Analysis

  • max time kernel
    148s
  • max time network
    125s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    25/08/2026, 18:19

General

  • Target
    ScreenConnect.ClientSetup.msi
  • Size 9.8MB
  • Sample260825-wym2yaxdnd
  • SHA256 c6ebdabe4336d825f9f395185d08ca616e3e7575f7ebd9970c98729b2f8feba3
  • 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.

  • 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.

  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 42 IoCs
  • 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
  • Drops file in Program Files directory 16 IoCs
  • Drops file in Windows directory 17 IoCs
  • Event Triggered Execution: Installer Packages 2 TTPs 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 7 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 9 IoCs
  • Uses Volume Shadow Copy service COM API

    The Volume Shadow Copy service is used to manage backups/snapshots.

Processes

  • C:\Windows\system32\msiexec.exe
    msiexec.exe /I C:\Users\Admin\AppData\Local\Temp\ScreenConnect.ClientSetup.msi
    1⤵
    • Badlisted process makes network request
    • Enumerates connected drives
    • Event Triggered Execution: Installer Packages
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SetWindowsHookEx
    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:624
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding D2BBCDD23CA7D77104308E3483EF26EE C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:3008
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI2726.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240724187 1 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:4980
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI2ED7.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240725765 10 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.CheckMsiMotw
        3⤵
        • Badlisted process makes network request
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:1456
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI37B2.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240728187 17 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.CheckMsiFileName
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:264
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:3244
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 6FC8E4EE0C7D0FD9E8C72E214AA488D2
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:4792
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding F5E373CD17ED31AE6BC86FB5921A90B5 E Global\MSI0000
        2⤵
        • Loads dropped DLL
        • Drops file in Windows directory
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:4724
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:5648
    • C:\Program Files (x86)\ScreenConnect Client (4feedc768e18e164)\ScreenConnect.ClientService.exe
      "C:\Program Files (x86)\ScreenConnect Client (4feedc768e18e164)\ScreenConnect.ClientService.exe" "?e=Access&y=Guest&h=instance-dfcgl4-relay.screenconnect.com&p=443&s=9bfc02e3-f316-46be-a967-7b7202e70f65&k=BgIAAACkAABSU0ExAAgAAAEAAQBBhWtwECL%2bwvzpFgPHDssxva8h0O8%2fGR%2fj6b0il4NzIz2mIsEOKWzhmCu%2fDIi62aOm634kf3%2bo1OZrH7DgE0i8caFDMRZ3zsmgJuYEf2MrThE4hzzZx58YIB3Pav3Emf7lQuSM0cDUvB539i9tVFqCZ5BHL5iQqX8KeYjNOcOsC9edvDCNA9RQhmT6hKNejdArLz%2bRX5YygNIZ0lalkZZaNIg%2bXnfWIxCvdRQ3%2bHXiKnuwt2B08ZqByFczd%2b8uhKTw6UK4amoTWlpMnWNfZvPdoHhytqCDJvOatAs8yYU5SINC1%2bgijDFa0k2x3wTeghk65jttRgvwfKBJ%2bnsT0wDq"
      1⤵
      • Sets service image path in registry
      • Executes dropped EXE
      • Loads dropped DLL
      • Drops file in System32 directory
      • System Location Discovery: System Language Discovery
      • Modifies data under HKEY_USERS
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:2336
      • C:\Program Files (x86)\ScreenConnect Client (4feedc768e18e164)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (4feedc768e18e164)\ScreenConnect.WindowsClient.exe" "RunRole" "57669a8c-7d73-4dc0-8611-de5febc2535f" "User"
        2⤵
        • Executes dropped EXE
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        PID:3724
      • C:\Program Files (x86)\ScreenConnect Client (4feedc768e18e164)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (4feedc768e18e164)\ScreenConnect.WindowsClient.exe" "RunRole" "28a7b1d2-d8e1-46e7-85de-1392c673237a" "System"
        2⤵
        • Executes dropped EXE
        • Checks processor information in registry
        • Modifies data under HKEY_USERS
        PID:5676

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

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          Downloads

          e5993fa.rbs

          • Path C:\Config.Msi\e5993fa.rbs
          • Size 214KB
          • SHA256 44b9941b23aad24b9db556b0aa3ddbb56556fbe750d0f10954cc559fa2d22af7
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.en-US.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (4feedc768e18e164)\Client.en-US.resources
          • Size 64KB
          • SHA256 a90983b3d26f9e6bb472663b84d13254349f62b0ad4c667fd76b3edd270240b2
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (4feedc768e18e164)\Client.resources
          • Size 6KB
          • SHA256 bd34378ad99f7609fa0c7c8edde6337c738a61d288863015629329806a1cc728
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Client.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (4feedc768e18e164)\ScreenConnect.Client.dll
          • Size 412KB
          • SHA256 8e5531c2b302f9c95ed32ac7481d3535b6d51147257d317686c07ea1a9cb8362
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (4feedc768e18e164)\ScreenConnect.ClientService.dll
          • Size 92KB
          • SHA256 ed32fe0d924959020cbef0534a7ba612e94263ccc74837475f3b5a6a726acad0
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (4feedc768e18e164)\ScreenConnect.ClientService.exe
          • Size 93KB
          • SHA256 16b4c273a25526e7262716ebe9d46480962347191a034595f18be740d9ce1e17
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (4feedc768e18e164)\ScreenConnect.Core.dll
          • Size 579KB
          • SHA256 f64cb7ab5f105c22348a22e02dd506ff45456884639fee0f322862112860af24
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (4feedc768e18e164)\ScreenConnect.Windows.dll
          • Size 1.7MB
          • SHA256 c50d6e8d93ed197dd0cfb647743b42a2a6a9289f6db04092f56cefd6d569663e
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsAuthenticationPackage.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (4feedc768e18e164)\ScreenConnect.WindowsAuthenticationPackage.dll
          • Size 254KB
          • SHA256 a5b8f0070201e4f26260af6a25941ea38bd7042aefd48cd68b9acf951fa99ee5
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsClient.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (4feedc768e18e164)\ScreenConnect.WindowsClient.exe
          • Size 678KB
          • SHA256 2ad8f126461607aad3fa31a41f1f39bc74f471fd84191b43e205610db2c4cf09
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsClient.exe.config

          • Path C:\Program Files (x86)\ScreenConnect Client (4feedc768e18e164)\ScreenConnect.WindowsClient.exe.config
          • Size 266B
          • SHA256 87c640d3184c17d3b446a72d5f13d643a774b4ecc7afbedfd4e8da7795ea8077
          • MD5 SHA1 SHA512 TLSH

          ScreenConnect.WindowsCredentialProvider.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (4feedc768e18e164)\ScreenConnect.WindowsCredentialProvider.dll
          • Size 837KB
          • SHA256 4868b7997b9b4260be2df752a81a750388243cdbea37e4d82a9e0101cd29d0c7
          • MD5 SHA1 SHA512 SSDEEP TLSH

          system.config

          • Path C:\Program Files (x86)\ScreenConnect Client (4feedc768e18e164)\system.config
          • Size 966B
          • SHA256 8796bb354734f82a67a8484dc33e10f9060d137e24e3739732e03694bd8948aa
          • MD5 SHA1 SHA512 TLSH

          MSI2726.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\MSI2726.tmp
          • Size 1.1MB
          • SHA256 de867af8055f81b7691f12175deb4c4e7f3bf97130e51761ed02182b0496e16f
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Microsoft.Deployment.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI2726.tmp-\Microsoft.Deployment.WindowsInstaller.dll
          • Size 172KB
          • SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI2726.tmp-\ScreenConnect.Core.dll
          • Size 569KB
          • SHA256 e92d94613443befebb55b08f80d10a2fdbfc58233e8dc95cfb4466fde12964f7
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.InstallerActions.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI2726.tmp-\ScreenConnect.InstallerActions.dll
          • Size 24KB
          • SHA256 d827d3575ca29f8a40ea5379c7df2b315fc72cbd93451de94e199740594b51bb
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI2726.tmp-\ScreenConnect.Windows.dll
          • Size 1.7MB
          • SHA256 320b89343e896a8d2ebf537861d800a9aca88245cc3b5616bb5bea5cc6797fbb
          • MD5 SHA1 SHA512 SSDEEP TLSH

          CustomAction.config

          • Path C:\Users\Admin\AppData\Local\Temp\MSI2ED7.tmp-\CustomAction.config
          • Size 234B
          • SHA256 7027b69ab6ebc9f3f7d2f6c800793fde2a057b76010d8cfd831cf440371b2b23
          • MD5 SHA1 SHA512 TLSH

          ScreenConnect.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI2ED7.tmp-\ScreenConnect.WindowsInstaller.dll
          • Size 137KB
          • SHA256 dbf379b93127345a83282380aee634d0b70ec731acfeea76617c76e76fdc764f
          • MD5 SHA1 SHA512 SSDEEP TLSH

          MSI9A14.tmp

          • Path C:\Windows\Installer\MSI9A14.tmp
          • Size 202KB
          • SHA256 3cff4ac91288a0ff0c13278e73b282a64e83d089c5a61a45d483194ab336b852
          • MD5 SHA1 SHA512 SSDEEP TLSH

          e5993f9.msi

          • Path C:\Windows\Installer\e5993f9.msi
          • Size 9.8MB
          • SHA256 c6ebdabe4336d825f9f395185d08ca616e3e7575f7ebd9970c98729b2f8feba3
          • MD5 SHA1 SHA512 SSDEEP TLSH

          uoynmbgp.newcfg

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (4feedc768e18e164)\uoynmbgp.newcfg
          • Size 683B
          • SHA256 3d9a4a01046017eeba9e4608286ae0ce3c767ec5b1eb4348e9910c2331350018
          • MD5 SHA1 SHA512 TLSH

          user.config

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (4feedc768e18e164)\user.config
          • Size 520B
          • SHA256 5301a66fbdcb6bd5ce9dbc9f619b0dda60855de946cde4744a57d464124ffad3
          • MD5 SHA1 SHA512 TLSH

          y4d3q2s2.newcfg

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (4feedc768e18e164)\y4d3q2s2.newcfg
          • Size 881B
          • SHA256 97d85442c39a315f873c020c1ed8d32b110a94ca6906fdae8e133272d11c0ab5
          • MD5 SHA1 SHA512 TLSH

          metadata-2

          • Path \??\GLOBALROOT\Device\HarddiskVolumeShadowCopy2\System Volume Information\SPP\metadata-2
          • Size 26.1MB
          • SHA256 10994afa355dda215dd5ff332ff64748105f87849d81b689cbeee845b512f057
          • MD5 SHA1 SHA512 SSDEEP TLSH

          {71f83fbc-6913-423d-926a-a48bab62278a}_OnDiskSnapshotProp

          • Path \??\Volume{c61fa831-0000-0000-0000-d08302000000}\System Volume Information\SPP\OnlineMetadataCache\{71f83fbc-6913-423d-926a-a48bab62278a}_OnDiskSnapshotProp
          • Size 6KB
          • SHA256 5aa5b31ec220a5c16fbfd025d8b4ac43ecfa29214aeb1dad6f26006a04480e8b
          • MD5 SHA1 SHA512 SSDEEP TLSH

          memory/1456-64-0x00000000057D0000-0x00000000057F8000-memory.dmp

          memory/2336-183-0x00000000044A0000-0x000000000450C000-memory.dmp

          memory/2336-184-0x00000000047E0000-0x0000000004872000-memory.dmp

          memory/2336-141-0x0000000001BD0000-0x0000000001BEA000-memory.dmp

          memory/2336-186-0x0000000004430000-0x0000000004471000-memory.dmp

          memory/2336-188-0x00000000049D0000-0x0000000004AA6000-memory.dmp

          memory/2336-164-0x00000000043E0000-0x0000000004430000-memory.dmp

          memory/2336-147-0x0000000004340000-0x00000000043D4000-memory.dmp

          memory/2336-151-0x0000000004590000-0x0000000004740000-memory.dmp

          memory/3724-206-0x0000000000020000-0x00000000000CE000-memory.dmp

          memory/3724-207-0x000000001ACD0000-0x000000001AD3C000-memory.dmp

          memory/3724-209-0x000000001B0E0000-0x000000001B174000-memory.dmp

          memory/3724-210-0x000000001B330000-0x000000001B4E0000-memory.dmp

          memory/3724-211-0x0000000000970000-0x000000000098A000-memory.dmp

          memory/3724-212-0x000000001B670000-0x000000001B7F8000-memory.dmp

          memory/4980-25-0x0000000003420000-0x000000000342C000-memory.dmp

          memory/4980-21-0x0000000003430000-0x000000000345E000-memory.dmp

          memory/4980-29-0x0000000005540000-0x00000000055D4000-memory.dmp

          memory/4980-33-0x00000000058F0000-0x0000000005AA0000-memory.dmp

          memory/4980-34-0x0000000006060000-0x000000000661A000-memory.dmp