Analysis

  • max time kernel
    149s
  • max time network
    134s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    22/07/2026, 12:18

General

  • Target
    dexcom-uploader-4.7.1.msi
  • Size 10.0MB
  • Sample260722-pgtd3avaqd
  • SHA256 a00428177182c6f1843cd717c86010c9f78e1ef4229c264c92c9acc617a8e04c
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Drops file in Drivers directory 3 IoCs
  • Executes dropped EXE 4 IoCs
  • Loads dropped DLL 64 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Badlisted process makes network request 2 IoCs

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

  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • 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 Program Files directory 64 IoCs
  • Drops file in Windows directory 52 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Event Triggered Execution: Installer Packages 2 TTPs 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 12 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • 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 3 IoCs
  • Modifies registry class 23 IoCs
  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 3 IoCs
  • Suspicious use of SendNotifyMessage 1 IoCs
  • Suspicious use of SetWindowsHookEx 5 IoCs
  • Suspicious use of WriteProcessMemory 11 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\dexcom-uploader-4.7.1.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:1900
  • C:\Windows\system32\msiexec.exe
    C:\Windows\system32\msiexec.exe /V
    1⤵
    • Adds Run key to start application
    • Enumerates connected drives
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • Modifies data under HKEY_USERS
    • Modifies registry class
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1700
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding 2C718EC2614ABC117BF1870C20464F3D C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      PID:3228
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:2860
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 17634AA9B12580B09E0C1FDAEA970E7A
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:1208
        • C:\Windows\SysWOW64\rundll32.exe
          rundll32.exe "C:\Windows\Installer\MSID4BE.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240768234 20 Dexcom.WixCustomAction!Dexcom.WixCustomAction.CustomActions.CheckForWindows10
          3⤵
          • Loads dropped DLL
          • Drops file in Windows directory
          • System Location Discovery: System Language Discovery
          PID:948
        • C:\Windows\SysWOW64\rundll32.exe
          rundll32.exe "C:\Windows\Installer\MSID963.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240769421 26 Dexcom.WixCustomAction!Dexcom.WixCustomAction.CustomActions.InstallDexcomCertificate
          3⤵
          • Loads dropped DLL
          • Drops file in Windows directory
          • System Location Discovery: System Language Discovery
          PID:1540
        • C:\Windows\SysWOW64\rundll32.exe
          rundll32.exe "C:\Windows\Installer\MSIDA7D.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240769734 31 Dexcom.WixCustomAction!Dexcom.WixCustomAction.CustomActions.SetDpInstallFlag
          3⤵
          • Loads dropped DLL
          • Drops file in Windows directory
          • System Location Discovery: System Language Discovery
          PID:4748
        • C:\Program Files (x86)\Dexcom\Uploader\UploaderLauncher.exe
          "C:\Program Files (x86)\Dexcom\Uploader\UploaderLauncher.exe"
          3⤵
          • Executes dropped EXE
          • System Location Discovery: System Language Discovery
          • Suspicious use of WriteProcessMemory
          PID:4492
          • C:\Program Files (x86)\Dexcom\Uploader\Dexcom.Agent.Uploader.exe
            "C:\Program Files (x86)\Dexcom\Uploader\Dexcom.Agent.Uploader.exe"
            4⤵
            • Executes dropped EXE
            • System Location Discovery: System Language Discovery
            PID:6032
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 855B690188B8C05A41FB52472A0FC9EF E Global\MSI0000
        2⤵
        • Loads dropped DLL
        • Drops file in Windows directory
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:4560
        • C:\Windows\SysWOW64\rundll32.exe
          rundll32.exe "C:\Windows\Installer\MSIDE3B.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240770703 73 Dexcom.WixCustomAction!Dexcom.WixCustomAction.CustomActions.UpdateHostsFile
          3⤵
          • Drops file in Drivers directory
          • Loads dropped DLL
          • Drops file in Windows directory
          • System Location Discovery: System Language Discovery
          PID:5068
        • C:\Windows\SysWOW64\rundll32.exe
          rundll32.exe "C:\Windows\Installer\MSIE3CB.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240772046 85 Dexcom.WixCustomAction!Dexcom.WixCustomAction.CustomActions.CopyDllsFromUpdater
          3⤵
          • Loads dropped DLL
          • Drops file in Windows directory
          • System Location Discovery: System Language Discovery
          PID:4304
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:2940
    • C:\Windows\system32\svchost.exe
      C:\Windows\system32\svchost.exe -k GPSvcGroup
      1⤵
        PID:2952
      • C:\Program Files (x86)\Dexcom\Updater\Dexcom.Agent.UpdateService.exe
        "C:\Program Files (x86)\Dexcom\Updater\Dexcom.Agent.UpdateService.exe"
        1⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Drops file in Program Files directory
        • System Location Discovery: System Language Discovery
        PID:3288
      • C:\Program Files (x86)\Dexcom\Uploader\Dexcom.Agent.Uploader.exe
        "C:\Program Files (x86)\Dexcom\Uploader\Dexcom.Agent.Uploader.exe"
        1⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        PID:1444

      Network

            MITRE ATT&CK Enterprise v16

            Replay Monitor

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            Downloads

            e59cd59.rbs

            • Path C:\Config.Msi\e59cd59.rbs
            • Size 408KB
            • SHA256 ab2332d3bb3552e0f27848b66af49fa5211b5147ea09ce045869a1cec72b1200
            • MD5 SHA1 SHA512 SSDEEP TLSH

            Dexcom.Agent.Core.dll

            • Path C:\Program Files (x86)\Dexcom\Updater\Dexcom.Agent.Core.dll
            • Size 729KB
            • SHA256 86c942267d9ddc7b5c554171c442b2becdefac3816027556bfab2e18bb55b49e
            • MD5 SHA1 SHA512 SSDEEP TLSH

            Dexcom.Agent.UpdateService.exe

            • Path C:\Program Files (x86)\Dexcom\Updater\Dexcom.Agent.UpdateService.exe
            • Size 7KB
            • SHA256 2feb689fedd4e4299b67a6aaea4a57ffb7e46754825a6d151dbc76a34096488b
            • MD5 SHA1 SHA512 SSDEEP TLSH

            Dexcom.Agent.UpdateService.exe.config

            • Path C:\Program Files (x86)\Dexcom\Updater\Dexcom.Agent.UpdateService.exe.config
            • Size 3KB
            • SHA256 9f4d420d32663ada6bc6b36e6a275d8494b9383328152e5e10ade99c4f7fdd54
            • MD5 SHA1 SHA512 TLSH

            Dexcom.Uploader.config

            • Path C:\ProgramData\Dexcom\Uploader\Dexcom.Uploader.config
            • Size 867B
            • SHA256 0cc327a375e7ed50a4dd758fdf2578344ba3fbe87ade8a0d7465f6e674718414
            • MD5 SHA1 SHA512 TLSH

            Dexcom.Uploader.config

            • Path C:\ProgramData\Dexcom\Uploader\Dexcom.Uploader.config
            • Size 908B
            • SHA256 4f252f9f9c9e4733cd77dbcbe63f080338743bd6777e005b8bff63427ceeed21
            • MD5 SHA1 SHA512 TLSH

            Dexcom Uploader.lnk

            • Path C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Dexcom Uploader.lnk
            • Size 1KB
            • SHA256 eeb27d5dd10ce1cf50dfde9e57c478195217d2aa5b59f47b41e7c98777ec02b4
            • MD5 SHA1 SHA512 TLSH

            Dexcom Uploader.lnk~RFe59e620.TMP

            • Path C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Dexcom Uploader.lnk~RFe59e620.TMP
            • Size 1KB
            • SHA256 235731f4304635ba9a5d585d11bf82f6ddc1da6b7d5f41a35fa5e6abd0217c32
            • MD5 SHA1 SHA512 TLSH

            MSI7209.tmp

            • Path C:\Users\Admin\AppData\Local\Temp\MSI7209.tmp
            • Size 234KB
            • SHA256 86ada378311714ac96700fa0000bae824342ceae6382ff8bee203b8af8f89b26
            • MD5 SHA1 SHA512 SSDEEP TLSH

            MSID46F.tmp

            • Path C:\Windows\Installer\MSID46F.tmp
            • Size 149KB
            • SHA256 20cbf04a263efc95fc173ce9a6e19ddb924a4e79950af32d0747a0f6f19f66a8
            • MD5 SHA1 SHA512 SSDEEP TLSH

            MSID4BE.tmp

            • Path C:\Windows\Installer\MSID4BE.tmp
            • Size 270KB
            • SHA256 747dd95c76ee9003757816e4b5d9d079c663ffebf4fe0c27321a018cb99da60a
            • MD5 SHA1 SHA512 SSDEEP TLSH

            Dexcom.WixCustomAction.dll

            • Path C:\Windows\Installer\MSID4BE.tmp-\Dexcom.WixCustomAction.dll
            • Size 10KB
            • SHA256 21e22a294c461939724679df370bb3717ca7b598fcfbb367bbafc6e1d5211e11
            • MD5 SHA1 SHA512 SSDEEP TLSH

            Microsoft.Deployment.WindowsInstaller.dll

            • Path C:\Windows\Installer\MSID4BE.tmp-\Microsoft.Deployment.WindowsInstaller.dll
            • Size 183KB
            • SHA256 abe1742945a10588376cd127771c3d5f3f0579d4ff1bde15c41a494451d89444
            • MD5 SHA1 SHA512 SSDEEP TLSH

            CustomAction.config

            • Path C:\Windows\Installer\MSID963.tmp-\CustomAction.config
            • Size 1KB
            • SHA256 33d947c04a10e3aff3dca3b779393fa56ce5f02251c8cbae5076a125fdea081f
            • MD5 SHA1 SHA512 TLSH

            Dexcom.WixCustomAction.pdb

            • Path C:\Windows\Installer\MSIE3CB.tmp-\Dexcom.WixCustomAction.pdb
            • Size 21KB
            • SHA256 e47e7f02e4f00178aeabf4b48ef6b8e6493e8e6e2a644416c455645b6c3388a1
            • MD5 SHA1 SHA512 SSDEEP TLSH

            e59cd58.msi

            • Path C:\Windows\Installer\e59cd58.msi
            • Size 10.0MB
            • SHA256 a00428177182c6f1843cd717c86010c9f78e1ef4229c264c92c9acc617a8e04c
            • MD5 SHA1 SHA512 SSDEEP TLSH

            memory/948-37-0x0000000003F80000-0x0000000003F8A000-memory.dmp

            memory/948-33-0x0000000003F40000-0x0000000003F6E000-memory.dmp

            memory/1444-281-0x0000000005D90000-0x0000000005E40000-memory.dmp

            memory/1444-289-0x0000000006CF0000-0x0000000006E34000-memory.dmp

            memory/1444-298-0x00000000067D0000-0x00000000067F2000-memory.dmp

            memory/1444-297-0x0000000006130000-0x0000000006140000-memory.dmp

            memory/1444-296-0x0000000006110000-0x0000000006128000-memory.dmp

            memory/1444-258-0x0000000000220000-0x00000000002AE000-memory.dmp

            memory/1444-261-0x0000000002750000-0x000000000276E000-memory.dmp

            memory/1444-295-0x00000000060E0000-0x0000000006102000-memory.dmp

            memory/1444-287-0x0000000006840000-0x0000000006B9B000-memory.dmp

            memory/1444-278-0x0000000006160000-0x000000000671A000-memory.dmp

            memory/1444-279-0x0000000005C40000-0x0000000005CD2000-memory.dmp

            memory/1444-280-0x0000000005BA0000-0x0000000005BB6000-memory.dmp

            memory/1444-286-0x0000000005D30000-0x0000000005D52000-memory.dmp

            memory/1444-282-0x0000000005BF0000-0x0000000005C1A000-memory.dmp

            memory/1444-283-0x0000000005E40000-0x0000000005EA2000-memory.dmp

            memory/3288-248-0x0000000003DF0000-0x0000000003E12000-memory.dmp

            memory/3288-253-0x0000000003E20000-0x0000000003E40000-memory.dmp

            memory/3288-252-0x0000000003EE0000-0x0000000003F9A000-memory.dmp

            memory/3288-254-0x0000000003E80000-0x0000000003E94000-memory.dmp

            memory/3288-247-0x0000000000820000-0x0000000000828000-memory.dmp

            memory/3288-264-0x00000000046D0000-0x00000000046F6000-memory.dmp

            memory/3288-257-0x0000000004620000-0x0000000004690000-memory.dmp

            memory/3288-256-0x0000000004120000-0x000000000419A000-memory.dmp

            memory/3288-255-0x0000000003EB0000-0x0000000003EC4000-memory.dmp

            memory/4492-285-0x0000000000EC0000-0x0000000000EC8000-memory.dmp