Analysis

  • max time kernel
    148s
  • 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, 00:24

General

  • Target
    ScreenConnect.ClientSetup.exe
  • Size 12.2MB
  • Sample260930-ap29lsxv9l
  • SHA256 4090cce29ad42a4bfd9449fb788e3defff5ff1a57478722daf09c6476452e8af
  • 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 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
  • 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 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:3300
    • C:\Windows\SysWOW64\msiexec.exe
      "C:\Windows\System32\msiexec.exe" /i "C:\Users\Admin\AppData\Local\Temp\ScreenConnect\26.6.5.9742\8bccb44a76739de2\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:4564
  • 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:4912
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding AB39D362963C51AE194CDBD2A4B45151 C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:3008
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI2282.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240722687 1 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:2864
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI2DED.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240725531 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:1416
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI33E9.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240727062 17 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.CheckMsiFileName
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:264
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:2840
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 07855DCDD0F03443EE9EC06D58A1DFED
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:1244
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding E183056FE0792676D9E7CBCBA77EB5DE E Global\MSI0000
        2⤵
        • Drops file in Windows directory
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:1392
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:2244
    • C:\Program Files (x86)\ScreenConnect Client (8bccb44a76739de2)\ScreenConnect.ClientService.exe
      "C:\Program Files (x86)\ScreenConnect Client (8bccb44a76739de2)\ScreenConnect.ClientService.exe" "?e=Access&y=Guest&h=instance-t1znph-relay.screenconnect.com&p=443&s=e8423c9d-6114-44df-92a5-7c13b2228fda&k=BgIAAACkAABSU0ExAAgAAAEAAQCpiRe5GNumix0AC5VLt2Kfwc0P6ivzScnGg4llPRwnXW5CdAtK3seNbuAuUVUt0tI4giQy4jzJy3vhC1fy3axf0iTdDeOq7BzJWHXsQZrlJ1e0mIyKU6lJbi17NY5cxlkSFFzrZ3flHkDmVnN61q0YHMMafY9iN4gtjv3clPy61i0cRO7il16pAGnNwzKKJYqhLr7e9vkN86YyqzokRMKcJH1cU1k33qZineC7EymvkpYBeV6tzyDbTKfD7u3JbpFA4FuUMBrRHJhNEqkJ5H8iKpGk6pLYV6ymVwvRNQqUcVtFbJI6UhmQqMrdnkBbXPE2BqNu1960gRfRBziUcnDX"
      1⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      PID:1284
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 1284 -s 1340
        2⤵
        • Program crash
        PID:4624
    • C:\Program Files (x86)\ScreenConnect Client (8bccb44a76739de2)\ScreenConnect.ClientService.exe
      "C:\Program Files (x86)\ScreenConnect Client (8bccb44a76739de2)\ScreenConnect.ClientService.exe" "?e=Access&y=Guest&h=instance-t1znph-relay.screenconnect.com&p=443&s=e8423c9d-6114-44df-92a5-7c13b2228fda&k=BgIAAACkAABSU0ExAAgAAAEAAQCpiRe5GNumix0AC5VLt2Kfwc0P6ivzScnGg4llPRwnXW5CdAtK3seNbuAuUVUt0tI4giQy4jzJy3vhC1%2fy3axf0iTdDeOq7BzJWHXsQZrlJ1e0mIyKU6lJbi17NY5cxlkSFFzrZ3flHkDmVnN61q0YHMMa%2fY9iN4gtjv3clPy61i0cRO7il16pAGnNwzKKJYqhLr7e9vkN86YyqzokRMKcJH1cU1k33qZineC7EymvkpYBeV6tzyD%2bTK%2fD7u3JbpFA4FuUMBrRHJhNEqkJ5H8iKpGk6pLYV6ymVwvRNQqUcVtFbJI6UhmQqMrdnkBbXPE2BqNu1960gRfRBziUcnDX"
      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:5944
      • C:\Program Files (x86)\ScreenConnect Client (8bccb44a76739de2)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (8bccb44a76739de2)\ScreenConnect.WindowsClient.exe" "RunRole" "8f2ff8d1-35fa-41f0-9dae-d4d707d20d11" "User"
        2⤵
        • Executes dropped EXE
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        PID:5964
      • C:\Program Files (x86)\ScreenConnect Client (8bccb44a76739de2)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (8bccb44a76739de2)\ScreenConnect.WindowsClient.exe" "RunRole" "cb05bbd2-0344-43be-aac5-aa1c6003694f" "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:4628
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 1284 -ip 1284
      1⤵
        PID:1568

      Network

            MITRE ATT&CK Enterprise v16

            Replay Monitor

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            Downloads

            e5990ed.rbs

            • Path C:\Config.Msi\e5990ed.rbs
            • Size 214KB
            • SHA256 dc88baebd923d2a5fd06a4fa66d72e0dc6234991b2f017c189b4b020f489ac20
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.Client.dll

            • Path C:\Program Files (x86)\ScreenConnect Client (8bccb44a76739de2)\ScreenConnect.Client.dll
            • Size 412KB
            • SHA256 27e873d0fceefdd1a12ca77e3bbecec2ece7acdba433b47dca102c35e1c5896c
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.ClientService.dll

            • Path C:\Program Files (x86)\ScreenConnect Client (8bccb44a76739de2)\ScreenConnect.ClientService.dll
            • Size 92KB
            • SHA256 78fa9cf69577f6990275c7c472f7114f9d0c85e660f3b9c81b085fc3cfbc8673
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.ClientService.exe

            • Path C:\Program Files (x86)\ScreenConnect Client (8bccb44a76739de2)\ScreenConnect.ClientService.exe
            • Size 93KB
            • SHA256 5956f9afb3ba610c38b2cfda88dd15be98783963769a12020c93ce05e749b3c3
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.Core.dll

            • Path C:\Program Files (x86)\ScreenConnect Client (8bccb44a76739de2)\ScreenConnect.Core.dll
            • Size 582KB
            • SHA256 4eab8752d05cd31bafd07edde7d18061cb63eea99af3132460e6dc08bb5f9e73
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.Windows.dll

            • Path C:\Program Files (x86)\ScreenConnect Client (8bccb44a76739de2)\ScreenConnect.Windows.dll
            • Size 1.7MB
            • SHA256 ec4de5e6e9c079a30a5780d79ee662e0a4c6d009f0e3f911edc560973fb17d1e
            • MD5 SHA1 SHA512 SSDEEP TLSH

            system.config

            • Path C:\Program Files (x86)\ScreenConnect Client (8bccb44a76739de2)\system.config
            • Size 952B
            • SHA256 9b68c545431da1cc9c1b9958d1331e4bd0a725de4e12f8940a5972e2b87f41da
            • MD5 SHA1 SHA512 TLSH

            MSI2282.tmp

            • Path C:\Users\Admin\AppData\Local\Temp\MSI2282.tmp
            • Size 1.1MB
            • SHA256 400ff5b9a4439339876282909b23c397ffa208f4bcf64460fa2521284acf0b6e
            • MD5 SHA1 SHA512 SSDEEP TLSH

            Microsoft.Deployment.WindowsInstaller.dll

            • Path C:\Users\Admin\AppData\Local\Temp\MSI2282.tmp-\Microsoft.Deployment.WindowsInstaller.dll
            • Size 172KB
            • SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.Core.dll

            • Path C:\Users\Admin\AppData\Local\Temp\MSI2282.tmp-\ScreenConnect.Core.dll
            • Size 572KB
            • SHA256 74f2d225b492eb77a5654bcaafec5162d0c5f72de884daa4c32daf54e2bff3d7
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.InstallerActions.dll

            • Path C:\Users\Admin\AppData\Local\Temp\MSI2282.tmp-\ScreenConnect.InstallerActions.dll
            • Size 24KB
            • SHA256 2022f13b1f562d3cbef3a3926f0370a2de64e57ff281a121f90001a47499a356
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.Windows.dll

            • Path C:\Users\Admin\AppData\Local\Temp\MSI2282.tmp-\ScreenConnect.Windows.dll
            • Size 1.7MB
            • SHA256 93f910f732855000861c1b4e6c55a2dee0a8cbb2172d89c7a2bc99053746c193
            • MD5 SHA1 SHA512 SSDEEP TLSH

            CustomAction.config

            • Path C:\Users\Admin\AppData\Local\Temp\MSI2DED.tmp-\CustomAction.config
            • Size 234B
            • SHA256 7027b69ab6ebc9f3f7d2f6c800793fde2a057b76010d8cfd831cf440371b2b23
            • MD5 SHA1 SHA512 TLSH

            ScreenConnect.WindowsInstaller.dll

            • Path C:\Users\Admin\AppData\Local\Temp\MSI2DED.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\8bccb44a76739de2\ScreenConnect.ClientSetup.msi
            • Size 9.8MB
            • SHA256 2e9269599a63985a8b6e9f80ea2c736384320de11035252190322b14a18b9134
            • MD5 SHA1 SHA512 SSDEEP TLSH

            MSI97F2.tmp

            • Path C:\Windows\Installer\MSI97F2.tmp
            • Size 202KB
            • SHA256 3cff4ac91288a0ff0c13278e73b282a64e83d089c5a61a45d483194ab336b852
            • MD5 SHA1 SHA512 SSDEEP TLSH

            cd2jgek5.newcfg

            • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (8bccb44a76739de2)\cd2jgek5.newcfg
            • Size 883B
            • SHA256 f7640d304954fac29e1b36f139038ec92df9dd0c63f9336badeee69589a13973
            • MD5 SHA1 SHA512 TLSH

            user.config

            • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (8bccb44a76739de2)\user.config
            • Size 520B
            • SHA256 09f0a39ab4746d4e7e15ad38ae64fd8df592a064e669bb5e2138034b324f30b8
            • MD5 SHA1 SHA512 TLSH

            wfwpwbpo.newcfg

            • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (8bccb44a76739de2)\wfwpwbpo.newcfg
            • Size 683B
            • SHA256 a8cfea69d981861831e4366420380a34f94d01b816be0c47e4b5c42f56334f06
            • MD5 SHA1 SHA512 TLSH

            memory/1284-154-0x0000000001310000-0x000000000132A000-memory.dmp

            memory/1284-161-0x0000000005350000-0x00000000053E6000-memory.dmp

            memory/1416-77-0x00000000033C0000-0x00000000033E8000-memory.dmp

            memory/2864-35-0x0000000003470000-0x000000000349E000-memory.dmp

            memory/2864-43-0x0000000003590000-0x0000000003626000-memory.dmp

            memory/2864-47-0x0000000005850000-0x0000000005A00000-memory.dmp

            memory/2864-39-0x00000000034B0000-0x00000000034BC000-memory.dmp

            memory/3300-7-0x0000000006B70000-0x000000000712A000-memory.dmp

            memory/3300-6-0x0000000074630000-0x0000000074DEC000-memory.dmp

            memory/3300-1-0x0000000003B20000-0x0000000003B28000-memory.dmp

            memory/3300-5-0x0000000006400000-0x00000000065B0000-memory.dmp

            memory/3300-0-0x0000000074642000-0x0000000074643000-memory.dmp

            memory/3300-4-0x0000000003CA0000-0x0000000003CC8000-memory.dmp

            memory/3300-8-0x0000000074630000-0x0000000074DEC000-memory.dmp

            memory/3300-3-0x0000000006330000-0x00000000063C6000-memory.dmp

            memory/3300-2-0x0000000003B40000-0x0000000003B4C000-memory.dmp

            memory/3300-10-0x0000000074630000-0x0000000074DEC000-memory.dmp

            memory/3300-11-0x0000000074630000-0x0000000074DEC000-memory.dmp

            memory/3300-13-0x0000000074630000-0x0000000074DEC000-memory.dmp

            memory/5944-172-0x0000000003F80000-0x0000000004130000-memory.dmp

            memory/5944-205-0x0000000004130000-0x000000000419C000-memory.dmp

            memory/5944-206-0x00000000041A0000-0x0000000004232000-memory.dmp

            memory/5944-208-0x0000000004390000-0x0000000004466000-memory.dmp

            memory/5944-207-0x0000000003ED0000-0x0000000003F11000-memory.dmp

            memory/5944-186-0x0000000003D50000-0x0000000003DA0000-memory.dmp

            memory/5964-223-0x000000001B620000-0x000000001B68C000-memory.dmp

            memory/5964-222-0x0000000000950000-0x0000000000A00000-memory.dmp

            memory/5964-224-0x000000001BAA0000-0x000000001BB36000-memory.dmp

            memory/5964-225-0x000000001BCF0000-0x000000001BEA0000-memory.dmp

            memory/5964-226-0x0000000001380000-0x000000000139A000-memory.dmp

            memory/5964-227-0x000000001C030000-0x000000001C1B8000-memory.dmp