Analysis

  • max time kernel
    148s
  • max time network
    154s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    20/08/2026, 18:13

General

  • Target
    ScreenConnect.ClientSetup.msi
  • Size 9.8MB
  • Sample260820-wt38csgq2t
  • SHA256 c722b2a63f9e5d18fc0bf1fb911f9b909e05ddc1ae20f3113b66cfd188dfc760
  • 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 2 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 15 IoCs
  • Drops file in Program Files directory 16 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.

  • Modifies data under HKEY_USERS 9 IoCs
  • Modifies registry class 37 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 7 IoCs
  • Suspicious use of SendNotifyMessage 5 IoCs
  • Suspicious use of SetWindowsHookEx 5 IoCs
  • Suspicious use of WriteProcessMemory 8 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:3704
  • 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:1112
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding D8798459EFB2933B1BF410DF09DBC73C C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:2824
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI8301.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240747546 1 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:3128
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI87A6.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240748484 10 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.CheckMsiMotw
        3⤵
        • Badlisted process makes network request
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:4632
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI807E.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240812281 18 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.CheckMsiFileName
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:4500
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:2704
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding E233BC7C586500B2305C2C1BE984E4E3
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:1380
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 7618B7534206DE6E2209D8BB38E7AE63 E Global\MSI0000
        2⤵
        • Loads dropped DLL
        • Drops file in Windows directory
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:1624
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:5160
    • C:\Program Files (x86)\ScreenConnect Client (77408b84a853a044)\ScreenConnect.ClientService.exe
      "C:\Program Files (x86)\ScreenConnect Client (77408b84a853a044)\ScreenConnect.ClientService.exe" "?e=Access&y=Guest&h=instance-upwztp-relay.screenconnect.com&p=443&s=9717b232-e4ce-4f7e-9c41-25fa3523ce8c&k=BgIAAACkAABSU0ExAAgAAAEAAQCBmQ3GoUdiYetmvebkUDB5%2fvDWS4iELuChw5S%2bDXSLoPXiVMGIEEbtXJk4kUN%2bSFam0jd6zn%2fRgphND2jQkg0wY1tSqsWmfaKYt%2fMhB9DXVpvGn7JuhzwL%2fb%2fHcUHJ%2fp%2b6lJigKHejmb7eDk86M%2b%2bdyxGhMg%2bjeDeXSLw6aqt7czgqEmFw5nfkDh3Iu0bPGgdJWoEEaS%2fhbhzCD079GWc%2bLF0rLp3UR%2bogJ3WfCfl3Eg3AZqdF45yq7DX%2ba%2b%2flQU%2ba%2fJhiOIv42or24u%2btF6cFcBPl%2bWOT11H2tZszjLGPQMuq5Cnq5Rk34Owu1%2f4ijLVtK0zxmxzifqb35pWXjWi5"
      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:1168
      • C:\Program Files (x86)\ScreenConnect Client (77408b84a853a044)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (77408b84a853a044)\ScreenConnect.WindowsClient.exe" "RunRole" "f92f8780-c4f2-475b-9a37-3032cb189cf8" "User"
        2⤵
        • Executes dropped EXE
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        PID:3128

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

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          Downloads

          e5ae522.rbs

          • Path C:\Config.Msi\e5ae522.rbs
          • Size 214KB
          • SHA256 d818c71d45f28734265f97fb687783d09ea355203417418eb6a1da5b3590bbb1
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.en-US.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (77408b84a853a044)\Client.en-US.resources
          • Size 64KB
          • SHA256 a90983b3d26f9e6bb472663b84d13254349f62b0ad4c667fd76b3edd270240b2
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (77408b84a853a044)\Client.resources
          • Size 6KB
          • SHA256 bd34378ad99f7609fa0c7c8edde6337c738a61d288863015629329806a1cc728
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Client.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (77408b84a853a044)\ScreenConnect.Client.dll
          • Size 412KB
          • SHA256 8e5531c2b302f9c95ed32ac7481d3535b6d51147257d317686c07ea1a9cb8362
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (77408b84a853a044)\ScreenConnect.ClientService.dll
          • Size 92KB
          • SHA256 ed32fe0d924959020cbef0534a7ba612e94263ccc74837475f3b5a6a726acad0
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (77408b84a853a044)\ScreenConnect.ClientService.exe
          • Size 93KB
          • SHA256 16b4c273a25526e7262716ebe9d46480962347191a034595f18be740d9ce1e17
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (77408b84a853a044)\ScreenConnect.Core.dll
          • Size 579KB
          • SHA256 f64cb7ab5f105c22348a22e02dd506ff45456884639fee0f322862112860af24
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (77408b84a853a044)\ScreenConnect.Windows.dll
          • Size 1.7MB
          • SHA256 c50d6e8d93ed197dd0cfb647743b42a2a6a9289f6db04092f56cefd6d569663e
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsAuthenticationPackage.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (77408b84a853a044)\ScreenConnect.WindowsAuthenticationPackage.dll
          • Size 254KB
          • SHA256 a5b8f0070201e4f26260af6a25941ea38bd7042aefd48cd68b9acf951fa99ee5
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsClient.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (77408b84a853a044)\ScreenConnect.WindowsClient.exe
          • Size 678KB
          • SHA256 2ad8f126461607aad3fa31a41f1f39bc74f471fd84191b43e205610db2c4cf09
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsClient.exe.config

          • Path C:\Program Files (x86)\ScreenConnect Client (77408b84a853a044)\ScreenConnect.WindowsClient.exe.config
          • Size 266B
          • SHA256 87c640d3184c17d3b446a72d5f13d643a774b4ecc7afbedfd4e8da7795ea8077
          • MD5 SHA1 SHA512 TLSH

          ScreenConnect.WindowsCredentialProvider.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (77408b84a853a044)\ScreenConnect.WindowsCredentialProvider.dll
          • Size 837KB
          • SHA256 4868b7997b9b4260be2df752a81a750388243cdbea37e4d82a9e0101cd29d0c7
          • MD5 SHA1 SHA512 SSDEEP TLSH

          system.config

          • Path C:\Program Files (x86)\ScreenConnect Client (77408b84a853a044)\system.config
          • Size 990B
          • SHA256 45a5cd5b60d56665dc3f5a0547ffe21d5beddf5570658dd66ae26e130f943636
          • MD5 SHA1 SHA512 TLSH

          MSI8301.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\MSI8301.tmp
          • Size 1.1MB
          • SHA256 de867af8055f81b7691f12175deb4c4e7f3bf97130e51761ed02182b0496e16f
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Microsoft.Deployment.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI8301.tmp-\Microsoft.Deployment.WindowsInstaller.dll
          • Size 172KB
          • SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI8301.tmp-\ScreenConnect.Core.dll
          • Size 569KB
          • SHA256 e92d94613443befebb55b08f80d10a2fdbfc58233e8dc95cfb4466fde12964f7
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.InstallerActions.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI8301.tmp-\ScreenConnect.InstallerActions.dll
          • Size 24KB
          • SHA256 d827d3575ca29f8a40ea5379c7df2b315fc72cbd93451de94e199740594b51bb
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI8301.tmp-\ScreenConnect.Windows.dll
          • Size 1.7MB
          • SHA256 320b89343e896a8d2ebf537861d800a9aca88245cc3b5616bb5bea5cc6797fbb
          • MD5 SHA1 SHA512 SSDEEP TLSH

          CustomAction.config

          • Path C:\Users\Admin\AppData\Local\Temp\MSI87A6.tmp-\CustomAction.config
          • Size 234B
          • SHA256 7027b69ab6ebc9f3f7d2f6c800793fde2a057b76010d8cfd831cf440371b2b23
          • MD5 SHA1 SHA512 TLSH

          ScreenConnect.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI87A6.tmp-\ScreenConnect.WindowsInstaller.dll
          • Size 137KB
          • SHA256 dbf379b93127345a83282380aee634d0b70ec731acfeea76617c76e76fdc764f
          • MD5 SHA1 SHA512 SSDEEP TLSH

          MSIEE4A.tmp

          • Path C:\Windows\Installer\MSIEE4A.tmp
          • Size 202KB
          • SHA256 3cff4ac91288a0ff0c13278e73b282a64e83d089c5a61a45d483194ab336b852
          • MD5 SHA1 SHA512 SSDEEP TLSH

          e5ae521.msi

          • Path C:\Windows\Installer\e5ae521.msi
          • Size 9.8MB
          • SHA256 c722b2a63f9e5d18fc0bf1fb911f9b909e05ddc1ae20f3113b66cfd188dfc760
          • MD5 SHA1 SHA512 SSDEEP TLSH

          pbt5tryi.newcfg

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (77408b84a853a044)\pbt5tryi.newcfg
          • Size 880B
          • SHA256 3d3c68a11616f9a88d6de67b99a37802b071a28612b155d8e9959af5b2a47ded
          • MD5 SHA1 SHA512 TLSH

          tlmu421o.newcfg

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (77408b84a853a044)\tlmu421o.newcfg
          • Size 880B
          • SHA256 67ada2d10261de7e924fe8c002d7ef9044c2489db327f1590d33eba1a7243749
          • MD5 SHA1 SHA512 TLSH

          user.config

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (77408b84a853a044)\user.config
          • Size 520B
          • SHA256 a177dab601fb96d0fc24282b3738bc3fa9ba05ef0c0a2d0509ba005e83751424
          • MD5 SHA1 SHA512 TLSH

          user.config

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (77408b84a853a044)\user.config
          • Size 683B
          • SHA256 d95d1339b3487a90c74d61f4ff479a5450894cc86a6fe87f206712e878c3072e
          • MD5 SHA1 SHA512 TLSH

          xj1lsxbi.newcfg

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (77408b84a853a044)\xj1lsxbi.newcfg
          • Size 880B
          • SHA256 ffeac5d446ec92ebac87bd4177b4f29c1fc81e0c1772875ada722434ab747407
          • MD5 SHA1 SHA512 TLSH

          metadata-2

          • Path \??\GLOBALROOT\Device\HarddiskVolumeShadowCopy2\System Volume Information\SPP\metadata-2
          • Size 26.1MB
          • SHA256 63a988a348ed66d970d039ec565d16ffd37ff340e616f8fdbb8a1809f6c98d0d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          {48660fd1-fa6d-4ab2-b531-48c1ec57ea50}_OnDiskSnapshotProp

          • Path \??\Volume{c61fbfff-0000-0000-0000-d08302000000}\System Volume Information\SPP\OnlineMetadataCache\{48660fd1-fa6d-4ab2-b531-48c1ec57ea50}_OnDiskSnapshotProp
          • Size 6KB
          • SHA256 de58c50d0a19ddf40399993455a1313668b30301182d9a55f450a1233be9d453
          • MD5 SHA1 SHA512 SSDEEP TLSH

          memory/1168-142-0x00000000041F0000-0x000000000420A000-memory.dmp

          memory/1168-182-0x00000000047C0000-0x000000000482C000-memory.dmp

          memory/1168-183-0x00000000048D0000-0x0000000004962000-memory.dmp

          memory/1168-165-0x0000000004540000-0x0000000004590000-memory.dmp

          memory/1168-185-0x0000000004500000-0x0000000004541000-memory.dmp

          memory/1168-187-0x0000000004AC0000-0x0000000004B96000-memory.dmp

          memory/1168-148-0x0000000004350000-0x00000000043E4000-memory.dmp

          memory/1168-152-0x00000000045A0000-0x0000000004750000-memory.dmp

          memory/3128-29-0x0000000005DE0000-0x0000000005E74000-memory.dmp

          memory/3128-21-0x0000000005C90000-0x0000000005CBE000-memory.dmp

          memory/3128-205-0x0000000000750000-0x00000000007FE000-memory.dmp

          memory/3128-207-0x0000000001110000-0x000000000117C000-memory.dmp

          memory/3128-208-0x000000001B8A0000-0x000000001B934000-memory.dmp

          memory/3128-209-0x000000001BAF0000-0x000000001BCA0000-memory.dmp

          memory/3128-210-0x0000000001070000-0x000000000108A000-memory.dmp

          memory/3128-211-0x000000001BE30000-0x000000001BFB8000-memory.dmp

          memory/3128-212-0x00000000010A0000-0x00000000010E1000-memory.dmp

          memory/3128-25-0x0000000005CD0000-0x0000000005CDC000-memory.dmp

          memory/3128-33-0x0000000006030000-0x00000000061E0000-memory.dmp

          memory/3128-34-0x00000000067A0000-0x0000000006D5A000-memory.dmp

          memory/4632-64-0x0000000005F40000-0x0000000005F68000-memory.dmp