Analysis

  • max time kernel
    149s
  • 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
    13/08/2026, 18:19

General

  • Target
    ScreenConnect.ClientSetup.exe
  • Size 12.2MB
  • Sample260813-wyncpscg89
  • SHA256 42cbda6195b4f78887a4b54baf965db5b2fa2927a0bef5176855e91a490b8a34
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Badlisted process makes network request 5 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 12 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 14 IoCs
  • Modifies registry class 37 IoCs
  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 9 IoCs
  • Suspicious use of SendNotifyMessage 7 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:1716
    • C:\Windows\SysWOW64\msiexec.exe
      "C:\Windows\System32\msiexec.exe" /i "C:\Users\Admin\AppData\Local\Temp\ScreenConnect\26.5.3.9691\bf3bdabeba694d7c\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:4520
  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k GPSvcGroup
    1⤵
      PID:3304
    • 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:1728
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 18AB1264212A252CEC868E6B6EA872F4 C
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:1432
        • C:\Windows\SysWOW64\rundll32.exe
          rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSIDC3D.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240770343 1 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
          3⤵
          • Loads dropped DLL
          • System Location Discovery: System Language Discovery
          PID:2732
        • C:\Windows\SysWOW64\rundll32.exe
          rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSIE120.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240771390 10 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.CheckMsiMotw
          3⤵
          • Badlisted process makes network request
          • Loads dropped DLL
          • System Location Discovery: System Language Discovery
          PID:2652
        • C:\Windows\SysWOW64\rundll32.exe
          rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSIDAF2.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240835359 18 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.CheckMsiFileName
          3⤵
          • Loads dropped DLL
          • System Location Discovery: System Language Discovery
          PID:2588
      • C:\Windows\system32\srtasks.exe
        C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
        2⤵
          PID:2468
        • C:\Windows\syswow64\MsiExec.exe
          C:\Windows\syswow64\MsiExec.exe -Embedding 4D9F6050E3A588B04597C47333A02C2D
          2⤵
          • Loads dropped DLL
          • System Location Discovery: System Language Discovery
          • Suspicious use of SetWindowsHookEx
          PID:4772
        • C:\Windows\syswow64\MsiExec.exe
          C:\Windows\syswow64\MsiExec.exe -Embedding BDB531E2F79FB83203C0B019DD4E18B2 E Global\MSI0000
          2⤵
          • Drops file in Windows directory
          • Loads dropped DLL
          • System Location Discovery: System Language Discovery
          • Suspicious use of SetWindowsHookEx
          PID:2136
      • C:\Windows\system32\vssvc.exe
        C:\Windows\system32\vssvc.exe
        1⤵
        • Checks SCSI registry key(s)
        PID:1036
      • C:\Program Files (x86)\ScreenConnect Client (bf3bdabeba694d7c)\ScreenConnect.ClientService.exe
        "C:\Program Files (x86)\ScreenConnect Client (bf3bdabeba694d7c)\ScreenConnect.ClientService.exe" "?e=Access&y=Guest&h=instance-jlp4nw-relay.screenconnect.com&p=443&s=37740437-b057-4687-a76e-bd4fbf83218a&k=BgIAAACkAABSU0ExAAgAAAEAAQApM38JFetwSBcUAGpCSYYZDiDgIqmFtU41oFT3MvSeiRq9aR3ZyaQrWeFBmKgGi9425r4R2EXZ0GPNrjdnGG5eDE2qIL6%2bGNm4ajYgI4pRcR8MKDLnzkP%2f3PeDxdQk%2bAWTIcmyr6Tnmls6J5lRSJni5ghmQG7G1mQQlcx1GPg4%2fVYQCcMqn3V9OM6%2f%2fakqlYMJHMNWuAWpPk%2fBdlqT9yx%2f0HbaDpqSDTOpxvzawJ5Yio8oUv54l6i2UooX0GhOn%2btkG9dDARwQzFJvm4E5Evr%2fuSxRCapCR0e7Hh9grE2TlkazEitmNFHfBFnGVLe8JKnUtUiidbc1LuT8RoK3oaim"
        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:1960
        • C:\Program Files (x86)\ScreenConnect Client (bf3bdabeba694d7c)\ScreenConnect.WindowsClient.exe
          "C:\Program Files (x86)\ScreenConnect Client (bf3bdabeba694d7c)\ScreenConnect.WindowsClient.exe" "RunRole" "2e4f3f91-0f4c-4092-8a1e-5f6bdfebccbd" "User"
          2⤵
          • Executes dropped EXE
          • Suspicious use of FindShellTrayWindow
          • Suspicious use of SendNotifyMessage
          PID:2592
        • C:\Program Files (x86)\ScreenConnect Client (bf3bdabeba694d7c)\ScreenConnect.WindowsClient.exe
          "C:\Program Files (x86)\ScreenConnect Client (bf3bdabeba694d7c)\ScreenConnect.WindowsClient.exe" "RunRole" "e5a2066d-5218-489c-8f11-5734ec570da6" "System"
          2⤵
          • Executes dropped EXE
          • Checks processor information in registry
          • Modifies data under HKEY_USERS
          PID:5764

      Network

            MITRE ATT&CK Enterprise v16

            Replay Monitor

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            Downloads

            e5b26cf.rbs

            • Path C:\Config.Msi\e5b26cf.rbs
            • Size 214KB
            • SHA256 64f8b35f6087419699b8d9138a1ae71f5210fa0f99ff7661a1149c43df00d7f8
            • MD5 SHA1 SHA512 SSDEEP TLSH

            Client.en-US.resources

            • Path C:\Program Files (x86)\ScreenConnect Client (bf3bdabeba694d7c)\Client.en-US.resources
            • Size 64KB
            • SHA256 a90983b3d26f9e6bb472663b84d13254349f62b0ad4c667fd76b3edd270240b2
            • MD5 SHA1 SHA512 SSDEEP TLSH

            Client.resources

            • Path C:\Program Files (x86)\ScreenConnect Client (bf3bdabeba694d7c)\Client.resources
            • Size 6KB
            • SHA256 bd34378ad99f7609fa0c7c8edde6337c738a61d288863015629329806a1cc728
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.Client.dll

            • Path C:\Program Files (x86)\ScreenConnect Client (bf3bdabeba694d7c)\ScreenConnect.Client.dll
            • Size 412KB
            • SHA256 8e5531c2b302f9c95ed32ac7481d3535b6d51147257d317686c07ea1a9cb8362
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.ClientService.dll

            • Path C:\Program Files (x86)\ScreenConnect Client (bf3bdabeba694d7c)\ScreenConnect.ClientService.dll
            • Size 92KB
            • SHA256 ed32fe0d924959020cbef0534a7ba612e94263ccc74837475f3b5a6a726acad0
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.ClientService.exe

            • Path C:\Program Files (x86)\ScreenConnect Client (bf3bdabeba694d7c)\ScreenConnect.ClientService.exe
            • Size 93KB
            • SHA256 16b4c273a25526e7262716ebe9d46480962347191a034595f18be740d9ce1e17
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.Core.dll

            • Path C:\Program Files (x86)\ScreenConnect Client (bf3bdabeba694d7c)\ScreenConnect.Core.dll
            • Size 579KB
            • SHA256 f64cb7ab5f105c22348a22e02dd506ff45456884639fee0f322862112860af24
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.Windows.dll

            • Path C:\Program Files (x86)\ScreenConnect Client (bf3bdabeba694d7c)\ScreenConnect.Windows.dll
            • Size 1.7MB
            • SHA256 c50d6e8d93ed197dd0cfb647743b42a2a6a9289f6db04092f56cefd6d569663e
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.WindowsAuthenticationPackage.dll

            • Path C:\Program Files (x86)\ScreenConnect Client (bf3bdabeba694d7c)\ScreenConnect.WindowsAuthenticationPackage.dll
            • Size 254KB
            • SHA256 a5b8f0070201e4f26260af6a25941ea38bd7042aefd48cd68b9acf951fa99ee5
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.WindowsClient.exe

            • Path C:\Program Files (x86)\ScreenConnect Client (bf3bdabeba694d7c)\ScreenConnect.WindowsClient.exe
            • Size 678KB
            • SHA256 2ad8f126461607aad3fa31a41f1f39bc74f471fd84191b43e205610db2c4cf09
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.WindowsClient.exe.config

            • Path C:\Program Files (x86)\ScreenConnect Client (bf3bdabeba694d7c)\ScreenConnect.WindowsClient.exe.config
            • Size 266B
            • SHA256 87c640d3184c17d3b446a72d5f13d643a774b4ecc7afbedfd4e8da7795ea8077
            • MD5 SHA1 SHA512 TLSH

            ScreenConnect.WindowsCredentialProvider.dll

            • Path C:\Program Files (x86)\ScreenConnect Client (bf3bdabeba694d7c)\ScreenConnect.WindowsCredentialProvider.dll
            • Size 837KB
            • SHA256 4868b7997b9b4260be2df752a81a750388243cdbea37e4d82a9e0101cd29d0c7
            • MD5 SHA1 SHA512 SSDEEP TLSH

            system.config

            • Path C:\Program Files (x86)\ScreenConnect Client (bf3bdabeba694d7c)\system.config
            • Size 964B
            • SHA256 14d66d16efd06f6cc9556dabe4152d039a907ddf084b8b7faf113d92880e1c37
            • MD5 SHA1 SHA512 TLSH

            MSIDC3D.tmp

            • Path C:\Users\Admin\AppData\Local\Temp\MSIDC3D.tmp
            • Size 1.1MB
            • SHA256 de867af8055f81b7691f12175deb4c4e7f3bf97130e51761ed02182b0496e16f
            • MD5 SHA1 SHA512 SSDEEP TLSH

            Microsoft.Deployment.WindowsInstaller.dll

            • Path C:\Users\Admin\AppData\Local\Temp\MSIDC3D.tmp-\Microsoft.Deployment.WindowsInstaller.dll
            • Size 172KB
            • SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.Core.dll

            • Path C:\Users\Admin\AppData\Local\Temp\MSIDC3D.tmp-\ScreenConnect.Core.dll
            • Size 569KB
            • SHA256 e92d94613443befebb55b08f80d10a2fdbfc58233e8dc95cfb4466fde12964f7
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.InstallerActions.dll

            • Path C:\Users\Admin\AppData\Local\Temp\MSIDC3D.tmp-\ScreenConnect.InstallerActions.dll
            • Size 24KB
            • SHA256 d827d3575ca29f8a40ea5379c7df2b315fc72cbd93451de94e199740594b51bb
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.Windows.dll

            • Path C:\Users\Admin\AppData\Local\Temp\MSIDC3D.tmp-\ScreenConnect.Windows.dll
            • Size 1.7MB
            • SHA256 320b89343e896a8d2ebf537861d800a9aca88245cc3b5616bb5bea5cc6797fbb
            • MD5 SHA1 SHA512 SSDEEP TLSH

            CustomAction.config

            • Path C:\Users\Admin\AppData\Local\Temp\MSIE120.tmp-\CustomAction.config
            • Size 234B
            • SHA256 7027b69ab6ebc9f3f7d2f6c800793fde2a057b76010d8cfd831cf440371b2b23
            • MD5 SHA1 SHA512 TLSH

            ScreenConnect.WindowsInstaller.dll

            • Path C:\Users\Admin\AppData\Local\Temp\MSIE120.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\bf3bdabeba694d7c\ScreenConnect.ClientSetup.msi
            • Size 9.8MB
            • SHA256 27ff943a70256d8ebd9e9b5a0998bf2d4cd1d8593a3c676d50bd4339bdbf404f
            • MD5 SHA1 SHA512 SSDEEP TLSH

            MSI2D95.tmp

            • Path C:\Windows\Installer\MSI2D95.tmp
            • Size 202KB
            • SHA256 3cff4ac91288a0ff0c13278e73b282a64e83d089c5a61a45d483194ab336b852
            • MD5 SHA1 SHA512 SSDEEP TLSH

            grmmslsm.newcfg

            • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (bf3bdabeba694d7c)\grmmslsm.newcfg
            • Size 882B
            • SHA256 c432bf9ef1ccd78e998fa2c06470c301bc83856151fdf4e30e68121e58f2e33e
            • MD5 SHA1 SHA512 TLSH

            hnmhz2ea.newcfg

            • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (bf3bdabeba694d7c)\hnmhz2ea.newcfg
            • Size 882B
            • SHA256 b22ea9b093783bdcfbc03e3c805ae70651d77027a32d93628af2050bd53beb55
            • MD5 SHA1 SHA512 TLSH

            user.config

            • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (bf3bdabeba694d7c)\user.config
            • Size 683B
            • SHA256 36f49ef1dd2aae46a0b13234b29269fa10b20228cf7b9c89d134e80b1d48afd0
            • MD5 SHA1 SHA512 TLSH

            user.config

            • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (bf3bdabeba694d7c)\user.config
            • Size 520B
            • SHA256 5428dec51e5dae2ae84e825cd5f3cbbd0beb66d35e3f88747feed7aa28f5d88e
            • MD5 SHA1 SHA512 TLSH

            memory/1716-7-0x00000000060A0000-0x000000000665A000-memory.dmp

            memory/1716-9-0x0000000074EE0000-0x000000007569C000-memory.dmp

            memory/1716-0-0x0000000074EF2000-0x0000000074EF3000-memory.dmp

            memory/1716-6-0x0000000005930000-0x0000000005AE0000-memory.dmp

            memory/1716-5-0x0000000003300000-0x0000000003328000-memory.dmp

            memory/1716-4-0x0000000074EE0000-0x000000007569C000-memory.dmp

            memory/1716-3-0x00000000058A0000-0x0000000005934000-memory.dmp

            memory/1716-2-0x00000000032D0000-0x00000000032DC000-memory.dmp

            memory/1716-11-0x0000000074EE0000-0x000000007569C000-memory.dmp

            memory/1716-1-0x0000000001950000-0x0000000001958000-memory.dmp

            memory/1960-153-0x0000000001CE0000-0x0000000001CFA000-memory.dmp

            memory/1960-193-0x00000000045D0000-0x000000000463C000-memory.dmp

            memory/1960-176-0x0000000004510000-0x0000000004560000-memory.dmp

            memory/1960-198-0x0000000004B00000-0x0000000004BD6000-memory.dmp

            memory/1960-163-0x00000000046C0000-0x0000000004870000-memory.dmp

            memory/1960-196-0x00000000044C0000-0x0000000004501000-memory.dmp

            memory/1960-194-0x0000000004910000-0x00000000049A2000-memory.dmp

            memory/1960-159-0x00000000043D0000-0x0000000004464000-memory.dmp

            memory/2592-218-0x000000001B650000-0x000000001B6BC000-memory.dmp

            memory/2592-217-0x0000000000A00000-0x0000000000AAE000-memory.dmp

            memory/2592-219-0x000000001BA80000-0x000000001BB14000-memory.dmp

            memory/2592-220-0x000000001BCD0000-0x000000001BE80000-memory.dmp

            memory/2592-221-0x000000001B5E0000-0x000000001B5FA000-memory.dmp

            memory/2592-222-0x000000001C010000-0x000000001C198000-memory.dmp

            memory/2592-223-0x000000001B600000-0x000000001B641000-memory.dmp

            memory/2652-73-0x0000000003DD0000-0x0000000003DF8000-memory.dmp

            memory/2732-43-0x0000000005700000-0x00000000058B0000-memory.dmp

            memory/2732-39-0x00000000054B0000-0x0000000005544000-memory.dmp

            memory/2732-35-0x0000000005360000-0x000000000536C000-memory.dmp

            memory/2732-31-0x0000000005330000-0x000000000535E000-memory.dmp