Analysis

  • max time kernel
    148s
  • max time network
    146s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    07/09/2026, 18:21

General

  • Target
    ScreenConnect.ClientSetup.exe
  • Size 12.2MB
  • Sample260907-wznd4aek21
  • SHA256 57cf81533546785a6340b393330eb5cad02d8a27a95241f6940a702a42e3b4fd
  • 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 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).

  • 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:3836
    • C:\Windows\SysWOW64\msiexec.exe
      "C:\Windows\System32\msiexec.exe" /i "C:\Users\Admin\AppData\Local\Temp\ScreenConnect\26.6.5.9742\5a0829f1c32c73db\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:4296
  • 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:1308
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding 88C8300E6FC7CF4E0AC0A822E5B71BFD C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:5800
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSIDC6C.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240770437 1 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:1568
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSIE19D.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240771640 10 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.CheckMsiMotw
        3⤵
        • Badlisted process makes network request
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:3616
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSIE8D2.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240773609 17 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.CheckMsiFileName
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:5860
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:4768
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 49795F7506C816BF8DD36D65479A70FB
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:1964
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 30D0304C3F1CEB92ECF87250744FF6F6 E Global\MSI0000
        2⤵
        • Drops file in Windows directory
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:4788
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:1540
    • C:\Program Files (x86)\ScreenConnect Client (5a0829f1c32c73db)\ScreenConnect.ClientService.exe
      "C:\Program Files (x86)\ScreenConnect Client (5a0829f1c32c73db)\ScreenConnect.ClientService.exe" "?e=Access&y=Guest&h=instance-a3uueu-relay.screenconnect.com&p=443&s=ee29bbaf-0e9e-462f-8d50-6b018ffc2439&k=BgIAAACkAABSU0ExAAgAAAEAAQBhkVx3micm1d3XkTIEnC94jWPulcT9imEb%2feAVfzWjfwPr3h93WyPTiUD1ozD9zPb3njtVIYCp5GsjGRKBZm8UJncx08%2fC0Wj81xYIt21tvimlL4t%2bh9AZQfDyQ44tAjeEsSB%2bEfSYpGm8atcmDYTfIjYIHGlWSjjk4PVEN42cVr2J2KCcojBCMdWt4yiSitb%2bwAccllYpqVoFxrULgX%2bIkimIoi3H78qn98Vm9wSV84CUMcXsQrwcgoPe%2fwRZ9Yig5HdeZB9SryaYtif%2fLtcR8PlA1RwVp4DMQhOMsZp9KGpMBGnDRpmV2bKtYLE6jX%2fCfhibdckqdZdUa2yBQWbb"
      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:4784
      • C:\Program Files (x86)\ScreenConnect Client (5a0829f1c32c73db)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (5a0829f1c32c73db)\ScreenConnect.WindowsClient.exe" "RunRole" "a07a7ecb-4272-4f3a-b3f5-8b68de40548c" "User"
        2⤵
        • Executes dropped EXE
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        PID:2932
      • C:\Program Files (x86)\ScreenConnect Client (5a0829f1c32c73db)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (5a0829f1c32c73db)\ScreenConnect.WindowsClient.exe" "RunRole" "176ad738-44b8-4e73-b17b-eca3f43b26dd" "System"
        2⤵
        • Executes dropped EXE
        • Checks processor information in registry
        • Modifies data under HKEY_USERS
        PID:2356

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

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          Downloads

          e5a3720.rbs

          • Path C:\Config.Msi\e5a3720.rbs
          • Size 214KB
          • SHA256 1c4657ad0c48e00602b3c0e8a69cc8ae279f8e2f566a140b8f27c861806aab83
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.en-US.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (5a0829f1c32c73db)\Client.en-US.resources
          • Size 64KB
          • SHA256 a90983b3d26f9e6bb472663b84d13254349f62b0ad4c667fd76b3edd270240b2
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (5a0829f1c32c73db)\Client.resources
          • Size 6KB
          • SHA256 bd34378ad99f7609fa0c7c8edde6337c738a61d288863015629329806a1cc728
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Client.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (5a0829f1c32c73db)\ScreenConnect.Client.dll
          • Size 412KB
          • SHA256 27e873d0fceefdd1a12ca77e3bbecec2ece7acdba433b47dca102c35e1c5896c
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (5a0829f1c32c73db)\ScreenConnect.ClientService.dll
          • Size 92KB
          • SHA256 78fa9cf69577f6990275c7c472f7114f9d0c85e660f3b9c81b085fc3cfbc8673
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (5a0829f1c32c73db)\ScreenConnect.ClientService.exe
          • Size 93KB
          • SHA256 5956f9afb3ba610c38b2cfda88dd15be98783963769a12020c93ce05e749b3c3
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (5a0829f1c32c73db)\ScreenConnect.Core.dll
          • Size 582KB
          • SHA256 4eab8752d05cd31bafd07edde7d18061cb63eea99af3132460e6dc08bb5f9e73
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (5a0829f1c32c73db)\ScreenConnect.Windows.dll
          • Size 1.7MB
          • SHA256 ec4de5e6e9c079a30a5780d79ee662e0a4c6d009f0e3f911edc560973fb17d1e
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsAuthenticationPackage.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (5a0829f1c32c73db)\ScreenConnect.WindowsAuthenticationPackage.dll
          • Size 254KB
          • SHA256 a5b8f0070201e4f26260af6a25941ea38bd7042aefd48cd68b9acf951fa99ee5
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsClient.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (5a0829f1c32c73db)\ScreenConnect.WindowsClient.exe
          • Size 685KB
          • SHA256 2763b953657e3c4d6b2f952218a1e1963bcd6971f0b1102d99bb7efea04ceb29
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsClient.exe.config

          • Path C:\Program Files (x86)\ScreenConnect Client (5a0829f1c32c73db)\ScreenConnect.WindowsClient.exe.config
          • Size 266B
          • SHA256 87c640d3184c17d3b446a72d5f13d643a774b4ecc7afbedfd4e8da7795ea8077
          • MD5 SHA1 SHA512 TLSH

          ScreenConnect.WindowsCredentialProvider.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (5a0829f1c32c73db)\ScreenConnect.WindowsCredentialProvider.dll
          • Size 837KB
          • SHA256 7511e679597572782241ff989c065c02f9f5a12ab37290b69a27226eda57ce75
          • MD5 SHA1 SHA512 SSDEEP TLSH

          system.config

          • Path C:\Program Files (x86)\ScreenConnect Client (5a0829f1c32c73db)\system.config
          • Size 962B
          • SHA256 4df39f5f40aa987762d2f6a706f5744977467886b06e4ca917c489c844176a82
          • MD5 SHA1 SHA512 TLSH

          MSIDC6C.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\MSIDC6C.tmp
          • Size 1.1MB
          • SHA256 400ff5b9a4439339876282909b23c397ffa208f4bcf64460fa2521284acf0b6e
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Microsoft.Deployment.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSIDC6C.tmp-\Microsoft.Deployment.WindowsInstaller.dll
          • Size 172KB
          • SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSIDC6C.tmp-\ScreenConnect.Core.dll
          • Size 572KB
          • SHA256 74f2d225b492eb77a5654bcaafec5162d0c5f72de884daa4c32daf54e2bff3d7
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.InstallerActions.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSIDC6C.tmp-\ScreenConnect.InstallerActions.dll
          • Size 24KB
          • SHA256 2022f13b1f562d3cbef3a3926f0370a2de64e57ff281a121f90001a47499a356
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSIDC6C.tmp-\ScreenConnect.Windows.dll
          • Size 1.7MB
          • SHA256 93f910f732855000861c1b4e6c55a2dee0a8cbb2172d89c7a2bc99053746c193
          • MD5 SHA1 SHA512 SSDEEP TLSH

          CustomAction.config

          • Path C:\Users\Admin\AppData\Local\Temp\MSIE19D.tmp-\CustomAction.config
          • Size 234B
          • SHA256 7027b69ab6ebc9f3f7d2f6c800793fde2a057b76010d8cfd831cf440371b2b23
          • MD5 SHA1 SHA512 TLSH

          ScreenConnect.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSIE19D.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\5a0829f1c32c73db\ScreenConnect.ClientSetup.msi
          • Size 9.8MB
          • SHA256 5f4f090c7e86a3f829cd81a7eda485212203c345aec9841c7d38d761aa5a2083
          • MD5 SHA1 SHA512 SSDEEP TLSH

          MSI3D4A.tmp

          • Path C:\Windows\Installer\MSI3D4A.tmp
          • Size 202KB
          • SHA256 3cff4ac91288a0ff0c13278e73b282a64e83d089c5a61a45d483194ab336b852
          • MD5 SHA1 SHA512 SSDEEP TLSH

          iv3y2alz.newcfg

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (5a0829f1c32c73db)\iv3y2alz.newcfg
          • Size 880B
          • SHA256 478453b53b620f41fa15bae35c9af51e49fce42b5e9c009e77c065ed26612a3f
          • MD5 SHA1 SHA512 TLSH

          user.config

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (5a0829f1c32c73db)\user.config
          • Size 683B
          • SHA256 ccfb219fb17b6ccb8a79a20555145a920396894aa8a3b51374825a4656e800ee
          • MD5 SHA1 SHA512 TLSH

          user.config

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (5a0829f1c32c73db)\user.config
          • Size 520B
          • SHA256 d6f64326a814f9695f5fa8a31b41225fbdcc48e2db7f62ddf81b012194c74cae
          • MD5 SHA1 SHA512 TLSH

          memory/1308-227-0x0000027187F30000-0x00000271888D4000-memory.dmp

          memory/1568-47-0x0000000006200000-0x00000000063B0000-memory.dmp

          memory/1568-39-0x0000000003EB0000-0x0000000003EBC000-memory.dmp

          memory/1568-43-0x0000000005FB0000-0x0000000006046000-memory.dmp

          memory/1568-35-0x0000000005EE0000-0x0000000005F0E000-memory.dmp

          memory/2356-226-0x0000000002CC0000-0x0000000002D01000-memory.dmp

          memory/2932-221-0x000000001C2B0000-0x000000001C460000-memory.dmp

          memory/2932-222-0x0000000003040000-0x000000000305A000-memory.dmp

          memory/2932-220-0x000000001C060000-0x000000001C0F6000-memory.dmp

          memory/2932-223-0x000000001C5F0000-0x000000001C778000-memory.dmp

          memory/2932-218-0x00000000030F0000-0x000000000315C000-memory.dmp

          memory/2932-224-0x0000000003060000-0x00000000030A1000-memory.dmp

          memory/2932-217-0x0000000000F60000-0x0000000001010000-memory.dmp

          memory/3616-77-0x0000000003AC0000-0x0000000003AE8000-memory.dmp

          memory/3836-9-0x0000000074960000-0x000000007511C000-memory.dmp

          memory/3836-7-0x0000000006330000-0x00000000068EA000-memory.dmp

          memory/3836-5-0x0000000005BC0000-0x0000000005D70000-memory.dmp

          memory/3836-13-0x0000000074960000-0x000000007511C000-memory.dmp

          memory/3836-0-0x0000000074972000-0x0000000074973000-memory.dmp

          memory/3836-11-0x0000000074960000-0x000000007511C000-memory.dmp

          memory/3836-4-0x0000000005B60000-0x0000000005B88000-memory.dmp

          memory/3836-3-0x0000000005AC0000-0x0000000005B56000-memory.dmp

          memory/3836-2-0x00000000033F0000-0x00000000033FC000-memory.dmp

          memory/3836-8-0x0000000074960000-0x000000007511C000-memory.dmp

          memory/3836-1-0x0000000001BE0000-0x0000000001BE8000-memory.dmp

          memory/3836-6-0x0000000074960000-0x000000007511C000-memory.dmp

          memory/4784-197-0x0000000003CE0000-0x0000000003D21000-memory.dmp

          memory/4784-177-0x0000000003C90000-0x0000000003CE0000-memory.dmp

          memory/4784-164-0x0000000003D90000-0x0000000003F40000-memory.dmp

          memory/4784-160-0x0000000003B40000-0x0000000003BD6000-memory.dmp

          memory/4784-194-0x0000000003F40000-0x0000000003FAC000-memory.dmp

          memory/4784-154-0x0000000003A80000-0x0000000003A9A000-memory.dmp

          memory/4784-195-0x0000000003FB0000-0x0000000004042000-memory.dmp

          memory/4784-199-0x00000000041A0000-0x0000000004276000-memory.dmp