Analysis

  • max time kernel
    149s
  • max time network
    143s
  • 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, 00:13

General

  • Target
    ScreenConnect.ClientSetup.exe
  • Size 14.3MB
  • Sample260910-ahxesabp6y
  • SHA256 fbba1d98d3c9553a2404a22bb8e3bb02fd58d0a3360a5b76b9075bb41b4baa53
  • 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 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 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 17 IoCs
  • Drops file in Windows directory 17 IoCs
  • Executes dropped EXE 4 IoCs
  • Loads dropped DLL 50 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 10 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:5672
    • C:\Windows\SysWOW64\msiexec.exe
      "C:\Windows\System32\msiexec.exe" /i "C:\Users\Admin\AppData\Local\Temp\ScreenConnect\26.6.5.9742\948a0682b613920d\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:4660
  • 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:2416
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding 36398B79B3D304BC882016B8FBCD6D29 C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:4024
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI794D.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240744906 1 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:1204
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI7D65.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240745921 10 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.CheckMsiMotw
        3⤵
        • Badlisted process makes network request
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:4824
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI8342.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240747343 17 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.CheckMsiFileName
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:5988
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:3756
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding A07F2018785406DE288DECEEB6EB08CB
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:3836
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 42E48EF14E060E0329A706C4D6688464 E Global\MSI0000
        2⤵
        • Drops file in Windows directory
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:1124
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:5216
    • C:\Program Files (x86)\ScreenConnect Client (948a0682b613920d)\ScreenConnect.ClientService.exe
      "C:\Program Files (x86)\ScreenConnect Client (948a0682b613920d)\ScreenConnect.ClientService.exe" "?e=Access&y=Guest&h=instance-inq7e1-relay.screenconnect.com&p=443&s=e271e5a9-118f-4734-a36b-bf9de2df135b&k=BgIAAACkAABSU0ExAAgAAAEAAQBRy285Ff7Z9ob2MhYF9xVKyripY9HRvufAlnghsiPhubkYC0fhtb7dYhYVfIbVZrTpoe5tSrGXGggV9wMDoqRPIVewo4jyzzIJhzbpEXBuwTb7fmzwn5qD9gHfvWbSkJUNbdQhsQWysTtoiTbAtGjvAfnPwF5XpNETNNUFiWbJns45rFRkIE1hjJfpzTjVYIejJQUaMEouloRLr7IfYtEq1HFmmIzGjZSz7BJFcHfF9U3Chg8ebUfHCbeGxy3VCuVvILw2peyaywuRLdMz8fkWbTZQtL19jipdJ4HinhsFe5xqnbWQOW8dwbXEjjaa3oOz2Gg9nP1h5zNSeHPAHlDA"
      1⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      PID:1468
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 1468 -s 1336
        2⤵
        • Program crash
        PID:2672
    • C:\Program Files (x86)\ScreenConnect Client (948a0682b613920d)\ScreenConnect.ClientService.exe
      "C:\Program Files (x86)\ScreenConnect Client (948a0682b613920d)\ScreenConnect.ClientService.exe" "?e=Access&y=Guest&h=instance-inq7e1-relay.screenconnect.com&p=443&s=e271e5a9-118f-4734-a36b-bf9de2df135b&k=BgIAAACkAABSU0ExAAgAAAEAAQBRy285F%2f7Z9o%2b2MhYF9xVKyripY9HRvufAlnghsiPhu%2bkYC0fhtb7dYhYVfIbVZrTpoe5tSrGXGggV9wMDoqRPIVewo4jyzzIJhzbpEXBuwTb7%2fmzwn5qD9gHfvW%2bSkJUN%2bdQhsQWysTtoiT%2bAtGjvA%2fnPwF5XpNETNNUFiWbJns45rFRkIE1hjJfpzTjVYIejJQUaMEouloRLr7I%2fYtEq1HFmmIzGjZSz7BJFcHfF9U3Chg8e%2bUfHCbeGxy3VCuVvILw2peyaywuRLdMz8%2fkW%2bTZQtL19jipdJ4HinhsFe5xqn%2bWQOW8dw%2bXEjjaa3oOz2Gg9nP1h5zNSeHPAHlDA"
      1⤵
      • Sets service image path in registry
      • Drops file in System32 directory
      • Executes dropped EXE
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Modifies data under HKEY_USERS
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:5396
      • C:\Program Files (x86)\ScreenConnect Client (948a0682b613920d)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (948a0682b613920d)\ScreenConnect.WindowsClient.exe" "RunRole" "a72e1a50-c758-47a3-9f22-d11f20db9c10" "User"
        2⤵
        • Executes dropped EXE
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        PID:5012
      • C:\Program Files (x86)\ScreenConnect Client (948a0682b613920d)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (948a0682b613920d)\ScreenConnect.WindowsClient.exe" "RunRole" "1fefa4cf-a08d-47c2-adf8-4ec05ac8f9a7" "System"
        2⤵
        • Executes dropped EXE
        • Checks processor information in registry
        • Modifies data under HKEY_USERS
        PID:2756
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 396 -p 1468 -ip 1468
      1⤵
        PID:4116

      Network

            MITRE ATT&CK Enterprise v16

            Replay Monitor

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            Downloads

            e59c4ed.rbs

            • Path C:\Config.Msi\e59c4ed.rbs
            • Size 214KB
            • SHA256 c2b5b92025e98edfb0088c94bb41251fd185ec11d294856073347cc807102622
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.Client.dll

            • Path C:\Program Files (x86)\ScreenConnect Client (948a0682b613920d)\ScreenConnect.Client.dll
            • Size 412KB
            • SHA256 27e873d0fceefdd1a12ca77e3bbecec2ece7acdba433b47dca102c35e1c5896c
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.ClientService.dll

            • Path C:\Program Files (x86)\ScreenConnect Client (948a0682b613920d)\ScreenConnect.ClientService.dll
            • Size 92KB
            • SHA256 78fa9cf69577f6990275c7c472f7114f9d0c85e660f3b9c81b085fc3cfbc8673
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.ClientService.exe

            • Path C:\Program Files (x86)\ScreenConnect Client (948a0682b613920d)\ScreenConnect.ClientService.exe
            • Size 93KB
            • SHA256 5956f9afb3ba610c38b2cfda88dd15be98783963769a12020c93ce05e749b3c3
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.Core.dll

            • Path C:\Program Files (x86)\ScreenConnect Client (948a0682b613920d)\ScreenConnect.Core.dll
            • Size 582KB
            • SHA256 4eab8752d05cd31bafd07edde7d18061cb63eea99af3132460e6dc08bb5f9e73
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.Windows.dll

            • Path C:\Program Files (x86)\ScreenConnect Client (948a0682b613920d)\ScreenConnect.Windows.dll
            • Size 1.7MB
            • SHA256 ec4de5e6e9c079a30a5780d79ee662e0a4c6d009f0e3f911edc560973fb17d1e
            • MD5 SHA1 SHA512 SSDEEP TLSH

            app.config

            • Path C:\Program Files (x86)\ScreenConnect Client (948a0682b613920d)\app.config
            • Size 1KB
            • SHA256 b3369f06d13bca8a10e0870cabd470c48734cd10604ff8a77eb3de17a608f6c4
            • MD5 SHA1 SHA512 TLSH

            system.config

            • Path C:\Program Files (x86)\ScreenConnect Client (948a0682b613920d)\system.config
            • Size 972B
            • SHA256 4af5b05fec9b68783453c53e12c6b2a43253e833d9e384677002a1ccb3ee6f07
            • MD5 SHA1 SHA512 TLSH

            MSI794D.tmp

            • Path C:\Users\Admin\AppData\Local\Temp\MSI794D.tmp
            • Size 1.1MB
            • SHA256 400ff5b9a4439339876282909b23c397ffa208f4bcf64460fa2521284acf0b6e
            • MD5 SHA1 SHA512 SSDEEP TLSH

            Microsoft.Deployment.WindowsInstaller.dll

            • Path C:\Users\Admin\AppData\Local\Temp\MSI794D.tmp-\Microsoft.Deployment.WindowsInstaller.dll
            • Size 172KB
            • SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.Core.dll

            • Path C:\Users\Admin\AppData\Local\Temp\MSI794D.tmp-\ScreenConnect.Core.dll
            • Size 572KB
            • SHA256 74f2d225b492eb77a5654bcaafec5162d0c5f72de884daa4c32daf54e2bff3d7
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.InstallerActions.dll

            • Path C:\Users\Admin\AppData\Local\Temp\MSI794D.tmp-\ScreenConnect.InstallerActions.dll
            • Size 24KB
            • SHA256 2022f13b1f562d3cbef3a3926f0370a2de64e57ff281a121f90001a47499a356
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.Windows.dll

            • Path C:\Users\Admin\AppData\Local\Temp\MSI794D.tmp-\ScreenConnect.Windows.dll
            • Size 1.7MB
            • SHA256 93f910f732855000861c1b4e6c55a2dee0a8cbb2172d89c7a2bc99053746c193
            • MD5 SHA1 SHA512 SSDEEP TLSH

            CustomAction.config

            • Path C:\Users\Admin\AppData\Local\Temp\MSI7D65.tmp-\CustomAction.config
            • Size 234B
            • SHA256 7027b69ab6ebc9f3f7d2f6c800793fde2a057b76010d8cfd831cf440371b2b23
            • MD5 SHA1 SHA512 TLSH

            ScreenConnect.WindowsInstaller.dll

            • Path C:\Users\Admin\AppData\Local\Temp\MSI7D65.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\948a0682b613920d\ScreenConnect.ClientSetup.msi
            • Size 11.8MB
            • SHA256 18f0a3897dcddf82055e19dd1efe56dd8b68357e213dcd1af6bba408932d2cac
            • MD5 SHA1 SHA512 SSDEEP TLSH

            MSICA7B.tmp

            • Path C:\Windows\Installer\MSICA7B.tmp
            • Size 202KB
            • SHA256 3cff4ac91288a0ff0c13278e73b282a64e83d089c5a61a45d483194ab336b852
            • MD5 SHA1 SHA512 SSDEEP TLSH

            nwhnkhwn.newcfg

            • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (948a0682b613920d)\nwhnkhwn.newcfg
            • Size 683B
            • SHA256 7e2f9774f905853bf2ffed558dcd36bf70abd545d3ba23b94ad8a4eb7dd16ba4
            • MD5 SHA1 SHA512 TLSH

            slzewyof.newcfg

            • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (948a0682b613920d)\slzewyof.newcfg
            • Size 883B
            • SHA256 bd7da732deda5162f57226208c6595654650ba3a520621da7622096516ef6558
            • MD5 SHA1 SHA512 TLSH

            user.config

            • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (948a0682b613920d)\user.config
            • Size 520B
            • SHA256 18cbfdc95ce743f2db82074e5a58f6919b568cdd62b828f940bf2e85fae1d1c2
            • MD5 SHA1 SHA512 TLSH

            memory/1204-43-0x00000000061D0000-0x0000000006266000-memory.dmp

            memory/1204-35-0x00000000060C0000-0x00000000060EE000-memory.dmp

            memory/1204-47-0x0000000006420000-0x00000000065D0000-memory.dmp

            memory/1204-39-0x0000000006100000-0x000000000610C000-memory.dmp

            memory/1468-155-0x0000000003360000-0x000000000337A000-memory.dmp

            memory/1468-166-0x0000000005AA0000-0x0000000005B36000-memory.dmp

            memory/2756-229-0x000000001D140000-0x000000001D30A000-memory.dmp

            memory/4824-77-0x0000000005700000-0x0000000005728000-memory.dmp

            memory/5012-227-0x00000000025F0000-0x000000000260A000-memory.dmp

            memory/5012-225-0x000000001B470000-0x000000001B506000-memory.dmp

            memory/5012-223-0x0000000000400000-0x00000000004B0000-memory.dmp

            memory/5012-224-0x000000001B100000-0x000000001B16C000-memory.dmp

            memory/5012-226-0x000000001B7C0000-0x000000001B970000-memory.dmp

            memory/5012-228-0x000000001B970000-0x000000001BAF8000-memory.dmp

            memory/5012-230-0x000000001C800000-0x000000001C9CA000-memory.dmp

            memory/5396-208-0x00000000043E0000-0x0000000004421000-memory.dmp

            memory/5396-209-0x0000000004930000-0x0000000004A06000-memory.dmp

            memory/5396-172-0x00000000044F0000-0x00000000046A0000-memory.dmp

            memory/5396-188-0x0000000004390000-0x00000000043E0000-memory.dmp

            memory/5396-207-0x0000000004740000-0x00000000047D2000-memory.dmp

            memory/5396-206-0x0000000004450000-0x00000000044BC000-memory.dmp

            memory/5672-3-0x0000000005B50000-0x0000000005BE6000-memory.dmp

            memory/5672-4-0x0000000074780000-0x0000000074F3C000-memory.dmp

            memory/5672-1-0x0000000003470000-0x0000000003478000-memory.dmp

            memory/5672-0-0x0000000074792000-0x0000000074793000-memory.dmp

            memory/5672-2-0x00000000034E0000-0x00000000034EC000-memory.dmp

            memory/5672-5-0x0000000005C20000-0x0000000005C48000-memory.dmp

            memory/5672-6-0x0000000005C50000-0x0000000005E00000-memory.dmp

            memory/5672-7-0x0000000074780000-0x0000000074F3C000-memory.dmp

            memory/5672-8-0x00000000063C0000-0x000000000697A000-memory.dmp

            memory/5672-9-0x0000000074780000-0x0000000074F3C000-memory.dmp

            memory/5672-10-0x0000000074780000-0x0000000074F3C000-memory.dmp

            memory/5672-13-0x0000000074780000-0x0000000074F3C000-memory.dmp