Analysis

  • max time kernel
    148s
  • max time network
    145s
  • platform
    windows10-ltsc_2021_x64
  • resource
    win10ltsc2021-20260911-en
  • resource tags

    arch:x64arch:x86image:win10ltsc2021-20260911-enlocale:en-usos:windows10-ltsc_2021-x64systemwindows
  • submitted
    24/09/2026, 14:45

General

  • Target
    setup_Z-_Mason_Street_Furniture_(Not_Supported_by_Group_IT).msi
  • Size 8.4MB
  • Sample260924-r4v8aafe28
  • 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 31 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 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:5084
  • 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:4600
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:872
    • C:\Windows\System32\MsiExec.exe
      C:\Windows\System32\MsiExec.exe -Embedding EFA05043CAD2BDC21CB5192EE4FCB031
      2⤵
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:2640
      • C:\Windows\system32\rundll32.exe
        rundll32.exe "C:\Windows\Installer\MSIF44E.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240710875 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:3720
      • C:\Windows\system32\rundll32.exe
        rundll32.exe "C:\Windows\Installer\MSIF633.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240711218 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:4420
      • C:\Windows\system32\rundll32.exe
        rundll32.exe "C:\Windows\Installer\MSIFAD8.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240712406 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:4928
      • C:\Windows\system32\rundll32.exe
        rundll32.exe "C:\Windows\Installer\MSIFE83.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240713343 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:6136
      • C:\Windows\system32\rundll32.exe
        rundll32.exe "C:\Windows\Installer\MSI469C.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240731828 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:4900
    • C:\Windows\System32\MsiExec.exe
      C:\Windows\System32\MsiExec.exe -Embedding 7C82B144D8AE42BFAA0EBD17C219172C E Global\MSI0000
      2⤵
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:5692
      • C:\Program Files\ATERA Networks\AteraAgent\Agent\AteraAgent.exe
        "C:\Program Files\ATERA Networks\AteraAgent\Agent\AteraAgent.exe" init-settings --agent-id "200fb04e-49c0-4b28-b691-3c63f0a97c79" --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:5464
      • 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
        • Suspicious use of AdjustPrivilegeToken
        PID:2944
      • 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
        • Suspicious use of AdjustPrivilegeToken
        PID:5748
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Checks SCSI registry key(s)
    • Suspicious use of AdjustPrivilegeToken
    PID:5736
  • 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
    • Modifies data under HKEY_USERS
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:4456
    • 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:1228
      • 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:5696

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        e58f374.rbs

        • Path C:\Config.Msi\e58f374.rbs
        • Size 7KB
        • SHA256 57065a3c30e26a1c480b8ed4cd413f417644e7ecca8457042e4b142a6c0a323a
        • 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 7e36116673a9ecb8958f5511bef4ce465900bfb26a04b53a26a052fbbe2b8df3
        • 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 54756e7433e253d43596332021accbd601ef4f74c80d2fc08de250af3169af38
        • 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 11f378f0d30caf4adce4e6b84677c4d14714d0299de5196fa185ff52485417f8
        • MD5 SHA1 SHA512 TLSH

        8EC9B1D0ABBD7F98B401D425828828CE_6FBFBE34ABAF2109B411B965FB39009E

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\8EC9B1D0ABBD7F98B401D425828828CE_6FBFBE34ABAF2109B411B965FB39009E
        • Size 408B
        • SHA256 35a3a9e02510bd04c50bd4491fa9842f1eb04e4d5a6a4ac837cea866e830145a
        • MD5 SHA1 SHA512 TLSH

        C8E534EE129F27D55460CE17FD628216_1130D9B25898B0DB0D4F04DC5B93F141

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\C8E534EE129F27D55460CE17FD628216_1130D9B25898B0DB0D4F04DC5B93F141
        • Size 412B
        • SHA256 b830d92ee361542d4ea113a8f857863777918376bab2ba08f6615fc2fe807460
        • MD5 SHA1 SHA512 TLSH

        powershell.exe.log

        • Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log
        • Size 2KB
        • SHA256 81fc6cfe81caf86f84e1285cb854082ac5e127335b5946da154a73f7aa9c2122
        • MD5 SHA1 SHA512 TLSH

        rundll32.exe.log

        • Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\rundll32.exe.log
        • Size 847B
        • SHA256 ec084a6c6ecd7d31f1927b0cd926ec03ce346a469f24e5a860e05f2241bd7bf4
        • MD5 SHA1 SHA512 TLSH

        StartupProfileData-NonInteractive

        • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
        • Size 1KB
        • SHA256 dd164b6966f857069eef6a8277408a0a1d5495cffbf7519e4bd743739081d318
        • MD5 SHA1 SHA512 TLSH

        __PSScriptPolicyTest_0vfakzqb.ss2.ps1

        • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_0vfakzqb.ss2.ps1
        • Size 60B
        • SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
        • MD5 SHA1 SHA512 TLSH

        MSI88.tmp

        • Path C:\Windows\Installer\MSI88.tmp
        • Size 390KB
        • SHA256 7aacd4c18710e9bc4ff2034895a0a0c8f80f21809fb177d520e93f7688216e6d
        • MD5 SHA1 SHA512 SSDEEP TLSH

        MSIF44E.tmp

        • Path C:\Windows\Installer\MSIF44E.tmp
        • Size 347KB
        • SHA256 ba404962848d74940adc5b600ac84ce99eacfc951fe6271031da896d306ad667
        • MD5 SHA1 SHA512 SSDEEP TLSH

        CustomAction.config

        • Path C:\Windows\Installer\SFXCA3C1F471651446DB9CE7E91F74CED173C\CustomAction.config
        • Size 956B
        • SHA256 2dbc73a3bc444a9119c9b5e20276698384d9ad9535a8a7547c44d1b9a8d67346
        • MD5 SHA1 SHA512 TLSH

        WixToolset.Dtf.WindowsInstaller.dll

        • Path C:\Windows\Installer\SFXCA3C1F471651446DB9CE7E91F74CED173C\WixToolset.Dtf.WindowsInstaller.dll
        • Size 193KB
        • SHA256 a614884ea627da1925131ebf41e8ae202caeac0fe543b86384f5eb2bfaf1aa75
        • MD5 SHA1 SHA512 SSDEEP TLSH

        Atera.Agent.Installer.Msi.Ca.dll

        • Path C:\Windows\Installer\SFXCA877C420ADE4C56DAD3A7B8F5AD7214D4\Atera.Agent.Installer.Msi.Ca.dll
        • Size 74KB
        • SHA256 46e6ea528969185cb3e663d48d00899f558a09078a9bc2a98b8a9dcf8c04fb79
        • MD5 SHA1 SHA512 SSDEEP TLSH

        e58f373.msi

        • Path C:\Windows\Installer\e58f373.msi
        • Size 8.4MB
        • SHA256 1571100ac7ed5c27e470225995828dd39e9760a6a03683ebf669658d15e0d18b
        • MD5 SHA1 SHA512 SSDEEP TLSH

        Tmp4CBF.tmp

        • Path C:\Windows\Temp\Tmp4CBF.tmp
        • Size 3KB
        • SHA256 94739ca46676bd602a78671257fbfce39feaabc9664c6326bf4970a0108e3429
        • MD5 SHA1 SHA512 TLSH

        metadata-2

        • Path \??\GLOBALROOT\Device\HarddiskVolumeShadowCopy2\System Volume Information\SPP\metadata-2
        • Size 24.0MB
        • SHA256 4fea3522ce7b5e09b012bd999b7470fcc1ecfc4f9e7b85613abca3f282581f8b
        • MD5 SHA1 SHA512 SSDEEP TLSH

        {f6b647bb-7a9c-42a6-90fb-ad71f8e06bd5}_OnDiskSnapshotProp

        • Path \??\Volume{98259768-0000-0000-0000-d08302000000}\System Volume Information\SPP\OnlineMetadataCache\{f6b647bb-7a9c-42a6-90fb-ad71f8e06bd5}_OnDiskSnapshotProp
        • Size 6KB
        • SHA256 5af66e405875daa74b02b8baaeee50a70299d103ce15cc42602367a57861aa77
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/2944-118-0x00000288C8EB0000-0x00000288C8ED2000-memory.dmp

        memory/2944-128-0x00000288C9A30000-0x00000288C9C4D000-memory.dmp

        memory/3720-35-0x0000023832A20000-0x0000023832A38000-memory.dmp

        memory/3720-31-0x0000023832AF0000-0x0000023832B24000-memory.dmp

        memory/4420-57-0x0000019813580000-0x0000019813592000-memory.dmp

        memory/4420-58-0x0000019813860000-0x000001981389C000-memory.dmp

        memory/5748-144-0x00000133A5870000-0x00000133A589A000-memory.dmp

        memory/5748-149-0x00000133A58A0000-0x00000133A58B2000-memory.dmp

        memory/5748-148-0x00000133A5870000-0x00000133A587A000-memory.dmp

        memory/5748-146-0x00000133A5870000-0x00000133A5894000-memory.dmp