Analysis

  • max time kernel
    148s
  • max time network
    152s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    10/09/2026, 12:36

General

  • Target
    ScreenConnect.ClientSetup.msi
  • Size 11.8MB
  • Sample260910-ptefnstcna
  • SHA256 75ded0e5130839201ad84acfd076662da6544b45660841c755dcaf71b1b8d681
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Badlisted process makes network request 4 IoCs

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

  • Sets service image path in registry 3 TTPs 1 IoCs

    This determines the executable launched when a service starts. It can be used to establish persistence.

  • ConnectWise ScreenConnect remote access tool

    ConnectWise ScreenConnect is a remote desktop tool that can be used as a backdoor.

  • Event Triggered Execution: Component Object Model Hijacking 1 TTPs

    Adversaries may establish persistence by executing malicious content triggered by hijacked references to Component Object Model (COM) objects.

  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 42 IoCs
  • Enumerates connected drives 3 TTPs 46 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Boot or Logon Autostart Execution: Authentication Package 1 TTPs 1 IoCs

    Suspicious Windows Authentication Registry Modification.

  • Drops file in System32 directory 12 IoCs
  • Drops file in Program Files directory 17 IoCs
  • Drops file in Windows directory 17 IoCs
  • Event Triggered Execution: Installer Packages 2 TTPs 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 7 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.

  • Checks processor information in registry 2 TTPs 2 IoCs

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

  • Modifies data under HKEY_USERS 14 IoCs
  • Modifies registry class 37 IoCs
  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 9 IoCs
  • Suspicious use of SendNotifyMessage 7 IoCs
  • Suspicious use of SetWindowsHookEx 5 IoCs
  • Suspicious use of WriteProcessMemory 9 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\ScreenConnect.ClientSetup.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:4592
  • C:\Windows\system32\msiexec.exe
    C:\Windows\system32\msiexec.exe /V
    1⤵
    • Enumerates connected drives
    • Boot or Logon Autostart Execution: Authentication Package
    • 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:5088
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding B15FF6369FE1C7C7DAFD2BC995C2D1C0 C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:3492
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI4164.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240730875 1 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:420
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI4916.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240732718 11 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.CheckMsiMotw
        3⤵
        • Badlisted process makes network request
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:2392
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI4394.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240796593 19 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.CheckMsiFileName
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:6108
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:6076
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 3F7B50E1D26910E774161E483F902FB9
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:2448
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 90CDF76265658238BECCB6491EC6792B E Global\MSI0000
        2⤵
        • Loads dropped DLL
        • Drops file in Windows directory
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:4544
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:4492
    • C:\Program Files (x86)\ScreenConnect Client (25cdebda8cc64fa8)\ScreenConnect.ClientService.exe
      "C:\Program Files (x86)\ScreenConnect Client (25cdebda8cc64fa8)\ScreenConnect.ClientService.exe" "?e=Access&y=Guest&h=instance-pv6mur-relay.screenconnect.com&p=443&s=eca31c59-1ac5-469a-b0f4-d51ff1dd2f39&k=BgIAAACkAABSU0ExAAgAAAEAAQAd4IzCPPLq9HI1FwYPuUPJDfqk%2fxkWbDoOJFt4i52rXQmTnFQ%2fYTna60hGAsG5Qx2GMPnmINtSnyl9dECpp9A3K4Set0PzOO1V1w020yNCjCHP26opduSuqqENHlxIoA1yTMmCTo0frXuOv9VSkh31WWAUUql6feWmcKiG5fpxHRX1t8iuOWhRrAsCt73QLUmNSefhGk%2bGq0laBlxgQart8X0B%2bjI4evWp96EJ%2bfoU785V2bCJwPxuC2P22la%2bkaDWCOxDxftgvPBKVN3Ib19ZWPl%2fS6%2bf4%2fnzBB3k57GpbV1EoU%2fSA3sHHheldSvJhvS6uHpbM%2faiAaAw4ddQglLY&c=Gmail&c=&c=&c=&c=&c=&c=&c="
      1⤵
      • Sets service image path in registry
      • Executes dropped EXE
      • Loads dropped DLL
      • Drops file in System32 directory
      • System Location Discovery: System Language Discovery
      • Modifies data under HKEY_USERS
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:5624
      • C:\Program Files (x86)\ScreenConnect Client (25cdebda8cc64fa8)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (25cdebda8cc64fa8)\ScreenConnect.WindowsClient.exe" "RunRole" "62e63a0f-ed00-4b90-b848-bb675597a844" "User"
        2⤵
        • Executes dropped EXE
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        PID:2340
      • C:\Program Files (x86)\ScreenConnect Client (25cdebda8cc64fa8)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (25cdebda8cc64fa8)\ScreenConnect.WindowsClient.exe" "RunRole" "f68fbff6-312f-444e-a454-e0ecd9e58837" "System"
        2⤵
        • Executes dropped EXE
        • Checks processor information in registry
        • Modifies data under HKEY_USERS
        PID:1248

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

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          Downloads

          e5a8be7.rbs

          • Path C:\Config.Msi\e5a8be7.rbs
          • Size 214KB
          • SHA256 203c4f1739f0857503c5b921c921ada5347ca54f18da25dd3713460d5eb78583
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.en-US.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (25cdebda8cc64fa8)\Client.en-US.resources
          • Size 64KB
          • SHA256 a90983b3d26f9e6bb472663b84d13254349f62b0ad4c667fd76b3edd270240b2
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (25cdebda8cc64fa8)\Client.resources
          • Size 6KB
          • SHA256 bd34378ad99f7609fa0c7c8edde6337c738a61d288863015629329806a1cc728
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Client.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (25cdebda8cc64fa8)\ScreenConnect.Client.dll
          • Size 412KB
          • SHA256 27e873d0fceefdd1a12ca77e3bbecec2ece7acdba433b47dca102c35e1c5896c
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (25cdebda8cc64fa8)\ScreenConnect.ClientService.dll
          • Size 92KB
          • SHA256 78fa9cf69577f6990275c7c472f7114f9d0c85e660f3b9c81b085fc3cfbc8673
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (25cdebda8cc64fa8)\ScreenConnect.ClientService.exe
          • Size 93KB
          • SHA256 5956f9afb3ba610c38b2cfda88dd15be98783963769a12020c93ce05e749b3c3
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (25cdebda8cc64fa8)\ScreenConnect.Core.dll
          • Size 582KB
          • SHA256 4eab8752d05cd31bafd07edde7d18061cb63eea99af3132460e6dc08bb5f9e73
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (25cdebda8cc64fa8)\ScreenConnect.Windows.dll
          • Size 1.7MB
          • SHA256 ec4de5e6e9c079a30a5780d79ee662e0a4c6d009f0e3f911edc560973fb17d1e
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsAuthenticationPackage.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (25cdebda8cc64fa8)\ScreenConnect.WindowsAuthenticationPackage.dll
          • Size 254KB
          • SHA256 a5b8f0070201e4f26260af6a25941ea38bd7042aefd48cd68b9acf951fa99ee5
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsClient.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (25cdebda8cc64fa8)\ScreenConnect.WindowsClient.exe
          • Size 685KB
          • SHA256 2763b953657e3c4d6b2f952218a1e1963bcd6971f0b1102d99bb7efea04ceb29
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsClient.exe.config

          • Path C:\Program Files (x86)\ScreenConnect Client (25cdebda8cc64fa8)\ScreenConnect.WindowsClient.exe.config
          • Size 266B
          • SHA256 87c640d3184c17d3b446a72d5f13d643a774b4ecc7afbedfd4e8da7795ea8077
          • MD5 SHA1 SHA512 TLSH

          ScreenConnect.WindowsCredentialProvider.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (25cdebda8cc64fa8)\ScreenConnect.WindowsCredentialProvider.dll
          • Size 837KB
          • SHA256 7511e679597572782241ff989c065c02f9f5a12ab37290b69a27226eda57ce75
          • MD5 SHA1 SHA512 SSDEEP TLSH

          app.config

          • Path C:\Program Files (x86)\ScreenConnect Client (25cdebda8cc64fa8)\app.config
          • Size 1KB
          • SHA256 be1bf12ed80c3398ae0c09edc4d64243acc09712a01ad37ddb7bcc926472d8df
          • MD5 SHA1 SHA512 TLSH

          system.config

          • Path C:\Program Files (x86)\ScreenConnect Client (25cdebda8cc64fa8)\system.config
          • Size 966B
          • SHA256 df5e16e0e7d2935cb0114176aa2a58d3a9ab8a54362c769aeb328084ea30a71c
          • MD5 SHA1 SHA512 TLSH

          MSI4164.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\MSI4164.tmp
          • Size 1.1MB
          • SHA256 400ff5b9a4439339876282909b23c397ffa208f4bcf64460fa2521284acf0b6e
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Microsoft.Deployment.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI4164.tmp-\Microsoft.Deployment.WindowsInstaller.dll
          • Size 172KB
          • SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI4164.tmp-\ScreenConnect.Core.dll
          • Size 572KB
          • SHA256 74f2d225b492eb77a5654bcaafec5162d0c5f72de884daa4c32daf54e2bff3d7
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.InstallerActions.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI4164.tmp-\ScreenConnect.InstallerActions.dll
          • Size 24KB
          • SHA256 2022f13b1f562d3cbef3a3926f0370a2de64e57ff281a121f90001a47499a356
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI4164.tmp-\ScreenConnect.Windows.dll
          • Size 1.7MB
          • SHA256 93f910f732855000861c1b4e6c55a2dee0a8cbb2172d89c7a2bc99053746c193
          • MD5 SHA1 SHA512 SSDEEP TLSH

          CustomAction.config

          • Path C:\Users\Admin\AppData\Local\Temp\MSI4916.tmp-\CustomAction.config
          • Size 234B
          • SHA256 7027b69ab6ebc9f3f7d2f6c800793fde2a057b76010d8cfd831cf440371b2b23
          • MD5 SHA1 SHA512 TLSH

          ScreenConnect.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI4916.tmp-\ScreenConnect.WindowsInstaller.dll
          • Size 137KB
          • SHA256 361bbc692084841e4c8d22c89ca89c711d0fe17bc8759241736531a2f28de25b
          • MD5 SHA1 SHA512 SSDEEP TLSH

          MSI9220.tmp

          • Path C:\Windows\Installer\MSI9220.tmp
          • Size 202KB
          • SHA256 3cff4ac91288a0ff0c13278e73b282a64e83d089c5a61a45d483194ab336b852
          • MD5 SHA1 SHA512 SSDEEP TLSH

          e5a8be6.msi

          • Path C:\Windows\Installer\e5a8be6.msi
          • Size 11.8MB
          • SHA256 75ded0e5130839201ad84acfd076662da6544b45660841c755dcaf71b1b8d681
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ensezpl1.newcfg

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (25cdebda8cc64fa8)\ensezpl1.newcfg
          • Size 683B
          • SHA256 4b8c0328e99486e7bc1cb55780570baba954e7aa9a48048ef1b63fa41000b57e
          • MD5 SHA1 SHA512 TLSH

          huc3e4jr.newcfg

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (25cdebda8cc64fa8)\huc3e4jr.newcfg
          • Size 883B
          • SHA256 76fcb23668a81427f2a8dfacc54a81d861a3ee3fc22ec5f90306b296acbed062
          • MD5 SHA1 SHA512 TLSH

          user.config

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (25cdebda8cc64fa8)\user.config
          • Size 520B
          • SHA256 ff8fa3aad4001bd5a48edc3395626d9916552a87308079cea7620dce1b5d567c
          • MD5 SHA1 SHA512 TLSH

          wjdilkse.newcfg

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (25cdebda8cc64fa8)\wjdilkse.newcfg
          • Size 883B
          • SHA256 9ece453ef13be24cf4fc89d5aeb1a9f780a529fe0f6c7907c9754f064055cf34
          • MD5 SHA1 SHA512 TLSH

          {9d5676e2-6cc1-40e2-8fea-e6995316be06}_OnDiskSnapshotProp

          • Path \??\Volume{cb1876cb-0000-0000-0000-d08302000000}\System Volume Information\SPP\OnlineMetadataCache\{9d5676e2-6cc1-40e2-8fea-e6995316be06}_OnDiskSnapshotProp
          • Size 6KB
          • SHA256 c690d0a9fd21ea57620f8e1948f8b95ed516e86a0ff0e1306c96d0b4e25c097e
          • MD5 SHA1 SHA512 SSDEEP TLSH

          memory/420-34-0x0000000005F50000-0x000000000650A000-memory.dmp

          memory/420-33-0x00000000057E0000-0x0000000005990000-memory.dmp

          memory/420-21-0x0000000003400000-0x000000000342E000-memory.dmp

          memory/420-25-0x00000000034D0000-0x00000000034DC000-memory.dmp

          memory/420-29-0x0000000003580000-0x0000000003616000-memory.dmp

          memory/2340-210-0x00000000007A0000-0x0000000000850000-memory.dmp

          memory/2340-213-0x000000001BB80000-0x000000001BD30000-memory.dmp

          memory/2340-215-0x000000001BEC0000-0x000000001C048000-memory.dmp

          memory/2340-214-0x0000000000FB0000-0x0000000000FCA000-memory.dmp

          memory/2340-212-0x000000001B930000-0x000000001B9C6000-memory.dmp

          memory/2340-211-0x000000001B520000-0x000000001B58C000-memory.dmp

          memory/2392-64-0x00000000058C0000-0x00000000058E8000-memory.dmp

          memory/5624-189-0x0000000004250000-0x0000000004291000-memory.dmp

          memory/5624-167-0x0000000004200000-0x0000000004250000-memory.dmp

          memory/5624-186-0x00000000042C0000-0x000000000432C000-memory.dmp

          memory/5624-191-0x00000000045C0000-0x0000000004696000-memory.dmp

          memory/5624-187-0x00000000043D0000-0x0000000004462000-memory.dmp

          memory/5624-153-0x0000000004000000-0x00000000041B0000-memory.dmp

          memory/5624-143-0x0000000001730000-0x000000000174A000-memory.dmp

          memory/5624-149-0x0000000003DB0000-0x0000000003E46000-memory.dmp