Analysis

  • max time kernel
    148s
  • max time network
    149s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    24/08/2026, 12:19

General

  • Target
    ScreenConnect.ClientSetup.exe
  • Size 12.2MB
  • Sample260824-pg778atsby
  • SHA256 60de123d2e158c44026792a9e500d15ea21d949e990aa5ea3bad269ce2ef2960
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Badlisted process makes network request 4 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 18 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 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.

  • Modifies data under HKEY_USERS 9 IoCs
  • Modifies registry class 37 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 11 IoCs
  • Suspicious use of SendNotifyMessage 9 IoCs
  • Suspicious use of SetWindowsHookEx 5 IoCs
  • Suspicious use of WriteProcessMemory 9 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:2704
    • C:\Windows\SysWOW64\msiexec.exe
      "C:\Windows\System32\msiexec.exe" /i "C:\Users\Admin\AppData\Local\Temp\ScreenConnect\26.4.3.9662\66e957d7072056a3\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:2540
  • 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:2808
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding 3A3F5553CE8F9181279B5CF194D83DA4 C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:4304
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI6C1E.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240741687 1 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:4920
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI6F8A.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240742312 11 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.CheckMsiMotw
        3⤵
        • Badlisted process makes network request
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:3272
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI69E9.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240806500 19 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.CheckMsiFileName
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:1488
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:2800
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding A391494DB925986E5296C29A1687DFCC
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:4748
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 3AECC97416365C3E49349EC2D65F7B4C E Global\MSI0000
        2⤵
        • Drops file in Windows directory
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:5064
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:4224
    • C:\Program Files (x86)\ScreenConnect Client (66e957d7072056a3)\ScreenConnect.ClientService.exe
      "C:\Program Files (x86)\ScreenConnect Client (66e957d7072056a3)\ScreenConnect.ClientService.exe" "?e=Access&y=Guest&h=instance-eola3c-relay.screenconnect.com&p=443&s=3389e5f0-8c9c-4e2c-9e80-750dcbc63770&k=BgIAAACkAABSU0ExAAgAAAEAAQAhySQDq0df6rBSCYIZ9SIHNC82VOXwu0N8cJBigr32mvP7GPd9NUyddqIo5PKfEy4VgnXM3m2O3sNyTGVoDtee3BrrB6nfV8fUt7dqUrLcIYIY8Ij0LrTtyeMptTQfILNIsVAn0K4xzHeg2solZD26fF89FSrmbhHM8GDrkTCFwq2zYpyAs6obB2nptDmCCi277TCYhkOsHNouQU4ObDEWFkxksQjbrxKTZnvVQQctOrVu5sb5R3vcGxWotBxWX1ITPu3tSA9Hmw7eNKKC94AvqmBcVZwfwSzpTSY1TgOeFrzmfmXvfZNzrpUJvJNWKSuyb9n8929530a0bfhKAzOu&c=PaaNW&c=&c=&c=&c=&c=&c=&c="
      1⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      PID:3592
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 3592 -s 1340
        2⤵
        • Program crash
        PID:4564
    • C:\Program Files (x86)\ScreenConnect Client (66e957d7072056a3)\ScreenConnect.ClientService.exe
      "C:\Program Files (x86)\ScreenConnect Client (66e957d7072056a3)\ScreenConnect.ClientService.exe" "?e=Access&y=Guest&h=instance-eola3c-relay.screenconnect.com&p=443&s=3389e5f0-8c9c-4e2c-9e80-750dcbc63770&k=BgIAAACkAABSU0ExAAgAAAEAAQAhySQDq0df6rBSCYIZ9SIHNC82VOXwu0N8cJBigr32mvP7GPd9NUyddqIo5PKfEy4VgnXM3m2O3sNyTGVoDtee3BrrB6n%2fV8fUt7dqUrLcIYIY8Ij0LrTtyeMptTQ%2fILNIsVAn0K4xzHeg2solZD26fF89FSrmbhHM8GDrkTCFwq2zYpyAs6o%2bB2nptDmCCi277TCYhkOsHNouQU4O%2bDEWFkxksQjbrxKTZnvVQQctOrVu5s%2b5R3vcGxWotBxWX1ITPu3tSA9Hmw7eNKKC94AvqmBcVZwfwSzpTSY1TgOeFrzm%2fmXv%2fZNzrpUJvJNWKSuyb9n8929530a0%2b%2fhKAzOu&c=PaaNW&c=&c=&c=&c=&c=&c=&c="
      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:3096
      • C:\Program Files (x86)\ScreenConnect Client (66e957d7072056a3)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (66e957d7072056a3)\ScreenConnect.WindowsClient.exe" "RunRole" "6639618f-c121-44fb-919b-59547bfcad48" "User"
        2⤵
        • Executes dropped EXE
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        PID:236
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 3592 -ip 3592
      1⤵
        PID:1596

      Network

            MITRE ATT&CK Enterprise v16

            Replay Monitor

            Loading Replay Monitor...

            Downloads

            e5ab691.rbs

            • Path C:\Config.Msi\e5ab691.rbs
            • Size 214KB
            • SHA256 13b92f4fbcefd55b71ad73ce1cdd4a79c71ebfba42dad0c43892ef7aa6c10087
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.Client.dll

            • Path C:\Program Files (x86)\ScreenConnect Client (66e957d7072056a3)\ScreenConnect.Client.dll
            • Size 412KB
            • SHA256 4010ea184982e71ad71e76b43266488c954f665324b89ef042cea9e463a60c9d
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.ClientService.dll

            • Path C:\Program Files (x86)\ScreenConnect Client (66e957d7072056a3)\ScreenConnect.ClientService.dll
            • Size 91KB
            • SHA256 6e6aa42b107d3e82b7b7dc18a75eee3f09e9f268788c0a7edbbc617152adf178
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.ClientService.exe

            • Path C:\Program Files (x86)\ScreenConnect Client (66e957d7072056a3)\ScreenConnect.ClientService.exe
            • Size 93KB
            • SHA256 a94ecccb5b88e3860d619fbb3b87ff4af6448240ab65b89d610f348d75e793f2
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.Core.dll

            • Path C:\Program Files (x86)\ScreenConnect Client (66e957d7072056a3)\ScreenConnect.Core.dll
            • Size 577KB
            • SHA256 eedbd9ba4755f238af397c71b575082e18a31eabacc22abb4949f92fe991e169
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.Windows.dll

            • Path C:\Program Files (x86)\ScreenConnect Client (66e957d7072056a3)\ScreenConnect.Windows.dll
            • Size 1.7MB
            • SHA256 305663a05c77c8058569a976db740aa2f20b66583f0381059633b628376570fc
            • MD5 SHA1 SHA512 SSDEEP TLSH

            system.config

            • Path C:\Program Files (x86)\ScreenConnect Client (66e957d7072056a3)\system.config
            • Size 962B
            • SHA256 72f89c70f3a6758e0d4ea7ba57e081b47398019830e53bf0dd17b9ff618f3523
            • MD5 SHA1 SHA512 TLSH

            MSI6C1E.tmp

            • Path C:\Users\Admin\AppData\Local\Temp\MSI6C1E.tmp
            • Size 1.1MB
            • SHA256 18bacfd2a7c95800b6279cb8731bf03c8bbb526f5bc3790254a8e06d7ceee8ad
            • MD5 SHA1 SHA512 SSDEEP TLSH

            Microsoft.Deployment.WindowsInstaller.dll

            • Path C:\Users\Admin\AppData\Local\Temp\MSI6C1E.tmp-\Microsoft.Deployment.WindowsInstaller.dll
            • Size 172KB
            • SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.Core.dll

            • Path C:\Users\Admin\AppData\Local\Temp\MSI6C1E.tmp-\ScreenConnect.Core.dll
            • Size 567KB
            • SHA256 15fec18d3a8990cdb540897ede61227353165668048c001164fcd22233cc8390
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.InstallerActions.dll

            • Path C:\Users\Admin\AppData\Local\Temp\MSI6C1E.tmp-\ScreenConnect.InstallerActions.dll
            • Size 24KB
            • SHA256 c1142cc3ae09a7d3b5392539c29cbeb585543a38c93e37e55d82cbe0bb56d588
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.Windows.dll

            • Path C:\Users\Admin\AppData\Local\Temp\MSI6C1E.tmp-\ScreenConnect.Windows.dll
            • Size 1.7MB
            • SHA256 ae3005e1ca932eccde09c479fde2ecf8ea2feeb908dec4f0c830eab671276454
            • MD5 SHA1 SHA512 SSDEEP TLSH

            CustomAction.config

            • Path C:\Users\Admin\AppData\Local\Temp\MSI6F8A.tmp-\CustomAction.config
            • Size 234B
            • SHA256 7027b69ab6ebc9f3f7d2f6c800793fde2a057b76010d8cfd831cf440371b2b23
            • MD5 SHA1 SHA512 TLSH

            ScreenConnect.WindowsInstaller.dll

            • Path C:\Users\Admin\AppData\Local\Temp\MSI6F8A.tmp-\ScreenConnect.WindowsInstaller.dll
            • Size 137KB
            • SHA256 7c27380976a5befc5a947e129eb464123f46d06cf0eb7f984ced921f36e1d0e7
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.ClientSetup.msi

            • Path C:\Users\Admin\AppData\Local\Temp\ScreenConnect\26.4.3.9662\66e957d7072056a3\ScreenConnect.ClientSetup.msi
            • Size 9.8MB
            • SHA256 87584fb4a7bb471d1428e102739fa8f661647478f5230d464bce534bc42c11cf
            • MD5 SHA1 SHA512 SSDEEP TLSH

            MSIBBFF.tmp

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

            3kuf5r2i.newcfg

            • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (66e957d7072056a3)\3kuf5r2i.newcfg
            • Size 884B
            • SHA256 fa5425af214f19c7f98f073d892bffddb46b765ea53e0925f1fff58df24e5a33
            • MD5 SHA1 SHA512 TLSH

            cmj1jowp.newcfg

            • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (66e957d7072056a3)\cmj1jowp.newcfg
            • Size 683B
            • SHA256 4e6c3b04e90525d8b787c5a7f0bc227e63e1f4eb0da0daf2a19af36d7aae9a3e
            • MD5 SHA1 SHA512 TLSH

            hh52cz0q.newcfg

            • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (66e957d7072056a3)\hh52cz0q.newcfg
            • Size 884B
            • SHA256 b5ebf2de7fbf720cbb2f4dfa233f778938115aef83b069d83bad4f54b51c5f10
            • MD5 SHA1 SHA512 TLSH

            lktnktuc.newcfg

            • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (66e957d7072056a3)\lktnktuc.newcfg
            • Size 884B
            • SHA256 838c26fac4613cf15b87806771810f52e11e4b89d5830f2da201b7e0f9e7bd2b
            • MD5 SHA1 SHA512 TLSH

            pduqtyg0.newcfg

            • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (66e957d7072056a3)\pduqtyg0.newcfg
            • Size 884B
            • SHA256 91c49000af6df65863e91715b68300f6c4900838a4e8b3b6fea61ff5c90e67f9
            • MD5 SHA1 SHA512 TLSH

            user.config

            • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (66e957d7072056a3)\user.config
            • Size 520B
            • SHA256 8daa103fa9cb289c0b1c9b4bb0b1eb219548e8c9673f2c994421d03ee07c3b20
            • MD5 SHA1 SHA512 TLSH

            memory/236-227-0x000000001BAB0000-0x000000001BC38000-memory.dmp

            memory/236-226-0x00000000026B0000-0x00000000026CA000-memory.dmp

            memory/236-224-0x000000001B770000-0x000000001B920000-memory.dmp

            memory/236-222-0x000000001B520000-0x000000001B5B4000-memory.dmp

            memory/236-221-0x0000000002740000-0x00000000027AC000-memory.dmp

            memory/236-220-0x00000000004D0000-0x000000000057E000-memory.dmp

            memory/2704-6-0x0000000006330000-0x00000000064E0000-memory.dmp

            memory/2704-10-0x0000000074A00000-0x00000000751BC000-memory.dmp

            memory/2704-3-0x00000000062A0000-0x0000000006334000-memory.dmp

            memory/2704-12-0x0000000074A00000-0x00000000751BC000-memory.dmp

            memory/2704-9-0x0000000074A00000-0x00000000751BC000-memory.dmp

            memory/2704-2-0x0000000002470000-0x000000000247C000-memory.dmp

            memory/2704-0-0x0000000074A12000-0x0000000074A13000-memory.dmp

            memory/2704-4-0x0000000006230000-0x0000000006258000-memory.dmp

            memory/2704-1-0x0000000002450000-0x0000000002458000-memory.dmp

            memory/2704-7-0x0000000006AA0000-0x000000000705A000-memory.dmp

            memory/2704-5-0x0000000074A00000-0x00000000751BC000-memory.dmp

            memory/2808-225-0x000001CFE9BB0000-0x000001CFEA554000-memory.dmp

            memory/3096-206-0x0000000003B60000-0x0000000003BA1000-memory.dmp

            memory/3096-207-0x0000000004130000-0x0000000004206000-memory.dmp

            memory/3096-205-0x0000000003F40000-0x0000000003FD2000-memory.dmp

            memory/3096-204-0x0000000003E30000-0x0000000003E9C000-memory.dmp

            memory/3096-186-0x0000000003BB0000-0x0000000003C00000-memory.dmp

            memory/3272-76-0x0000000003BB0000-0x0000000003BD8000-memory.dmp

            memory/3592-154-0x0000000000B10000-0x0000000000B2A000-memory.dmp

            memory/3592-161-0x0000000004A10000-0x0000000004AA4000-memory.dmp

            memory/3592-172-0x0000000004C60000-0x0000000004E10000-memory.dmp

            memory/4920-46-0x00000000057B0000-0x0000000005960000-memory.dmp

            memory/4920-38-0x0000000003410000-0x000000000341C000-memory.dmp

            memory/4920-34-0x0000000003420000-0x000000000344E000-memory.dmp

            memory/4920-42-0x0000000005560000-0x00000000055F4000-memory.dmp