Analysis

  • max time kernel
    150s
  • 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
    09/09/2026, 00:22

General

  • Target
    ScreenConnect.ClientSetup.msi
  • Size 9.8MB
  • Sample260909-anz3vszthx
  • SHA256 bdb6cdbb79a298eb6f2ee45c4b004338b882f5e6ee9aa24f2d973d3da4094220
  • 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.

  • 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:4712
  • 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:6032
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding DAB5F8D9D02FDABEB9DCC5E839C2CE60 C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:5460
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI5087.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240734656 1 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:5376
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI5710.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240736250 10 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.CheckMsiMotw
        3⤵
        • Badlisted process makes network request
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:3828
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI3D5A.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240795000 17 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.CheckMsiFileName
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:1936
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:5000
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 7A5875906927A40134A2AFDDD79BFE9B
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:5028
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 52F5EC3EB2DA3A819DD2A797FB250694 E Global\MSI0000
        2⤵
        • Loads dropped DLL
        • Drops file in Windows directory
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:2996
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:5904
    • C:\Program Files (x86)\ScreenConnect Client (801dcfb7db58a19e)\ScreenConnect.ClientService.exe
      "C:\Program Files (x86)\ScreenConnect Client (801dcfb7db58a19e)\ScreenConnect.ClientService.exe" "?e=Access&y=Guest&h=instance-jkmy42-relay.screenconnect.com&p=443&s=79b1fe75-b95f-4999-9305-e6f4747771ef&k=BgIAAACkAABSU0ExAAgAAAEAAQB9dRNp2nrkP04kMV2AYl8SUTJK%2bi1AlEzf%2boGtGkm0dEWg6ectJDwNY%2bP3VMbjNOQGZrgOrkzZC61AnxJvX4tSrM%2fAaUcZdXTE%2bG9gL%2bGQ3HsEWJAuDcdizqdksfSt179lpmbdklMIgYIeCWEuSVzc0ppyNVTXu%2fSxkJ0VefoGNG9WWR7YcicfzsMuVVpULWTbg98ReuxVM669uds8EtwjiyWGX7adZsEeW9BdrmSIoIuhUGLQMKnmRinqQnA2FlOVRCxc6gv8jBxiemQLQVXsnAMbn5nTUMKtmwZcyy1SoL4PtO59z3AzQ63HDABCkLdY6BwVu7FlnrRNZX91rrKx"
      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:4704
      • C:\Program Files (x86)\ScreenConnect Client (801dcfb7db58a19e)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (801dcfb7db58a19e)\ScreenConnect.WindowsClient.exe" "RunRole" "2104167f-8d9a-41ad-b420-ccfd5c790fad" "User"
        2⤵
        • Executes dropped EXE
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        PID:5980
      • C:\Program Files (x86)\ScreenConnect Client (801dcfb7db58a19e)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (801dcfb7db58a19e)\ScreenConnect.WindowsClient.exe" "RunRole" "77463633-0210-4651-8c15-b865669df105" "System"
        2⤵
        • Executes dropped EXE
        • Checks processor information in registry
        • Modifies data under HKEY_USERS
        PID:1188

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

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          Downloads

          e5a863a.rbs

          • Path C:\Config.Msi\e5a863a.rbs
          • Size 214KB
          • SHA256 015116b180b90d0b3ff0bbf494f77c14bc709dc11ac6413d9b52e72f6d7226a9
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.en-US.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (801dcfb7db58a19e)\Client.en-US.resources
          • Size 64KB
          • SHA256 a90983b3d26f9e6bb472663b84d13254349f62b0ad4c667fd76b3edd270240b2
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (801dcfb7db58a19e)\Client.resources
          • Size 6KB
          • SHA256 bd34378ad99f7609fa0c7c8edde6337c738a61d288863015629329806a1cc728
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Client.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (801dcfb7db58a19e)\ScreenConnect.Client.dll
          • Size 412KB
          • SHA256 27e873d0fceefdd1a12ca77e3bbecec2ece7acdba433b47dca102c35e1c5896c
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (801dcfb7db58a19e)\ScreenConnect.ClientService.dll
          • Size 92KB
          • SHA256 78fa9cf69577f6990275c7c472f7114f9d0c85e660f3b9c81b085fc3cfbc8673
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (801dcfb7db58a19e)\ScreenConnect.ClientService.exe
          • Size 93KB
          • SHA256 5956f9afb3ba610c38b2cfda88dd15be98783963769a12020c93ce05e749b3c3
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (801dcfb7db58a19e)\ScreenConnect.Core.dll
          • Size 582KB
          • SHA256 4eab8752d05cd31bafd07edde7d18061cb63eea99af3132460e6dc08bb5f9e73
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (801dcfb7db58a19e)\ScreenConnect.Windows.dll
          • Size 1.7MB
          • SHA256 ec4de5e6e9c079a30a5780d79ee662e0a4c6d009f0e3f911edc560973fb17d1e
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsAuthenticationPackage.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (801dcfb7db58a19e)\ScreenConnect.WindowsAuthenticationPackage.dll
          • Size 254KB
          • SHA256 a5b8f0070201e4f26260af6a25941ea38bd7042aefd48cd68b9acf951fa99ee5
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsClient.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (801dcfb7db58a19e)\ScreenConnect.WindowsClient.exe
          • Size 685KB
          • SHA256 2763b953657e3c4d6b2f952218a1e1963bcd6971f0b1102d99bb7efea04ceb29
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsClient.exe.config

          • Path C:\Program Files (x86)\ScreenConnect Client (801dcfb7db58a19e)\ScreenConnect.WindowsClient.exe.config
          • Size 266B
          • SHA256 87c640d3184c17d3b446a72d5f13d643a774b4ecc7afbedfd4e8da7795ea8077
          • MD5 SHA1 SHA512 TLSH

          ScreenConnect.WindowsCredentialProvider.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (801dcfb7db58a19e)\ScreenConnect.WindowsCredentialProvider.dll
          • Size 837KB
          • SHA256 7511e679597572782241ff989c065c02f9f5a12ab37290b69a27226eda57ce75
          • MD5 SHA1 SHA512 SSDEEP TLSH

          system.config

          • Path C:\Program Files (x86)\ScreenConnect Client (801dcfb7db58a19e)\system.config
          • Size 958B
          • SHA256 6c8d042b5f537d05222bfbe827527e358b43689ebd27fc50265ab41a6155d29b
          • MD5 SHA1 SHA512 TLSH

          MSI5087.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\MSI5087.tmp
          • Size 1.1MB
          • SHA256 400ff5b9a4439339876282909b23c397ffa208f4bcf64460fa2521284acf0b6e
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Microsoft.Deployment.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI5087.tmp-\Microsoft.Deployment.WindowsInstaller.dll
          • Size 172KB
          • SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI5087.tmp-\ScreenConnect.Core.dll
          • Size 572KB
          • SHA256 74f2d225b492eb77a5654bcaafec5162d0c5f72de884daa4c32daf54e2bff3d7
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.InstallerActions.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI5087.tmp-\ScreenConnect.InstallerActions.dll
          • Size 24KB
          • SHA256 2022f13b1f562d3cbef3a3926f0370a2de64e57ff281a121f90001a47499a356
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI5087.tmp-\ScreenConnect.Windows.dll
          • Size 1.7MB
          • SHA256 93f910f732855000861c1b4e6c55a2dee0a8cbb2172d89c7a2bc99053746c193
          • MD5 SHA1 SHA512 SSDEEP TLSH

          CustomAction.config

          • Path C:\Users\Admin\AppData\Local\Temp\MSI5710.tmp-\CustomAction.config
          • Size 234B
          • SHA256 7027b69ab6ebc9f3f7d2f6c800793fde2a057b76010d8cfd831cf440371b2b23
          • MD5 SHA1 SHA512 TLSH

          ScreenConnect.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI5710.tmp-\ScreenConnect.WindowsInstaller.dll
          • Size 137KB
          • SHA256 361bbc692084841e4c8d22c89ca89c711d0fe17bc8759241736531a2f28de25b
          • MD5 SHA1 SHA512 SSDEEP TLSH

          MSI8B2B.tmp

          • Path C:\Windows\Installer\MSI8B2B.tmp
          • Size 202KB
          • SHA256 3cff4ac91288a0ff0c13278e73b282a64e83d089c5a61a45d483194ab336b852
          • MD5 SHA1 SHA512 SSDEEP TLSH

          e5a8639.msi

          • Path C:\Windows\Installer\e5a8639.msi
          • Size 9.8MB
          • SHA256 bdb6cdbb79a298eb6f2ee45c4b004338b882f5e6ee9aa24f2d973d3da4094220
          • MD5 SHA1 SHA512 SSDEEP TLSH

          qml1akvk.newcfg

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (801dcfb7db58a19e)\qml1akvk.newcfg
          • Size 882B
          • SHA256 e021fd20ae1da8a316ad73d9f22eae211fe2575443874accaf651cd6c1436c80
          • MD5 SHA1 SHA512 TLSH

          thtp4v3f.newcfg

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (801dcfb7db58a19e)\thtp4v3f.newcfg
          • Size 683B
          • SHA256 8a6503cac83b1efe3fcdb7707d90121baf05cba99c8f13e9d5f42e7f04698012
          • MD5 SHA1 SHA512 TLSH

          user.config

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (801dcfb7db58a19e)\user.config
          • Size 520B
          • SHA256 d2beced8742eca989bf08d3d21b104a1d7cdf20d85c64f8a2e5531853a1b432d
          • MD5 SHA1 SHA512 TLSH

          {02f9084b-4fc5-44b7-b42c-ced196865c96}_OnDiskSnapshotProp

          • Path \??\Volume{c61fa831-0000-0000-0000-d08302000000}\System Volume Information\SPP\OnlineMetadataCache\{02f9084b-4fc5-44b7-b42c-ced196865c96}_OnDiskSnapshotProp
          • Size 6KB
          • SHA256 12087116e02500bc18803043ca942bc2cba7385df40c901bf5fa397ba89ee330
          • MD5 SHA1 SHA512 SSDEEP TLSH

          memory/1188-216-0x000000001D5B0000-0x000000001D6A0000-memory.dmp

          memory/3828-64-0x0000000003710000-0x0000000003738000-memory.dmp

          memory/4704-142-0x00000000021E0000-0x00000000021FA000-memory.dmp

          memory/4704-164-0x0000000004C50000-0x0000000004CA0000-memory.dmp

          memory/4704-184-0x0000000004ED0000-0x0000000004F3C000-memory.dmp

          memory/4704-187-0x0000000004E60000-0x0000000004EA1000-memory.dmp

          memory/4704-189-0x00000000051D0000-0x00000000052A6000-memory.dmp

          memory/4704-148-0x0000000004A60000-0x0000000004AF6000-memory.dmp

          memory/4704-185-0x0000000004FE0000-0x0000000005072000-memory.dmp

          memory/4704-152-0x0000000004CB0000-0x0000000004E60000-memory.dmp

          memory/5376-33-0x00000000061F0000-0x00000000063A0000-memory.dmp

          memory/5376-25-0x0000000005EF0000-0x0000000005EFC000-memory.dmp

          memory/5376-21-0x0000000005EB0000-0x0000000005EDE000-memory.dmp

          memory/5376-29-0x0000000005FA0000-0x0000000006036000-memory.dmp

          memory/5376-34-0x0000000006960000-0x0000000006F1A000-memory.dmp

          memory/5980-207-0x0000000000FD0000-0x0000000001080000-memory.dmp

          memory/5980-209-0x000000001C0F0000-0x000000001C186000-memory.dmp

          memory/5980-211-0x000000001C340000-0x000000001C4F0000-memory.dmp

          memory/5980-212-0x00000000031A0000-0x00000000031BA000-memory.dmp

          memory/5980-208-0x0000000003260000-0x00000000032CC000-memory.dmp

          memory/5980-213-0x000000001C680000-0x000000001C808000-memory.dmp

          memory/5980-214-0x00000000031E0000-0x0000000003221000-memory.dmp