Analysis

  • max time kernel
    148s
  • max time network
    141s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260911-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    13/11/2026, 04:24

General

  • Target
    ScreenConnect.ClientSetup.exe
  • Size 12.2MB
  • Sample261113-e1cwbafw2v
  • SHA256 9c7696e3b9f550450d4bdfc931cdb99ae7eb92689e5fd4c4ab4159d6f462a376
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Badlisted process makes network request 1 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 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:2392
    • C:\Windows\SysWOW64\msiexec.exe
      "C:\Windows\System32\msiexec.exe" /i "C:\Users\Admin\AppData\Local\Temp\ScreenConnect\26.7.6.9783\cdeda523c52e4ce6\ScreenConnect.ClientSetup.msi" SC_EXE_PATH="C:\Users\Admin\AppData\Local\Temp\ScreenConnect.ClientSetup.exe"
      2⤵
      • Enumerates connected drives
      • System Location Discovery: System Language Discovery
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SetWindowsHookEx
      PID:5392
  • 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:3764
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding 67DA114B96636A4E9A2F4DAFF2854168 C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:1812
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSIA2DD.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240755562 1 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:3924
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSIA7E0.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240756968 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:5672
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSIAF05.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240758718 17 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.CheckMsiFileName
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:616
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:1904
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding B30939ACB76B6614798CA80085E8ABBE
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:4220
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding B101A8BDAC7186CC7E067836B013E21F E Global\MSI0000
        2⤵
        • Drops file in Windows directory
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:2092
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:3908
    • C:\Program Files (x86)\ScreenConnect Client (cdeda523c52e4ce6)\ScreenConnect.ClientService.exe
      "C:\Program Files (x86)\ScreenConnect Client (cdeda523c52e4ce6)\ScreenConnect.ClientService.exe" "?e=Access&y=Guest&h=instance-w9qzoh-relay.screenconnect.com&p=443&s=f60e8510-9fe3-44aa-ac07-d907508cacfe&k=BgIAAACkAABSU0ExAAgAAAEAAQDhdI5CcTBJzJCGcMzC3Qt3DUV4hP8Fj676ipeQNrJOmphHztpJl0%2fC1trBdjfrlAhZBqDHXgdaesqpNHx0cCjOu9LOND6IijpMKp9W%2fC3%2frYfIM2PIG3uWHYf2S8TnKm%2bqhJCWY0gGzgu8O48ozIYq7WvUpcjd4JeXLHCtevJIjXmW%2bDbrLZOX24qKdYfRnFQM3lZGTTA%2fBZyiLkWfU%2fjTY4sikT5npho6RWAw4j1dPADTMyVHk2Dy89wyECyzC72JAKbhnVxFrXtJYeqF4u%2fvNz9vDeoJhd3MbK9VsSoyMsE5wQcQ6XLqaBAHtqyTXckIVke1iyBFH4PJ%2bIDf7j2h"
      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:4528
      • C:\Program Files (x86)\ScreenConnect Client (cdeda523c52e4ce6)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (cdeda523c52e4ce6)\ScreenConnect.WindowsClient.exe" "RunRole" "6f8ddadb-565e-4a73-944a-748e4b0617d5" "User"
        2⤵
        • Executes dropped EXE
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        PID:3496
      • C:\Program Files (x86)\ScreenConnect Client (cdeda523c52e4ce6)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (cdeda523c52e4ce6)\ScreenConnect.WindowsClient.exe" "RunRole" "3e7f7f76-75a4-418f-83c2-ef9ca925e36f" "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:3288
    • C:\Program Files (x86)\ScreenConnect Client (cdeda523c52e4ce6)\ScreenConnect.ClientService.exe
      "C:\Program Files (x86)\ScreenConnect Client (cdeda523c52e4ce6)\ScreenConnect.ClientService.exe" "?e=Access&y=Guest&h=instance-w9qzoh-relay.screenconnect.com&p=443&s=f60e8510-9fe3-44aa-ac07-d907508cacfe&k=BgIAAACkAABSU0ExAAgAAAEAAQDhdI5CcTBJzJCGcMzC3Qt3DUV4hP8Fj676ipeQNrJOmphHztpJl0fC1trBdjfrlAhZBqDHXgdaesqpNHx0cCjOu9LOND6IijpMKp9WfC3frYfIM2PIG3uWHYf2S8TnKmbqhJCWY0gGzgu8O48ozIYq7WvUpcjd4JeXLHCtevJIjXmWbDbrLZOX24qKdYfRnFQM3lZGTTAfBZyiLkWfUfjTY4sikT5npho6RWAw4j1dPADTMyVHk2Dy89wyECyzC72JAKbhnVxFrXtJYeqF4ufvNz9vDeoJhd3MbK9VsSoyMsE5wQcQ6XLqaBAHtqyTXckIVke1iyBFH4PJbIDf7j2h"
      1⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      PID:2492
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 2492 -s 1336
        2⤵
        • Program crash
        PID:3020
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 2492 -ip 2492
      1⤵
        PID:3176

      Network

            MITRE ATT&CK Enterprise v16

            Replay Monitor

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            Downloads

            e59fd05.rbs

            • Path C:\Config.Msi\e59fd05.rbs
            • Size 214KB
            • SHA256 2fe92c30039ebcc25deb2fd6a6d22c5564c4fb88370da01e3dfd613014692a88
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.Client.dll

            • Path C:\Program Files (x86)\ScreenConnect Client (cdeda523c52e4ce6)\ScreenConnect.Client.dll
            • Size 413KB
            • SHA256 be1e3522a20c244b3e20b4f7bc2fc736b6103c930d6cf8366e0bb97cb82d5241
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.ClientService.dll

            • Path C:\Program Files (x86)\ScreenConnect Client (cdeda523c52e4ce6)\ScreenConnect.ClientService.dll
            • Size 92KB
            • SHA256 67f75a75bc19288cac0071e19e7af4463f2ecf4bb75fe13af80a4f0f57144253
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.ClientService.exe

            • Path C:\Program Files (x86)\ScreenConnect Client (cdeda523c52e4ce6)\ScreenConnect.ClientService.exe
            • Size 93KB
            • SHA256 bc19602c59b0ba4a7a99f791c87298df76d8d62f86a928e112dca285a88a5a77
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.Core.dll

            • Path C:\Program Files (x86)\ScreenConnect Client (cdeda523c52e4ce6)\ScreenConnect.Core.dll
            • Size 583KB
            • SHA256 91ae86fd5439c7d8a54b75cbb60c2ff9bdff84657b962d340d48cdf656c4928d
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.Windows.dll

            • Path C:\Program Files (x86)\ScreenConnect Client (cdeda523c52e4ce6)\ScreenConnect.Windows.dll
            • Size 1.7MB
            • SHA256 9ddaf17f7f802e58c645d42184e0ac33dc755a885bc3637a7d837a4f6ae5fdea
            • MD5 SHA1 SHA512 SSDEEP TLSH

            system.config

            • Path C:\Program Files (x86)\ScreenConnect Client (cdeda523c52e4ce6)\system.config
            • Size 962B
            • SHA256 fc0f9a51185142ff9cb59767462d91edaf0e879d06dac83f28a9d419b70848f9
            • MD5 SHA1 SHA512 TLSH

            MSIA2DD.tmp

            • Path C:\Users\Admin\AppData\Local\Temp\MSIA2DD.tmp
            • Size 1.1MB
            • SHA256 d39e53d74c6840d331b91b9c949db26f7c93a824e9fb104c532346a8c465b6e2
            • MD5 SHA1 SHA512 SSDEEP TLSH

            Microsoft.Deployment.WindowsInstaller.dll

            • Path C:\Users\Admin\AppData\Local\Temp\MSIA2DD.tmp-\Microsoft.Deployment.WindowsInstaller.dll
            • Size 172KB
            • SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.Core.dll

            • Path C:\Users\Admin\AppData\Local\Temp\MSIA2DD.tmp-\ScreenConnect.Core.dll
            • Size 573KB
            • SHA256 399ab0c1bcf2bf0c7618066d676b6958c2a5f4fed2d8f769f0eeea5492720e4f
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.InstallerActions.dll

            • Path C:\Users\Admin\AppData\Local\Temp\MSIA2DD.tmp-\ScreenConnect.InstallerActions.dll
            • Size 24KB
            • SHA256 f35f007dcb154d0346745309630b8cc21fe49638e76dc8dd77a3c62cb0aa754a
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.Windows.dll

            • Path C:\Users\Admin\AppData\Local\Temp\MSIA2DD.tmp-\ScreenConnect.Windows.dll
            • Size 1.7MB
            • SHA256 4c281797c351fed77890634006a51bc3a6c60efa4c831fe21934353f304cdf61
            • MD5 SHA1 SHA512 SSDEEP TLSH

            CustomAction.config

            • Path C:\Users\Admin\AppData\Local\Temp\MSIA7E0.tmp-\CustomAction.config
            • Size 234B
            • SHA256 7027b69ab6ebc9f3f7d2f6c800793fde2a057b76010d8cfd831cf440371b2b23
            • MD5 SHA1 SHA512 TLSH

            ScreenConnect.WindowsInstaller.dll

            • Path C:\Users\Admin\AppData\Local\Temp\MSIA7E0.tmp-\ScreenConnect.WindowsInstaller.dll
            • Size 137KB
            • SHA256 7fcba418fd772a38e420238d49e8301f23caf47eadcef400ecab8738813d9694
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.ClientSetup.msi

            • Path C:\Users\Admin\AppData\Local\Temp\ScreenConnect\26.7.6.9783\cdeda523c52e4ce6\ScreenConnect.ClientSetup.msi
            • Size 9.8MB
            • SHA256 f43d7f8a48b8b942c8a3093c01b3418d1a49bfdd74f04818afbb077c1f729c32
            • MD5 SHA1 SHA512 SSDEEP TLSH

            MSI3DB.tmp

            • Path C:\Windows\Installer\MSI3DB.tmp
            • Size 202KB
            • SHA256 3cff4ac91288a0ff0c13278e73b282a64e83d089c5a61a45d483194ab336b852
            • MD5 SHA1 SHA512 SSDEEP TLSH

            2vlqyba5.newcfg

            • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (cdeda523c52e4ce6)\2vlqyba5.newcfg
            • Size 683B
            • SHA256 6894ad04fc06bc558d9410dd6ca9333f6a56179fb0a44f11ea2cc3ee841f44b2
            • MD5 SHA1 SHA512 TLSH

            5bvqfli5.newcfg

            • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (cdeda523c52e4ce6)\5bvqfli5.newcfg
            • Size 883B
            • SHA256 f75f0ed310f74469949637190d73a251eef5dab310ccf500212c917d3876cfd7
            • MD5 SHA1 SHA512 TLSH

            user.config

            • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (cdeda523c52e4ce6)\user.config
            • Size 520B
            • SHA256 23808b1507f67cf59e3b6fdfc08cb9baa07f88e7bb9ec69dcad1d61ef5c6ad7e
            • MD5 SHA1 SHA512 TLSH

            memory/2392-2-0x0000000005B30000-0x0000000005B3C000-memory.dmp

            memory/2392-4-0x0000000005C50000-0x0000000005C78000-memory.dmp

            memory/2392-1-0x00000000036C0000-0x00000000036C8000-memory.dmp

            memory/2392-9-0x00000000749F0000-0x00000000751AC000-memory.dmp

            memory/2392-7-0x0000000006440000-0x00000000069FA000-memory.dmp

            memory/2392-12-0x00000000749F0000-0x00000000751AC000-memory.dmp

            memory/2392-0-0x0000000074A02000-0x0000000074A03000-memory.dmp

            memory/2392-8-0x00000000749F0000-0x00000000751AC000-memory.dmp

            memory/2392-6-0x00000000749F0000-0x00000000751AC000-memory.dmp

            memory/2392-3-0x0000000005BA0000-0x0000000005C36000-memory.dmp

            memory/2392-5-0x0000000005CD0000-0x0000000005E80000-memory.dmp

            memory/2392-11-0x00000000749F0000-0x00000000751AC000-memory.dmp

            memory/2492-172-0x0000000005B10000-0x0000000005CC0000-memory.dmp

            memory/3496-227-0x00000000025F0000-0x000000000260A000-memory.dmp

            memory/3496-228-0x000000001BBC0000-0x000000001BD48000-memory.dmp

            memory/3496-229-0x0000000002630000-0x0000000002671000-memory.dmp

            memory/3496-226-0x000000001B880000-0x000000001BA30000-memory.dmp

            memory/3496-225-0x000000001B630000-0x000000001B6C6000-memory.dmp

            memory/3496-223-0x0000000000520000-0x00000000005D0000-memory.dmp

            memory/3496-224-0x00000000027C0000-0x000000000282C000-memory.dmp

            memory/3924-41-0x00000000037B0000-0x0000000003846000-memory.dmp

            memory/3924-37-0x00000000036C0000-0x00000000036CC000-memory.dmp

            memory/3924-45-0x0000000005A60000-0x0000000005C10000-memory.dmp

            memory/3924-33-0x00000000036E0000-0x000000000370E000-memory.dmp

            memory/4528-208-0x0000000004690000-0x0000000004766000-memory.dmp

            memory/4528-206-0x00000000044A0000-0x0000000004532000-memory.dmp

            memory/4528-207-0x00000000040D0000-0x0000000004111000-memory.dmp

            memory/4528-205-0x0000000004390000-0x00000000043FC000-memory.dmp

            memory/4528-184-0x0000000004110000-0x0000000004160000-memory.dmp

            memory/4528-163-0x0000000003F20000-0x0000000003FB6000-memory.dmp

            memory/4528-153-0x00000000018F0000-0x000000000190A000-memory.dmp

            memory/5672-75-0x00000000058B0000-0x00000000058D8000-memory.dmp