Analysis

  • max time kernel
    149s
  • max time network
    154s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    20/08/2026, 16:17

General

  • Target
    ScreenConnect.ClientSetup.exe
  • Size 12.2MB
  • Sample260820-trbn8aed85
  • SHA256 e4db566aed20b18a3aff393b6708a59bbfba5f02e173ff94a6d660ad320043db
  • 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
  • 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:1860
    • C:\Windows\SysWOW64\msiexec.exe
      "C:\Windows\System32\msiexec.exe" /i "C:\Users\Admin\AppData\Local\Temp\ScreenConnect\26.5.3.9691\0bca46083bea0ab9\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:6140
  • 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:1812
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding BFB39CA20E5C99BFB788347C14A51040 C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:3452
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI2DAD.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240725671 1 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:2940
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI30CB.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240726234 11 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.CheckMsiMotw
        3⤵
        • Badlisted process makes network request
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:4172
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI388D.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240728359 18 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.CheckMsiFileName
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:1104
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:5092
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding D57A083B3E4E4F8AB3E3B2B4D7BD3551
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:4664
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 1CF722241E359CE12AF2822B980E62BB E Global\MSI0000
        2⤵
        • Drops file in Windows directory
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:1700
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:5940
    • C:\Program Files (x86)\ScreenConnect Client (0bca46083bea0ab9)\ScreenConnect.ClientService.exe
      "C:\Program Files (x86)\ScreenConnect Client (0bca46083bea0ab9)\ScreenConnect.ClientService.exe" "?e=Access&y=Guest&h=instance-ig40vn-relay.screenconnect.com&p=443&s=48924d3c-f39a-4f77-a5b2-c4d3d897a464&k=BgIAAACkAABSU0ExAAgAAAEAAQCpYY%2b%2fkL%2fMi08mRf4V3VvB%2fYpkpY%2f7clZ4iyuE1fFEq7Xbi0p2P2fMzCY6GxYpNEMmpSZXey3sTAOwKvwFRwhCUtxGdWirPt3oUpRIGjZq617oaL7mvW1BBz6sHt5FwzNRk4VZGbt72HClYGltSl2n0o1vKwqXBVc%2fOnabQ9pLuHaeN%2f%2fYVg38APBbgzkj2Ii3oxqpWOxIV3gWRo4l0vQrqfslDizNhMjDXIoM6d9iEBTFTN1G7Dv%2finRhbb3EY%2fgAC%2f%2bvPQfBpBaFKcLGqXnlh0Y%2f%2fp1mF0SzWg9iYA%2fAkZ6kWgymgOQ10uY3jHi3z7QljHOggBi8JAZbvDa56ni5&c=609&c=mega&c=02&c=02&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:4512
      • C:\Program Files (x86)\ScreenConnect Client (0bca46083bea0ab9)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (0bca46083bea0ab9)\ScreenConnect.WindowsClient.exe" "RunRole" "328145a4-fad6-47a0-87f4-f2ee6a053138" "User"
        2⤵
        • Executes dropped EXE
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        PID:2472
      • C:\Program Files (x86)\ScreenConnect Client (0bca46083bea0ab9)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (0bca46083bea0ab9)\ScreenConnect.WindowsClient.exe" "RunRole" "c9b3d544-11b7-4836-bec0-7f7d969b16fa" "System"
        2⤵
        • Executes dropped EXE
        • Checks processor information in registry
        • Modifies data under HKEY_USERS
        PID:4656
    • C:\Program Files (x86)\ScreenConnect Client (0bca46083bea0ab9)\ScreenConnect.ClientService.exe
      "C:\Program Files (x86)\ScreenConnect Client (0bca46083bea0ab9)\ScreenConnect.ClientService.exe" "?e=Access&y=Guest&h=instance-ig40vn-relay.screenconnect.com&p=443&s=48924d3c-f39a-4f77-a5b2-c4d3d897a464&k=BgIAAACkAABSU0ExAAgAAAEAAQCpYYbfkLfMi08mRf4V3VvBfYpkpYf7clZ4iyuE1fFEq7Xbi0p2P2fMzCY6GxYpNEMmpSZXey3sTAOwKvwFRwhCUtxGdWirPt3oUpRIGjZq617oaL7mvW1BBz6sHt5FwzNRk4VZGbt72HClYGltSl2n0o1vKwqXBVcfOnabQ9pLuHaeNffYVg38APBbgzkj2Ii3oxqpWOxIV3gWRo4l0vQrqfslDizNhMjDXIoM6d9iEBTFTN1G7DvfinRhbb3EYfgACfbvPQfBpBaFKcLGqXnlh0Yffp1mF0SzWg9iYAfAkZ6kWgymgOQ10uY3jHi3z7QljHOggBi8JAZbvDa56ni5&c=609&c=mega&c=02&c=02&c=&c=&c=&c="
      1⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      PID:2612
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 2612 -s 1308
        2⤵
        • Program crash
        PID:2296
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 2612 -ip 2612
      1⤵
        PID:4360

      Network

            MITRE ATT&CK Enterprise v16

            Replay Monitor

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            Downloads

            e598515.rbs

            • Path C:\Config.Msi\e598515.rbs
            • Size 214KB
            • SHA256 d3d9b3146c971c0612356a4efe8e599884e709124020246872f6aa23822079d9
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.Client.dll

            • Path C:\Program Files (x86)\ScreenConnect Client (0bca46083bea0ab9)\ScreenConnect.Client.dll
            • Size 412KB
            • SHA256 8e5531c2b302f9c95ed32ac7481d3535b6d51147257d317686c07ea1a9cb8362
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.ClientService.dll

            • Path C:\Program Files (x86)\ScreenConnect Client (0bca46083bea0ab9)\ScreenConnect.ClientService.dll
            • Size 92KB
            • SHA256 ed32fe0d924959020cbef0534a7ba612e94263ccc74837475f3b5a6a726acad0
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.ClientService.exe

            • Path C:\Program Files (x86)\ScreenConnect Client (0bca46083bea0ab9)\ScreenConnect.ClientService.exe
            • Size 93KB
            • SHA256 16b4c273a25526e7262716ebe9d46480962347191a034595f18be740d9ce1e17
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.Core.dll

            • Path C:\Program Files (x86)\ScreenConnect Client (0bca46083bea0ab9)\ScreenConnect.Core.dll
            • Size 579KB
            • SHA256 f64cb7ab5f105c22348a22e02dd506ff45456884639fee0f322862112860af24
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.Windows.dll

            • Path C:\Program Files (x86)\ScreenConnect Client (0bca46083bea0ab9)\ScreenConnect.Windows.dll
            • Size 1.7MB
            • SHA256 c50d6e8d93ed197dd0cfb647743b42a2a6a9289f6db04092f56cefd6d569663e
            • MD5 SHA1 SHA512 SSDEEP TLSH

            system.config

            • Path C:\Program Files (x86)\ScreenConnect Client (0bca46083bea0ab9)\system.config
            • Size 974B
            • SHA256 e663132030d5b00e8cbe6fde4d6a012fb7f26910069432e6d4da237d3473b4b3
            • MD5 SHA1 SHA512 TLSH

            MSI2DAD.tmp

            • Path C:\Users\Admin\AppData\Local\Temp\MSI2DAD.tmp
            • Size 1.1MB
            • SHA256 de867af8055f81b7691f12175deb4c4e7f3bf97130e51761ed02182b0496e16f
            • MD5 SHA1 SHA512 SSDEEP TLSH

            Microsoft.Deployment.WindowsInstaller.dll

            • Path C:\Users\Admin\AppData\Local\Temp\MSI2DAD.tmp-\Microsoft.Deployment.WindowsInstaller.dll
            • Size 172KB
            • SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.Core.dll

            • Path C:\Users\Admin\AppData\Local\Temp\MSI2DAD.tmp-\ScreenConnect.Core.dll
            • Size 569KB
            • SHA256 e92d94613443befebb55b08f80d10a2fdbfc58233e8dc95cfb4466fde12964f7
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.InstallerActions.dll

            • Path C:\Users\Admin\AppData\Local\Temp\MSI2DAD.tmp-\ScreenConnect.InstallerActions.dll
            • Size 24KB
            • SHA256 d827d3575ca29f8a40ea5379c7df2b315fc72cbd93451de94e199740594b51bb
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.Windows.dll

            • Path C:\Users\Admin\AppData\Local\Temp\MSI2DAD.tmp-\ScreenConnect.Windows.dll
            • Size 1.7MB
            • SHA256 320b89343e896a8d2ebf537861d800a9aca88245cc3b5616bb5bea5cc6797fbb
            • MD5 SHA1 SHA512 SSDEEP TLSH

            CustomAction.config

            • Path C:\Users\Admin\AppData\Local\Temp\MSI30CB.tmp-\CustomAction.config
            • Size 234B
            • SHA256 7027b69ab6ebc9f3f7d2f6c800793fde2a057b76010d8cfd831cf440371b2b23
            • MD5 SHA1 SHA512 TLSH

            ScreenConnect.WindowsInstaller.dll

            • Path C:\Users\Admin\AppData\Local\Temp\MSI30CB.tmp-\ScreenConnect.WindowsInstaller.dll
            • Size 137KB
            • SHA256 dbf379b93127345a83282380aee634d0b70ec731acfeea76617c76e76fdc764f
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.ClientSetup.msi

            • Path C:\Users\Admin\AppData\Local\Temp\ScreenConnect\26.5.3.9691\0bca46083bea0ab9\ScreenConnect.ClientSetup.msi
            • Size 9.8MB
            • SHA256 d69bd944cc61bd30782c71476bdebdd5d0485cadd30c6ae999881e15ced99138
            • MD5 SHA1 SHA512 SSDEEP TLSH

            MSI8AE2.tmp

            • Path C:\Windows\Installer\MSI8AE2.tmp
            • Size 202KB
            • SHA256 3cff4ac91288a0ff0c13278e73b282a64e83d089c5a61a45d483194ab336b852
            • MD5 SHA1 SHA512 SSDEEP TLSH

            d5kqxskj.newcfg

            • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (0bca46083bea0ab9)\d5kqxskj.newcfg
            • Size 882B
            • SHA256 9f57deaf105dfb3288a554f0dd75b5982f38a8b368da0ac3cafce17e58bc52ae
            • MD5 SHA1 SHA512 TLSH

            udgygiax.newcfg

            • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (0bca46083bea0ab9)\udgygiax.newcfg
            • Size 683B
            • SHA256 76d3d856b53a465f35d17e0090007bfd15a11641e076a2fc2d95497b40f129b2
            • MD5 SHA1 SHA512 TLSH

            user.config

            • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (0bca46083bea0ab9)\user.config
            • Size 520B
            • SHA256 6533c02a3875d2e82a5fad72e521c7376a47e259c0f48643fb5e0431863c4a33
            • MD5 SHA1 SHA512 TLSH

            metadata-2

            • Path \??\GLOBALROOT\Device\HarddiskVolumeShadowCopy2\System Volume Information\SPP\metadata-2
            • Size 26.1MB
            • SHA256 4b3ee530444000074fc51c94d4522c28dd06ab88fcab43d4e1b3773920e6795e
            • MD5 SHA1 SHA512 SSDEEP TLSH

            {f93519c9-c93e-420d-9111-63696d555cc8}_OnDiskSnapshotProp

            • Path \??\Volume{cb1876cb-0000-0000-0000-d08302000000}\System Volume Information\SPP\OnlineMetadataCache\{f93519c9-c93e-420d-9111-63696d555cc8}_OnDiskSnapshotProp
            • Size 6KB
            • SHA256 2f27c3e5a2677526399a08b14b8be3a0a46191f75581fd6f2082b74f93c9b5af
            • MD5 SHA1 SHA512 SSDEEP TLSH

            memory/1812-227-0x000001F0DF580000-0x000001F0DFF24000-memory.dmp

            memory/1860-7-0x00000000064D0000-0x0000000006A8A000-memory.dmp

            memory/1860-0-0x00000000750C2000-0x00000000750C3000-memory.dmp

            memory/1860-13-0x00000000750B0000-0x000000007586C000-memory.dmp

            memory/1860-11-0x00000000750B0000-0x000000007586C000-memory.dmp

            memory/1860-1-0x0000000003510000-0x0000000003518000-memory.dmp

            memory/1860-2-0x0000000003640000-0x000000000364C000-memory.dmp

            memory/1860-10-0x00000000750B0000-0x000000007586C000-memory.dmp

            memory/1860-8-0x00000000750B0000-0x000000007586C000-memory.dmp

            memory/1860-3-0x0000000005BC0000-0x0000000005C54000-memory.dmp

            memory/1860-4-0x00000000750B0000-0x000000007586C000-memory.dmp

            memory/1860-6-0x0000000005D60000-0x0000000005F10000-memory.dmp

            memory/1860-5-0x0000000005C50000-0x0000000005C78000-memory.dmp

            memory/2472-226-0x0000000002AC0000-0x0000000002B01000-memory.dmp

            memory/2472-221-0x0000000002B10000-0x0000000002B7C000-memory.dmp

            memory/2472-225-0x000000001C040000-0x000000001C1C8000-memory.dmp

            memory/2472-224-0x0000000002AA0000-0x0000000002ABA000-memory.dmp

            memory/2472-223-0x000000001BD00000-0x000000001BEB0000-memory.dmp

            memory/2472-222-0x000000001BAB0000-0x000000001BB44000-memory.dmp

            memory/2472-220-0x00000000009C0000-0x0000000000A6E000-memory.dmp

            memory/2940-41-0x0000000006090000-0x0000000006124000-memory.dmp

            memory/2940-45-0x00000000062E0000-0x0000000006490000-memory.dmp

            memory/2940-37-0x0000000003EB0000-0x0000000003EBC000-memory.dmp

            memory/2940-33-0x0000000003E70000-0x0000000003E9E000-memory.dmp

            memory/4172-75-0x00000000052A0000-0x00000000052C8000-memory.dmp

            memory/4512-172-0x00000000046A0000-0x0000000004850000-memory.dmp

            memory/4512-204-0x00000000049D0000-0x0000000004A62000-memory.dmp

            memory/4512-206-0x0000000004BC0000-0x0000000004C96000-memory.dmp

            memory/4512-205-0x0000000004850000-0x0000000004891000-memory.dmp

            memory/4512-203-0x00000000048C0000-0x000000000492C000-memory.dmp

            memory/4512-186-0x0000000004640000-0x0000000004690000-memory.dmp

            memory/4512-165-0x0000000004450000-0x00000000044E4000-memory.dmp

            memory/4512-157-0x00000000042F0000-0x000000000430A000-memory.dmp