Analysis

  • max time kernel
    150s
  • max time network
    130s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260911-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    30/09/2026, 18:36

General

  • Target
    ScreenConnect.ClientSetup.exe
  • Size 12.2MB
  • Sample260930-w81e1sfc64
  • SHA256 e5cd200bc798b3acb1db359203f0733327492db95d43c68b5867e525a448f58b
  • 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.

  • 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
  • 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.

  • Drops file in Program Files directory 16 IoCs
  • Drops file in Windows directory 17 IoCs
  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 42 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • 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 9 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 10 IoCs
  • Uses Volume Shadow Copy service COM API

    The Volume Shadow Copy service is used to manage backups/snapshots.

Processes

  • C:\Users\Admin\AppData\Local\Temp\ScreenConnect.ClientSetup.exe
    "C:\Users\Admin\AppData\Local\Temp\ScreenConnect.ClientSetup.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3856
    • C:\Windows\SysWOW64\msiexec.exe
      "C:\Windows\System32\msiexec.exe" /i "C:\Users\Admin\AppData\Local\Temp\ScreenConnect\26.6.5.9742\f9a5d5ce498ddb51\ScreenConnect.ClientSetup.msi" SC_EXE_PATH="C:\Users\Admin\AppData\Local\Temp\ScreenConnect.ClientSetup.exe"
      2⤵
      • Badlisted process makes network request
      • Enumerates connected drives
      • System Location Discovery: System Language Discovery
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SetWindowsHookEx
      PID:2852
  • 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:5872
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding A35FE5DC0CFE5228A0B6271DED24D1D8 C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:4408
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI4C32.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240733421 1 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:108
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI4F5F.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240734078 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:3712
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI550E.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240735562 17 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.CheckMsiFileName
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:5112
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:3492
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 4DB75F11247E51D9803175E17FF15F83
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:5992
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 323CCB1B8E6FAD6F17D364DBFCF602C8 E Global\MSI0000
        2⤵
        • Drops file in Windows directory
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:4868
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:3660
    • C:\Program Files (x86)\ScreenConnect Client (f9a5d5ce498ddb51)\ScreenConnect.ClientService.exe
      "C:\Program Files (x86)\ScreenConnect Client (f9a5d5ce498ddb51)\ScreenConnect.ClientService.exe" "?e=Access&y=Guest&h=instance-yvcecd-relay.screenconnect.com&p=443&s=04235e8b-c6ad-40a9-9a2a-a67952dee68f&k=BgIAAACkAABSU0ExAAgAAAEAAQAlfNHmx6FWO6JPMYNJmFQXEO6RZpNV9HIu1pa9itm6gCmJjGQOoIhToOLpt1b9RgRZ54dG1eQIL1KZ6BOvYn2Az%2bDVEKOQ0dnB0%2bmDDWikTkO9kJBfvVwKZiDiPx1zdqymM9NJcXbyIXCULW8p21tH5lX8e%2bB4w6EekzkfQ562cDWpVnLvWI7YwM37cu%2bG3nDWdtG5hVN33v3Ral0SdGHhR3qNqMCWgkdW%2fFPhj1hfsYMseHkOiRC8l4PABKXmvAAx9EH%2foNOs5i3POTnZuXievDWmRJkgw5oJs8%2bjB1RXk8zgsBA1qmO94mCo3kBxTzcu8hkJ2Vb%2buHNN9o9JVInW"
      1⤵
      • Sets service image path in registry
      • Drops file in System32 directory
      • Executes dropped EXE
      • Loads dropped DLL
      • 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:5704
      • C:\Program Files (x86)\ScreenConnect Client (f9a5d5ce498ddb51)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (f9a5d5ce498ddb51)\ScreenConnect.WindowsClient.exe" "RunRole" "290f269c-2b55-41f8-8203-f191f051e8ee" "User"
        2⤵
        • Executes dropped EXE
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        PID:5328
      • C:\Program Files (x86)\ScreenConnect Client (f9a5d5ce498ddb51)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (f9a5d5ce498ddb51)\ScreenConnect.WindowsClient.exe" "RunRole" "e18598c9-0a0f-4d6c-90ce-2ef2742540e4" "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:3560

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          e59a7a1.rbs

          • Path C:\Config.Msi\e59a7a1.rbs
          • Size 214KB
          • SHA256 898414b046a27d3d5000d8512029349142b9ff35c8a2f6674bd1845155da0f31
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.en-US.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (f9a5d5ce498ddb51)\Client.en-US.resources
          • Size 64KB
          • SHA256 a90983b3d26f9e6bb472663b84d13254349f62b0ad4c667fd76b3edd270240b2
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (f9a5d5ce498ddb51)\Client.resources
          • Size 6KB
          • SHA256 bd34378ad99f7609fa0c7c8edde6337c738a61d288863015629329806a1cc728
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Client.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (f9a5d5ce498ddb51)\ScreenConnect.Client.dll
          • Size 412KB
          • SHA256 27e873d0fceefdd1a12ca77e3bbecec2ece7acdba433b47dca102c35e1c5896c
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (f9a5d5ce498ddb51)\ScreenConnect.ClientService.dll
          • Size 92KB
          • SHA256 78fa9cf69577f6990275c7c472f7114f9d0c85e660f3b9c81b085fc3cfbc8673
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (f9a5d5ce498ddb51)\ScreenConnect.ClientService.exe
          • Size 93KB
          • SHA256 5956f9afb3ba610c38b2cfda88dd15be98783963769a12020c93ce05e749b3c3
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (f9a5d5ce498ddb51)\ScreenConnect.Core.dll
          • Size 582KB
          • SHA256 4eab8752d05cd31bafd07edde7d18061cb63eea99af3132460e6dc08bb5f9e73
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (f9a5d5ce498ddb51)\ScreenConnect.Windows.dll
          • Size 1.7MB
          • SHA256 ec4de5e6e9c079a30a5780d79ee662e0a4c6d009f0e3f911edc560973fb17d1e
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsAuthenticationPackage.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (f9a5d5ce498ddb51)\ScreenConnect.WindowsAuthenticationPackage.dll
          • Size 254KB
          • SHA256 a5b8f0070201e4f26260af6a25941ea38bd7042aefd48cd68b9acf951fa99ee5
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsClient.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (f9a5d5ce498ddb51)\ScreenConnect.WindowsClient.exe
          • Size 685KB
          • SHA256 2763b953657e3c4d6b2f952218a1e1963bcd6971f0b1102d99bb7efea04ceb29
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsCredentialProvider.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (f9a5d5ce498ddb51)\ScreenConnect.WindowsCredentialProvider.dll
          • Size 837KB
          • SHA256 7511e679597572782241ff989c065c02f9f5a12ab37290b69a27226eda57ce75
          • MD5 SHA1 SHA512 SSDEEP TLSH

          system.config

          • Path C:\Program Files (x86)\ScreenConnect Client (f9a5d5ce498ddb51)\system.config
          • Size 960B
          • SHA256 6ea8fc0b67a8dd617076624d080d34bd04767d69779126853d536502b8805d0d
          • MD5 SHA1 SHA512 TLSH

          8EC9B1D0ABBD7F98B401D425828828CE_59E89BCE9615F2B61F2F2C691688F111

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\8EC9B1D0ABBD7F98B401D425828828CE_59E89BCE9615F2B61F2F2C691688F111
          • Size 727B
          • SHA256 e8490aa6062cca5accce1de35d837fd3e812b203c932a7855b385ad9a1051d69
          • MD5 SHA1 SHA512 TLSH

          C8E534EE129F27D55460CE17FD628216_1130D9B25898B0DB0D4F04DC5B93F141

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\C8E534EE129F27D55460CE17FD628216_1130D9B25898B0DB0D4F04DC5B93F141
          • Size 727B
          • SHA256 abfbfbc723ff25914997f9ad5b2cef01b259573d93648869322de8a3008b00bc
          • MD5 SHA1 SHA512 TLSH

          8EC9B1D0ABBD7F98B401D425828828CE_59E89BCE9615F2B61F2F2C691688F111

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\8EC9B1D0ABBD7F98B401D425828828CE_59E89BCE9615F2B61F2F2C691688F111
          • Size 404B
          • SHA256 287dac8a228a72243a2bc4c8a3864148e8d123617cc3870679669bfd0698387b
          • MD5 SHA1 SHA512 TLSH

          C8E534EE129F27D55460CE17FD628216_1130D9B25898B0DB0D4F04DC5B93F141

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\C8E534EE129F27D55460CE17FD628216_1130D9B25898B0DB0D4F04DC5B93F141
          • Size 412B
          • SHA256 4517efe9fddb210692721e0a4e3cd33636b40eb63dbf16e4fc0272c5861a3c7f
          • MD5 SHA1 SHA512 TLSH

          MSI4C32.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\MSI4C32.tmp
          • Size 1.1MB
          • SHA256 400ff5b9a4439339876282909b23c397ffa208f4bcf64460fa2521284acf0b6e
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Microsoft.Deployment.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI4C32.tmp-\Microsoft.Deployment.WindowsInstaller.dll
          • Size 172KB
          • SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI4C32.tmp-\ScreenConnect.Core.dll
          • Size 572KB
          • SHA256 74f2d225b492eb77a5654bcaafec5162d0c5f72de884daa4c32daf54e2bff3d7
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.InstallerActions.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI4C32.tmp-\ScreenConnect.InstallerActions.dll
          • Size 24KB
          • SHA256 2022f13b1f562d3cbef3a3926f0370a2de64e57ff281a121f90001a47499a356
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI4C32.tmp-\ScreenConnect.Windows.dll
          • Size 1.7MB
          • SHA256 93f910f732855000861c1b4e6c55a2dee0a8cbb2172d89c7a2bc99053746c193
          • MD5 SHA1 SHA512 SSDEEP TLSH

          CustomAction.config

          • Path C:\Users\Admin\AppData\Local\Temp\MSI4F5F.tmp-\CustomAction.config
          • Size 234B
          • SHA256 7027b69ab6ebc9f3f7d2f6c800793fde2a057b76010d8cfd831cf440371b2b23
          • MD5 SHA1 SHA512 TLSH

          ScreenConnect.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI4F5F.tmp-\ScreenConnect.WindowsInstaller.dll
          • Size 137KB
          • SHA256 361bbc692084841e4c8d22c89ca89c711d0fe17bc8759241736531a2f28de25b
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientSetup.msi

          • Path C:\Users\Admin\AppData\Local\Temp\ScreenConnect\26.6.5.9742\f9a5d5ce498ddb51\ScreenConnect.ClientSetup.msi
          • Size 9.8MB
          • SHA256 53d696c0f651634584b1e36dc81290f88e468d57ead01eb6d0c4e83188bfad68
          • MD5 SHA1 SHA512 SSDEEP TLSH

          MSIAD6E.tmp

          • Path C:\Windows\Installer\MSIAD6E.tmp
          • Size 202KB
          • SHA256 3cff4ac91288a0ff0c13278e73b282a64e83d089c5a61a45d483194ab336b852
          • MD5 SHA1 SHA512 SSDEEP TLSH

          user.config

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (f9a5d5ce498ddb51)\user.config
          • Size 520B
          • SHA256 a01d3f59e69c98f5e1850ebf21b5dc00ec4a438d4461524fa4129cc631736736
          • MD5 SHA1 SHA512 TLSH

          user.config

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (f9a5d5ce498ddb51)\user.config
          • Size 683B
          • SHA256 686cc0a960fb2c3795e5674eb7744f85630e7404787ef5c1aa67b4b4ecca4ee8
          • MD5 SHA1 SHA512 TLSH

          wk4in4bv.newcfg

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (f9a5d5ce498ddb51)\wk4in4bv.newcfg
          • Size 883B
          • SHA256 28a3af2448f78b679b49064fda7bf6dfc79abbb8beeb5c6cb3178cae55d6e51d
          • MD5 SHA1 SHA512 TLSH

          memory/108-39-0x0000000003D80000-0x0000000003DAE000-memory.dmp

          memory/108-47-0x0000000005F10000-0x0000000005FA6000-memory.dmp

          memory/108-43-0x0000000003DC0000-0x0000000003DCC000-memory.dmp

          memory/108-51-0x0000000006160000-0x0000000006310000-memory.dmp

          memory/3712-81-0x00000000037B0000-0x00000000037D8000-memory.dmp

          memory/3856-8-0x00000000742D0000-0x0000000074A8C000-memory.dmp

          memory/3856-4-0x00000000742D0000-0x0000000074A8C000-memory.dmp

          memory/3856-0-0x00000000742E2000-0x00000000742E3000-memory.dmp

          memory/3856-13-0x00000000742D0000-0x0000000074A8C000-memory.dmp

          memory/3856-11-0x00000000742D0000-0x0000000074A8C000-memory.dmp

          memory/3856-10-0x00000000742D0000-0x0000000074A8C000-memory.dmp

          memory/3856-1-0x0000000005790000-0x0000000005798000-memory.dmp

          memory/3856-7-0x0000000006090000-0x000000000664A000-memory.dmp

          memory/3856-2-0x00000000057B0000-0x00000000057BC000-memory.dmp

          memory/3856-6-0x0000000005910000-0x0000000005AC0000-memory.dmp

          memory/3856-5-0x00000000058E0000-0x0000000005908000-memory.dmp

          memory/3856-3-0x0000000005820000-0x00000000058B6000-memory.dmp

          memory/5328-226-0x000000001B700000-0x000000001B8B0000-memory.dmp

          memory/5328-224-0x000000001B0A0000-0x000000001B10C000-memory.dmp

          memory/5328-223-0x0000000000410000-0x00000000004C0000-memory.dmp

          memory/5328-229-0x000000001BC40000-0x000000001BDC8000-memory.dmp

          memory/5328-227-0x0000000002700000-0x000000000271A000-memory.dmp

          memory/5328-225-0x000000001B4B0000-0x000000001B546000-memory.dmp

          memory/5704-191-0x0000000004260000-0x00000000042CC000-memory.dmp

          memory/5704-174-0x0000000003FE0000-0x0000000004030000-memory.dmp

          memory/5704-162-0x0000000003CE0000-0x0000000003CFA000-memory.dmp

          memory/5704-194-0x0000000004370000-0x0000000004402000-memory.dmp

          memory/5704-198-0x0000000004560000-0x0000000004636000-memory.dmp

          memory/5704-196-0x00000000041F0000-0x0000000004231000-memory.dmp

          memory/5704-172-0x0000000004040000-0x00000000041F0000-memory.dmp

          memory/5704-168-0x0000000003DF0000-0x0000000003E86000-memory.dmp