Analysis

  • max time kernel
    150s
  • max time network
    146s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260911-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    02/11/2026, 07:30

General

  • Target
    37ecde70c8ec686529bdba667d9836f4da9979728b52dee1f1a95c5b35aa9b6b.msi
  • Size 11.3MB
  • Sample261102-jbyhya1xf1
  • SHA256 37ecde70c8ec686529bdba667d9836f4da9979728b52dee1f1a95c5b35aa9b6b
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Loads dropped DLL 11 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 Program Files directory 16 IoCs
  • Drops file in Windows directory 15 IoCs
  • Event Triggered Execution: Installer Packages 2 TTPs 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 3 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 32 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of SetWindowsHookEx 4 IoCs
  • Suspicious use of WriteProcessMemory 4 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\37ecde70c8ec686529bdba667d9836f4da9979728b52dee1f1a95c5b35aa9b6b.msi
    1⤵
    • Enumerates connected drives
    • Event Triggered Execution: Installer Packages
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SetWindowsHookEx
    PID:1276
  • C:\Windows\system32\msiexec.exe
    C:\Windows\system32\msiexec.exe /V
    1⤵
    • Enumerates connected drives
    • Drops file in Program Files directory
    • 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:3304
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding AF33F8EF47FBEC9733E41CF24EB7CBA1 C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:3768
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI4D1C.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240733890 1 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:4524
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:5708
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 8C59C5FBCA2477EFC744A87F593E8EA8
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:5636
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:5252
    • C:\Windows\system32\svchost.exe
      C:\Windows\system32\svchost.exe -k GPSvcGroup
      1⤵
        PID:2432

      Network

            MITRE ATT&CK Enterprise v16

            Replay Monitor

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            Downloads

            e599a14.rbs

            • Path C:\Config.Msi\e599a14.rbs
            • Size 10KB
            • SHA256 e5c5eb9feec678dfedd89282435adc8227e237d1ff798bb88e2776e440d50628
            • MD5 SHA1 SHA512 SSDEEP TLSH

            MSI4D1C.tmp

            • Path C:\Users\Admin\AppData\Local\Temp\MSI4D1C.tmp
            • Size 1.0MB
            • SHA256 a5c116a5746888cdd47fae8269e5d5cc1fa51617744c50256619c75e540034e0
            • MD5 SHA1 SHA512 SSDEEP TLSH

            Microsoft.Deployment.WindowsInstaller.dll

            • Path C:\Users\Admin\AppData\Local\Temp\MSI4D1C.tmp-\Microsoft.Deployment.WindowsInstaller.dll
            • Size 172KB
            • SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.Core.dll

            • Path C:\Users\Admin\AppData\Local\Temp\MSI4D1C.tmp-\ScreenConnect.Core.dll
            • Size 539KB
            • SHA256 1e9eacd3c680b18f3bfee12a835a49d63fed76056aedb2b2ef312999eb6b4033
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.InstallerActions.dll

            • Path C:\Users\Admin\AppData\Local\Temp\MSI4D1C.tmp-\ScreenConnect.InstallerActions.dll
            • Size 11KB
            • SHA256 af7b515d5ea17e6811f7fd4e0fe76b7bbc6c2ff4e58dc005c86fa30d44f184ca
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.Windows.dll

            • Path C:\Users\Admin\AppData\Local\Temp\MSI4D1C.tmp-\ScreenConnect.Windows.dll
            • Size 1.6MB
            • SHA256 f6e77233f0995581f3171ee92c5cab5b8052d177d333a4999e16e696616739a6
            • MD5 SHA1 SHA512 SSDEEP TLSH

            MSI9FA2.tmp

            • Path C:\Windows\Installer\MSI9FA2.tmp
            • Size 202KB
            • SHA256 3cff4ac91288a0ff0c13278e73b282a64e83d089c5a61a45d483194ab336b852
            • MD5 SHA1 SHA512 SSDEEP TLSH

            e599a15.msi

            • Path C:\Windows\Installer\e599a15.msi
            • Size 11.3MB
            • SHA256 37ecde70c8ec686529bdba667d9836f4da9979728b52dee1f1a95c5b35aa9b6b
            • MD5 SHA1 SHA512 SSDEEP TLSH

            metadata-2

            • Path \??\GLOBALROOT\Device\HarddiskVolumeShadowCopy2\System Volume Information\SPP\metadata-2
            • Size 26.1MB
            • SHA256 86b32206eb39a30492a99cd234e7fd3ba73f718653d6d010e1e4d9179c220f89
            • MD5 SHA1 SHA512 SSDEEP TLSH

            {23687863-df08-4e42-958a-00aa512fa543}_OnDiskSnapshotProp

            • Path \??\Volume{f0fdc120-0000-0000-0000-d08302000000}\System Volume Information\SPP\OnlineMetadataCache\{23687863-df08-4e42-958a-00aa512fa543}_OnDiskSnapshotProp
            • Size 6KB
            • SHA256 558e8f82fa1d110d1a656a721d0b13210bbe1cdfcc7666aea416fca1b277524a
            • MD5 SHA1 SHA512 SSDEEP TLSH

            memory/4524-22-0x0000000003360000-0x000000000336A000-memory.dmp

            memory/4524-31-0x0000000005E20000-0x00000000063DA000-memory.dmp

            memory/4524-30-0x00000000056B0000-0x000000000585C000-memory.dmp

            memory/4524-26-0x0000000005470000-0x00000000054FE000-memory.dmp

            memory/4524-18-0x0000000003330000-0x000000000335E000-memory.dmp