Analysis

  • max time kernel
    149s
  • max time network
    129s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260911-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    25/09/2026, 18:21

General

  • Target
    ScreenConnect.ClientSetup.msi
  • Size 16.2MB
  • Sample260925-wzsc2sgf53
  • SHA256 5d0d8a2efa7007e1717f0c5b3827f68592029e0c994588d21ae5f4497eca0341
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Badlisted process makes network request 2 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 47 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 9 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
  • Reads the TCP/IP host and domain name from the registry 1 TTPs 6 IoCs

    The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.

  • 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 13 IoCs
  • Modifies registry class 37 IoCs
  • Suspicious behavior: EnumeratesProcesses 8 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 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:5564
  • 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:2052
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding 71BD204FF58CE214D2E59696CD603D48 C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:4972
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI8469.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240748031 1 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:2668
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI8DB1.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240750406 10 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.CheckMsiMotw
        3⤵
        • Badlisted process makes network request
        • Loads dropped DLL
        • Reads the TCP/IP host and domain name from the registry
        • System Location Discovery: System Language Discovery
        PID:6048
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI9860.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240753062 17 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.CheckMsiFileName
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:2000
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:2240
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding DB5C5A701E3EB46684A29FDBA3F61ECF
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:2916
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 3550B12CD364CB54579398B60BC822C0 E Global\MSI0000
        2⤵
        • Loads dropped DLL
        • Drops file in Windows directory
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:6068
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:5072
    • C:\Program Files (x86)\ScreenConnect Client (88e2de44f57dd79d)\ScreenConnect.ClientService.exe
      "C:\Program Files (x86)\ScreenConnect Client (88e2de44f57dd79d)\ScreenConnect.ClientService.exe" "?e=Access&y=Guest&h=instance-mu4rll-relay.screenconnect.com&p=443&s=18f8f63a-eb40-4127-9adc-3994851de03a&k=BgIAAACkAABSU0ExAAgAAAEAAQB9hAc5rjQWd65tjrc%2b%2bqEN%2bOMatE1SJufl%2fKRahue6XPqbaO3G0r%2faJwgGLJExBQvAedf4ypogkMXFmHuYvhT9Y6pkvGIcHrx5fwMnMFPv2PVo57ZKoLgUF7Wisd2HHO6U0jO85Ns%2fk3hKuzyQNyxktlqfvLvrHQnafPkOk54I%2bpsVosmoP6mGTBfNb%2ftgopOk%2fcXY%2fW%2bqMDOG3wXhr%2fDxk%2fwT79UDnpSN4VznzZYd0dsD1nv9IvswR3lwJJRbAEqDFfmc7vEmaL7APYkbseTTMQj1CpYzgsPkWrKsoakRjp2jlGeWUfjYCvWQHAcLZLKFalMOzPJpHnngQ79dHc%2b6"
      1⤵
      • Sets service image path in registry
      • Executes dropped EXE
      • Loads dropped DLL
      • Drops file in System32 directory
      • Reads the TCP/IP host and domain name from the registry
      • System Location Discovery: System Language Discovery
      • Modifies data under HKEY_USERS
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:1256
      • C:\Program Files (x86)\ScreenConnect Client (88e2de44f57dd79d)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (88e2de44f57dd79d)\ScreenConnect.WindowsClient.exe" "RunRole" "162c4d85-64b4-4a06-8da0-a02534da6640" "User"
        2⤵
        • Executes dropped EXE
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        PID:2340
      • C:\Program Files (x86)\ScreenConnect Client (88e2de44f57dd79d)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (88e2de44f57dd79d)\ScreenConnect.WindowsClient.exe" "RunRole" "94c609af-f9d1-4f4f-be32-fb315e2b324c" "System"
        2⤵
        • Executes dropped EXE
        • Reads the TCP/IP host and domain name from the registry
        • Checks processor information in registry
        • Modifies data under HKEY_USERS
        PID:4380

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

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          Downloads

          e5a0746.rbs

          • Path C:\Config.Msi\e5a0746.rbs
          • Size 214KB
          • SHA256 63beff8e9c158f2c6080dc7aea97cc8ed39d912f76d7afb66509d4ad957d2e97
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.en-US.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (88e2de44f57dd79d)\Client.en-US.resources
          • Size 64KB
          • SHA256 a90983b3d26f9e6bb472663b84d13254349f62b0ad4c667fd76b3edd270240b2
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (88e2de44f57dd79d)\Client.resources
          • Size 6KB
          • SHA256 bd34378ad99f7609fa0c7c8edde6337c738a61d288863015629329806a1cc728
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Client.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (88e2de44f57dd79d)\ScreenConnect.Client.dll
          • Size 615KB
          • SHA256 787a02b1938e8c1ce52448b8779d2c9c47029664f97185177c2584e8f980abc4
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (88e2de44f57dd79d)\ScreenConnect.ClientService.dll
          • Size 176KB
          • SHA256 579fa008b8c96612163fd8a89a978140a652b3739867772df0711fca148705aa
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (88e2de44f57dd79d)\ScreenConnect.ClientService.exe
          • Size 93KB
          • SHA256 d887f20ec383d7ce3a5727856bf7fa68ceb972108b6d0a5dd9924707e820dc24
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (88e2de44f57dd79d)\ScreenConnect.Core.dll
          • Size 1.3MB
          • SHA256 5b2d14e237485c0164d865d8a94f8a8bed28ab0db52c6a7ef99f7ebb9648d324
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (88e2de44f57dd79d)\ScreenConnect.Windows.dll
          • Size 1.9MB
          • SHA256 88dd22f6f0ca70d10c64ca919b0d8b6d73e84c1d567d4b8d15b6e9a9b60d6d8f
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsAuthenticationPackage.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (88e2de44f57dd79d)\ScreenConnect.WindowsAuthenticationPackage.dll
          • Size 254KB
          • SHA256 a5b8f0070201e4f26260af6a25941ea38bd7042aefd48cd68b9acf951fa99ee5
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsClient.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (88e2de44f57dd79d)\ScreenConnect.WindowsClient.exe
          • Size 1.6MB
          • SHA256 b7a495f517b9bf23f529552b145121f922ab4915e24b663ae68b3007daea3804
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsClient.exe.config

          • Path C:\Program Files (x86)\ScreenConnect Client (88e2de44f57dd79d)\ScreenConnect.WindowsClient.exe.config
          • Size 266B
          • SHA256 87c640d3184c17d3b446a72d5f13d643a774b4ecc7afbedfd4e8da7795ea8077
          • MD5 SHA1 SHA512 TLSH

          ScreenConnect.WindowsCredentialProvider.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (88e2de44f57dd79d)\ScreenConnect.WindowsCredentialProvider.dll
          • Size 837KB
          • SHA256 239377f4d2345d2a4ff6e3cbebd83c6edb06db4daea389159d19770a2dfcb80c
          • MD5 SHA1 SHA512 SSDEEP TLSH

          system.config

          • Path C:\Program Files (x86)\ScreenConnect Client (88e2de44f57dd79d)\system.config
          • Size 972B
          • SHA256 f45156bef5f43245ebc25841f55cdef2439ccfd4050a1f512318b1ba88799a54
          • MD5 SHA1 SHA512 TLSH

          MSI8469.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\MSI8469.tmp
          • Size 1.9MB
          • SHA256 1dabfa60015c186a4315f16d46d9e53435dc259c52843e73dac0d04be92f9a84
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Microsoft.Deployment.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI8469.tmp-\Microsoft.Deployment.WindowsInstaller.dll
          • Size 172KB
          • SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI8469.tmp-\ScreenConnect.Core.dll
          • Size 1.3MB
          • SHA256 e5fd82d18c2dcaadbfc4b72b56573e819cc3e8ee6406f2edb982cc073dc607bb
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.InstallerActions.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI8469.tmp-\ScreenConnect.InstallerActions.dll
          • Size 24KB
          • SHA256 cf8505204b1458dac9cb3002fd5bbd5fac43c5b4702aa0153fb4b9a2cfcf954a
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI8469.tmp-\ScreenConnect.Windows.dll
          • Size 1.8MB
          • SHA256 ed1b4eb6c24c85392f692bf5863d9ccb76575051bb605360961b9d7624a371c6
          • MD5 SHA1 SHA512 SSDEEP TLSH

          CustomAction.config

          • Path C:\Users\Admin\AppData\Local\Temp\MSI8DB1.tmp-\CustomAction.config
          • Size 234B
          • SHA256 7027b69ab6ebc9f3f7d2f6c800793fde2a057b76010d8cfd831cf440371b2b23
          • MD5 SHA1 SHA512 TLSH

          ScreenConnect.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI8DB1.tmp-\ScreenConnect.WindowsInstaller.dll
          • Size 390KB
          • SHA256 c469358d585fa9f1637a02d194e162e454d90b8dc7e4939f88b36e09b04a7a96
          • MD5 SHA1 SHA512 SSDEEP TLSH

          MSI106D.tmp

          • Path C:\Windows\Installer\MSI106D.tmp
          • Size 202KB
          • SHA256 3cff4ac91288a0ff0c13278e73b282a64e83d089c5a61a45d483194ab336b852
          • MD5 SHA1 SHA512 SSDEEP TLSH

          e5a0745.msi

          • Path C:\Windows\Installer\e5a0745.msi
          • Size 16.2MB
          • SHA256 5d0d8a2efa7007e1717f0c5b3827f68592029e0c994588d21ae5f4497eca0341
          • MD5 SHA1 SHA512 SSDEEP TLSH

          3n4co2q4.newcfg

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (88e2de44f57dd79d)\3n4co2q4.newcfg
          • Size 882B
          • SHA256 d6f5385def11f84d47834d4514cbcbae588900a3cbda707a85e04c8bb395972f
          • MD5 SHA1 SHA512 TLSH

          user.config

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (88e2de44f57dd79d)\user.config
          • Size 520B
          • SHA256 e3daa285e4876b35163d1e1327fb87f8b56e6c97f2b1c9078e9c72396675b072
          • MD5 SHA1 SHA512 TLSH

          user.config

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (88e2de44f57dd79d)\user.config
          • Size 683B
          • SHA256 459b43df132f163aca6a104bd2de6a56872854acbc6db90d784fd7e463ef1176
          • MD5 SHA1 SHA512 TLSH

          metadata-2

          • Path \??\GLOBALROOT\Device\HarddiskVolumeShadowCopy2\System Volume Information\SPP\metadata-2
          • Size 26.1MB
          • SHA256 1d6779e9d72e60804ed77a1371260ac8d23d6e0c8fdd51d33626cd147e5dcacb
          • MD5 SHA1 SHA512 SSDEEP TLSH

          {1ae7f790-8587-44b1-aa5c-6a4ecfa2b3bb}_OnDiskSnapshotProp

          • Path \??\Volume{e42a0d43-0000-0000-0000-d08302000000}\System Volume Information\SPP\OnlineMetadataCache\{1ae7f790-8587-44b1-aa5c-6a4ecfa2b3bb}_OnDiskSnapshotProp
          • Size 6KB
          • SHA256 69740eaa7dcb3b689722556ad83ebb638b057de365f16717c3b9302f13e9b340
          • MD5 SHA1 SHA512 SSDEEP TLSH

          memory/1256-164-0x0000000004AD0000-0x0000000004B20000-memory.dmp

          memory/1256-147-0x0000000004870000-0x00000000049CA000-memory.dmp

          memory/1256-181-0x0000000004E30000-0x0000000004ECE000-memory.dmp

          memory/1256-184-0x0000000004830000-0x0000000004871000-memory.dmp

          memory/1256-186-0x00000000050C0000-0x0000000005196000-memory.dmp

          memory/1256-141-0x0000000002220000-0x0000000002250000-memory.dmp

          memory/1256-182-0x0000000004ED0000-0x0000000004F62000-memory.dmp

          memory/1256-151-0x0000000004BB0000-0x0000000004D90000-memory.dmp

          memory/2052-189-0x0000016D393F0000-0x0000016D39D94000-memory.dmp

          memory/2340-207-0x000000001B890000-0x000000001B92E000-memory.dmp

          memory/2340-209-0x000000001C0D0000-0x000000001C2B0000-memory.dmp

          memory/2340-212-0x0000000001340000-0x0000000001381000-memory.dmp

          memory/2340-211-0x0000000001400000-0x0000000001430000-memory.dmp

          memory/2340-206-0x0000000000940000-0x0000000000AD6000-memory.dmp

          memory/2340-210-0x000000001C2B0000-0x000000001C438000-memory.dmp

          memory/2340-208-0x000000001BD90000-0x000000001BEEA000-memory.dmp

          memory/2668-29-0x0000000005CC0000-0x0000000005E1A000-memory.dmp

          memory/2668-33-0x0000000006000000-0x00000000061E0000-memory.dmp

          memory/2668-21-0x00000000039C0000-0x00000000039EE000-memory.dmp

          memory/2668-25-0x0000000003A00000-0x0000000003A0C000-memory.dmp

          memory/2668-34-0x00000000067A0000-0x0000000006D5A000-memory.dmp

          memory/4380-214-0x0000000002AC0000-0x0000000002B01000-memory.dmp

          memory/6048-64-0x00000000035A0000-0x0000000003608000-memory.dmp