Analysis

  • max time kernel
    150s
  • max time network
    147s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260911-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    22/09/2026, 18:11

General

  • Target
    ScreenConnect.ClientSetup.exe
  • Size 19.8MB
  • Sample260922-wstbrscc76
  • SHA256 b2fbc3aef0cd70fd1d60af6e1c1664f1233f39211d34aead124f511f8ea7dec0
  • 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:2908
    • C:\Windows\SysWOW64\msiexec.exe
      "C:\Windows\System32\msiexec.exe" /i "C:\Users\Admin\AppData\Local\Temp\ScreenConnect\26.6.6.9747\aa608af85502e1be\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:3324
  • 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:2832
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding 9828FE037A715D45A1752156A709AE42 C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:5068
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI9C56.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240753890 1 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:4852
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI9F16.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240754484 10 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.CheckMsiMotw
        3⤵
        • Badlisted process makes network request
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:1600
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSIA512.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240756015 17 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.CheckMsiFileName
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:5960
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:5476
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 4CD5232477BD187B43847548EC5C44B4
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:2304
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 2FF22AF86A9844E505E826F719210C25 E Global\MSI0000
        2⤵
        • Drops file in Windows directory
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:1692
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:3772
    • C:\Windows\system32\svchost.exe
      C:\Windows\system32\svchost.exe -k GPSvcGroup
      1⤵
        PID:3952
      • C:\Program Files (x86)\ScreenConnect Client (aa608af85502e1be)\ScreenConnect.ClientService.exe
        "C:\Program Files (x86)\ScreenConnect Client (aa608af85502e1be)\ScreenConnect.ClientService.exe" "?e=Access&y=Guest&h=instance-hq7plo-relay.screenconnect.com&p=443&s=d3e9abd5-0e46-46a2-ae8a-0edd37a96411&k=BgIAAACkAABSU0ExAAgAAAEAAQBJKFf3uqMKmPhCwnHPjx%2baRASaxMLIbYodYjNQKzJp4KAmMD%2f7PSf6Zx%2bsu7myNO7OUATDiNQTFYozUx%2bqJCMSAOpDj44b%2fZ3oWDNIMhfzPv%2fsuvSuBGU4sMJc3gShyWMLa8n%2bck4adqKpMS2VjJnauCdAytozN%2fZKbYhppyq8NCQ9bn11WNXIsFo4eMfjozdx2gmV1%2bzO2ksq8rJffyjwOuEekXUuGjzVBm3TWLTRiHajyw2ojhAiN%2fh8KdWJKk%2fYxJGUH1Yoh7Jmq2tj%2fL2I6Q59tYHMcLX%2f%2bhvoTXwYioyor%2fKQYbuEGDikDlkB3yjbFotEVRb9%2fqGkUfMKUvzk"
        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:6128
        • C:\Program Files (x86)\ScreenConnect Client (aa608af85502e1be)\ScreenConnect.WindowsClient.exe
          "C:\Program Files (x86)\ScreenConnect Client (aa608af85502e1be)\ScreenConnect.WindowsClient.exe" "RunRole" "1c04cc32-23da-4b96-9857-dba6c4acec7f" "User"
          2⤵
          • Executes dropped EXE
          • Suspicious use of FindShellTrayWindow
          • Suspicious use of SendNotifyMessage
          PID:2380
        • C:\Program Files (x86)\ScreenConnect Client (aa608af85502e1be)\ScreenConnect.WindowsClient.exe
          "C:\Program Files (x86)\ScreenConnect Client (aa608af85502e1be)\ScreenConnect.WindowsClient.exe" "RunRole" "2bd4aa42-eccc-4d12-aea4-0af894c0c928" "System"
          2⤵
          • Executes dropped EXE
          • Checks processor information in registry
          • Modifies data under HKEY_USERS
          PID:1560

      Network

            MITRE ATT&CK Enterprise v16

            Replay Monitor

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            Downloads

            e59ed55.rbs

            • Path C:\Config.Msi\e59ed55.rbs
            • Size 214KB
            • SHA256 406e1976144e4acdb08d85bddf5b1f70b7f4f1422332e191022afe4e983c5266
            • MD5 SHA1 SHA512 SSDEEP TLSH

            Client.en-US.resources

            • Path C:\Program Files (x86)\ScreenConnect Client (aa608af85502e1be)\Client.en-US.resources
            • Size 64KB
            • SHA256 a90983b3d26f9e6bb472663b84d13254349f62b0ad4c667fd76b3edd270240b2
            • MD5 SHA1 SHA512 SSDEEP TLSH

            Client.resources

            • Path C:\Program Files (x86)\ScreenConnect Client (aa608af85502e1be)\Client.resources
            • Size 6KB
            • SHA256 bd34378ad99f7609fa0c7c8edde6337c738a61d288863015629329806a1cc728
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.Client.dll

            • Path C:\Program Files (x86)\ScreenConnect Client (aa608af85502e1be)\ScreenConnect.Client.dll
            • Size 615KB
            • SHA256 787a02b1938e8c1ce52448b8779d2c9c47029664f97185177c2584e8f980abc4
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.ClientService.dll

            • Path C:\Program Files (x86)\ScreenConnect Client (aa608af85502e1be)\ScreenConnect.ClientService.dll
            • Size 176KB
            • SHA256 579fa008b8c96612163fd8a89a978140a652b3739867772df0711fca148705aa
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.ClientService.exe

            • Path C:\Program Files (x86)\ScreenConnect Client (aa608af85502e1be)\ScreenConnect.ClientService.exe
            • Size 93KB
            • SHA256 d887f20ec383d7ce3a5727856bf7fa68ceb972108b6d0a5dd9924707e820dc24
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.Core.dll

            • Path C:\Program Files (x86)\ScreenConnect Client (aa608af85502e1be)\ScreenConnect.Core.dll
            • Size 1.3MB
            • SHA256 5b2d14e237485c0164d865d8a94f8a8bed28ab0db52c6a7ef99f7ebb9648d324
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.Windows.dll

            • Path C:\Program Files (x86)\ScreenConnect Client (aa608af85502e1be)\ScreenConnect.Windows.dll
            • Size 1.9MB
            • SHA256 88dd22f6f0ca70d10c64ca919b0d8b6d73e84c1d567d4b8d15b6e9a9b60d6d8f
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.WindowsAuthenticationPackage.dll

            • Path C:\Program Files (x86)\ScreenConnect Client (aa608af85502e1be)\ScreenConnect.WindowsAuthenticationPackage.dll
            • Size 254KB
            • SHA256 a5b8f0070201e4f26260af6a25941ea38bd7042aefd48cd68b9acf951fa99ee5
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.WindowsClient.exe

            • Path C:\Program Files (x86)\ScreenConnect Client (aa608af85502e1be)\ScreenConnect.WindowsClient.exe
            • Size 1.6MB
            • SHA256 b7a495f517b9bf23f529552b145121f922ab4915e24b663ae68b3007daea3804
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.WindowsClient.exe.config

            • Path C:\Program Files (x86)\ScreenConnect Client (aa608af85502e1be)\ScreenConnect.WindowsClient.exe.config
            • Size 266B
            • SHA256 87c640d3184c17d3b446a72d5f13d643a774b4ecc7afbedfd4e8da7795ea8077
            • MD5 SHA1 SHA512 TLSH

            ScreenConnect.WindowsCredentialProvider.dll

            • Path C:\Program Files (x86)\ScreenConnect Client (aa608af85502e1be)\ScreenConnect.WindowsCredentialProvider.dll
            • Size 837KB
            • SHA256 239377f4d2345d2a4ff6e3cbebd83c6edb06db4daea389159d19770a2dfcb80c
            • MD5 SHA1 SHA512 SSDEEP TLSH

            system.config

            • Path C:\Program Files (x86)\ScreenConnect Client (aa608af85502e1be)\system.config
            • Size 976B
            • SHA256 b59df65c735aa1f9257d0ec5f159511681708af9bc5864ab0f19f2dbe2b44d44
            • MD5 SHA1 SHA512 TLSH

            MSI9C56.tmp

            • Path C:\Users\Admin\AppData\Local\Temp\MSI9C56.tmp
            • Size 1.9MB
            • SHA256 1dabfa60015c186a4315f16d46d9e53435dc259c52843e73dac0d04be92f9a84
            • MD5 SHA1 SHA512 SSDEEP TLSH

            Microsoft.Deployment.WindowsInstaller.dll

            • Path C:\Users\Admin\AppData\Local\Temp\MSI9C56.tmp-\Microsoft.Deployment.WindowsInstaller.dll
            • Size 172KB
            • SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.Core.dll

            • Path C:\Users\Admin\AppData\Local\Temp\MSI9C56.tmp-\ScreenConnect.Core.dll
            • Size 1.3MB
            • SHA256 e5fd82d18c2dcaadbfc4b72b56573e819cc3e8ee6406f2edb982cc073dc607bb
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.InstallerActions.dll

            • Path C:\Users\Admin\AppData\Local\Temp\MSI9C56.tmp-\ScreenConnect.InstallerActions.dll
            • Size 24KB
            • SHA256 cf8505204b1458dac9cb3002fd5bbd5fac43c5b4702aa0153fb4b9a2cfcf954a
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.Windows.dll

            • Path C:\Users\Admin\AppData\Local\Temp\MSI9C56.tmp-\ScreenConnect.Windows.dll
            • Size 1.8MB
            • SHA256 ed1b4eb6c24c85392f692bf5863d9ccb76575051bb605360961b9d7624a371c6
            • MD5 SHA1 SHA512 SSDEEP TLSH

            CustomAction.config

            • Path C:\Users\Admin\AppData\Local\Temp\MSI9F16.tmp-\CustomAction.config
            • Size 234B
            • SHA256 7027b69ab6ebc9f3f7d2f6c800793fde2a057b76010d8cfd831cf440371b2b23
            • MD5 SHA1 SHA512 TLSH

            ScreenConnect.WindowsInstaller.dll

            • Path C:\Users\Admin\AppData\Local\Temp\MSI9F16.tmp-\ScreenConnect.WindowsInstaller.dll
            • Size 390KB
            • SHA256 c469358d585fa9f1637a02d194e162e454d90b8dc7e4939f88b36e09b04a7a96
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.ClientSetup.msi

            • Path C:\Users\Admin\AppData\Local\Temp\ScreenConnect\26.6.6.9747\aa608af85502e1be\ScreenConnect.ClientSetup.msi
            • Size 16.2MB
            • SHA256 90eae3df60ed0babd6228906f987aac0a8237b9c257b8ba57c440d4663c8d299
            • MD5 SHA1 SHA512 SSDEEP TLSH

            MSIF38F.tmp

            • Path C:\Windows\Installer\MSIF38F.tmp
            • Size 202KB
            • SHA256 3cff4ac91288a0ff0c13278e73b282a64e83d089c5a61a45d483194ab336b852
            • MD5 SHA1 SHA512 SSDEEP TLSH

            3b4oiw0t.newcfg

            • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (aa608af85502e1be)\3b4oiw0t.newcfg
            • Size 881B
            • SHA256 7b259d65e52d15982835bc5a19e38783d4ad0ec86dda51c816491eea6c3fb7e4
            • MD5 SHA1 SHA512 TLSH

            user.config

            • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (aa608af85502e1be)\user.config
            • Size 683B
            • SHA256 59b84c487c307dd1943bde9eb5967cff418631d35accdb4b57210580b2bbe931
            • MD5 SHA1 SHA512 TLSH

            user.config

            • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (aa608af85502e1be)\user.config
            • Size 520B
            • SHA256 7aa5dd2d23293e43b442d25c8876f494e566d137179824b8bb16b36d887fa9a7
            • MD5 SHA1 SHA512 TLSH

            memory/1600-77-0x0000000003C10000-0x0000000003C78000-memory.dmp

            memory/2380-224-0x0000000001810000-0x0000000001851000-memory.dmp

            memory/2380-219-0x000000001C020000-0x000000001C17A000-memory.dmp

            memory/2380-218-0x0000000003330000-0x00000000033CE000-memory.dmp

            memory/2380-217-0x0000000000CD0000-0x0000000000E66000-memory.dmp

            memory/2380-222-0x000000001C540000-0x000000001C6C8000-memory.dmp

            memory/2380-220-0x000000001C360000-0x000000001C540000-memory.dmp

            memory/2380-223-0x0000000001880000-0x00000000018B0000-memory.dmp

            memory/2908-7-0x0000000005FB0000-0x0000000006190000-memory.dmp

            memory/2908-0-0x0000000074DA2000-0x0000000074DA3000-memory.dmp

            memory/2908-1-0x00000000038B0000-0x00000000038B8000-memory.dmp

            memory/2908-8-0x0000000006760000-0x0000000006D1A000-memory.dmp

            memory/2908-5-0x0000000005F40000-0x0000000005FA8000-memory.dmp

            memory/2908-2-0x00000000038D0000-0x00000000038DC000-memory.dmp

            memory/2908-3-0x0000000074D90000-0x000000007554C000-memory.dmp

            memory/2908-4-0x0000000005DC0000-0x0000000005F1A000-memory.dmp

            memory/2908-6-0x0000000074D90000-0x000000007554C000-memory.dmp

            memory/2908-12-0x0000000074D90000-0x000000007554C000-memory.dmp

            memory/2908-10-0x0000000074D90000-0x000000007554C000-memory.dmp

            memory/2908-11-0x0000000074D90000-0x000000007554C000-memory.dmp

            memory/4852-47-0x0000000005DB0000-0x0000000005F90000-memory.dmp

            memory/4852-43-0x0000000005A70000-0x0000000005BCA000-memory.dmp

            memory/4852-39-0x00000000038F0000-0x00000000038FC000-memory.dmp

            memory/4852-35-0x00000000038B0000-0x00000000038DE000-memory.dmp

            memory/6128-194-0x0000000004750000-0x00000000047EE000-memory.dmp

            memory/6128-154-0x0000000003FF0000-0x0000000004020000-memory.dmp

            memory/6128-195-0x00000000047F0000-0x0000000004882000-memory.dmp

            memory/6128-199-0x00000000049E0000-0x0000000004AB6000-memory.dmp

            memory/6128-197-0x0000000004400000-0x0000000004441000-memory.dmp

            memory/6128-164-0x00000000044D0000-0x00000000046B0000-memory.dmp

            memory/6128-160-0x0000000004190000-0x00000000042EA000-memory.dmp

            memory/6128-177-0x0000000004440000-0x0000000004490000-memory.dmp