MD5 SHA1 SHA512 SSDEEP TLSH

        e592c36.msi

        • Path C:\Windows\Installer\e592c36.msi
        • Size 8.4MB
        • SHA256 1571100ac7ed5c27e470225995828dd39e9760a6a03683ebf669658d15e0d18b
        • MD5 SHA1 SHA512 SSDEEP TLSH

        Tmp8E0D.tmp

        • Path C:\Windows\SystemTemp\Tmp8E0D.tmp
        • Size 3KB
        • SHA256 94739ca46676bd602a78671257fbfce39feaabc9664c6326bf4970a0108e3429
        • MD5 SHA1 SHA512 TLSH

        __PSScriptPolicyTest_w1ocn253.1uv.ps1

        • Path C:\Windows\SystemTemp\__PSScriptPolicyTest_w1ocn253.1uv.ps1
        • Size 60B
        • SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
        • MD5 SHA1 SHA512 TLSH

        metadata-2

        • Path \??\GLOBALROOT\Device\HarddiskVolumeShadowCopy2\System Volume Information\SPP\metadata-2
        • Size 26.1MB
        • SHA256 bda232edba2d6995f344c2952cd93e689525f2289c0a6dc8a70a24ac7d996bac
        • MD5 SHA1 SHA512 SSDEEP TLSH

        {3f6a4fe3-e7fe-4f61-ad03-15fd7f589efa}_OnDiskSnapshotProp

        • Path \??\Volume{e42a0d43-0000-0000-0000-d08302000000}\System Volume Information\SPP\OnlineMetadataCache\{3f6a4fe3-e7fe-4f61-ad03-15fd7f589efa}_OnDiskSnapshotProp
        • Size 6KB
        • SHA256 9f82e1748372448e8c7cea0d8a2aefc4dacec37baaf87b7198d86c31de8462e7
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/2752-105-0x000001AE37F60000-0x000001AE37F82000-memory.dmp

        memory/3240-100-0x000002262AF90000-0x000002262B934000-memory.dmp

        memory/3524-123-0x00000180F3B20000-0x00000180F3B4A000-memory.dmp

        memory/3524-122-0x00000180F36A0000-0x00000180F36AA000-memory.dmp

        memory/3524-124-0x00000180F3B20000-0x00000180F3B44000-memory.dmp

        memory/3524-126-0x00000180F36F0000-0x00000180F36FA000-memory.dmp

        memory/3524-127-0x00000180F3C40000-0x00000180F3C52000-memory.dmp

        memory/3524-121-0x00000180F3910000-0x00000180F39C2000-memory.dmp

        memory/3524-120-0x00000180F36C0000-0x00000180F36DE000-memory.dmp

        memory/4660-22-0x000002170C810000-0x000002170C828000-memory.dmp

        memory/4660-18-0x000002170BA80000-0x000002170BAB4000-memory.dmp

        memory/4968-43-0x000001AEF0B40000-0x000001AEF0B7C000-memory.dmp

        memory/4968-42-0x000001AEF0AE0000-0x000001AEF0AF2000-memory.dmp