Analysis

  • max time kernel
    148s
  • max time network
    151s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260710-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260710-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    10/09/2026, 12:31

General

  • Target
    ScreenConnect.ClientSetup.msi
  • Size 9.8MB
  • Sample260910-pp388stalh
  • SHA256 97fa4abfb04ee148c4d569d5111d093c3630515d4b9855d351f26e2b45e4e5e9
  • 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:4116
  • 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:4176
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding 52715AD042B9E06C8C89C21D5BC4E48C C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:5600
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI4B86.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240733546 1 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:2948
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI5376.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240735125 10 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.CheckMsiMotw
        3⤵
        • Badlisted process makes network request
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:6120
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI4D68.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240799343 18 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.CheckMsiFileName
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:3464
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:1480
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding EEDC31F274D7BC5CF297822780E77926
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:4972
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 6C3A2EBF0E27F9F26EAEF99FC4178F62 E Global\MSI0000
        2⤵
        • Loads dropped DLL
        • Drops file in Windows directory
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:964
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:1568
    • C:\Program Files (x86)\ScreenConnect Client (6188f30d18045817)\ScreenConnect.ClientService.exe
      "C:\Program Files (x86)\ScreenConnect Client (6188f30d18045817)\ScreenConnect.ClientService.exe" "?e=Access&y=Guest&h=instance-zbzoa4-relay.screenconnect.com&p=443&s=f096cc67-ba53-42e1-b11d-6a06837f3733&k=BgIAAACkAABSU0ExAAgAAAEAAQAxir6BK1H0E7dbI8%2fbeTpFkJi9%2b%2bWksdAQPxEZkMcoX3%2bExUEBdj%2bbw35PtcUigz4WmUmRNYVhHL2FzpCxN4qZsIzykdgLHgvOIV%2b%2fNEasbXTrY4Zt%2f21PtIJGjEtM%2bghGv%2b5rRSS931sz1OOTui7a4uFjUmFNYb1q9xrptOomG6jFJzm5a90pPHzVUjXiDyXMspDmh4eo8BdCqPnNwT%2baWuG5TMLd0qbCH8fNhZNCqCaMN8RX1sT19v1KrKJ3nJQLKIXzqOUJ%2fMkWbvyuCAeulAx7gzvHjILvQ4pIsqD4B%2fbJbVlejm3ZDm5TbacHfpdoVZBHlMfI%2fcKxP3wkHfvd"
      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:1484
      • C:\Program Files (x86)\ScreenConnect Client (6188f30d18045817)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (6188f30d18045817)\ScreenConnect.WindowsClient.exe" "RunRole" "06a65dec-69a3-48c5-9dc1-0e8d652f0dff" "User"
        2⤵
        • Executes dropped EXE
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        PID:2740
      • C:\Program Files (x86)\ScreenConnect Client (6188f30d18045817)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (6188f30d18045817)\ScreenConnect.WindowsClient.exe" "RunRole" "264b921b-7f9f-4d69-bc3d-6a7ac62ff195" "System"
        2⤵
        • Executes dropped EXE
        • Checks processor information in registry
        • Modifies data under HKEY_USERS
        PID:2648

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

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          Downloads

          e5aa645.rbs

          • Path C:\Config.Msi\e5aa645.rbs
          • Size 214KB
          • SHA256 2067f51f6911aa33ce504cc057dd25b37626ccede89e216263e53eb5c2b9659b
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.en-US.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (6188f30d18045817)\Client.en-US.resources
          • Size 64KB
          • SHA256 a90983b3d26f9e6bb472663b84d13254349f62b0ad4c667fd76b3edd270240b2
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (6188f30d18045817)\Client.resources
          • Size 6KB
          • SHA256 bd34378ad99f7609fa0c7c8edde6337c738a61d288863015629329806a1cc728
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Client.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (6188f30d18045817)\ScreenConnect.Client.dll
          • Size 412KB
          • SHA256 27e873d0fceefdd1a12ca77e3bbecec2ece7acdba433b47dca102c35e1c5896c
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (6188f30d18045817)\ScreenConnect.ClientService.dll
          • Size 92KB
          • SHA256 78fa9cf69577f6990275c7c472f7114f9d0c85e660f3b9c81b085fc3cfbc8673
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (6188f30d18045817)\ScreenConnect.ClientService.exe
          • Size 93KB
          • SHA256 5956f9afb3ba610c38b2cfda88dd15be98783963769a12020c93ce05e749b3c3
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (6188f30d18045817)\ScreenConnect.Core.dll
          • Size 582KB
          • SHA256 4eab8752d05cd31bafd07edde7d18061cb63eea99af3132460e6dc08bb5f9e73
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (6188f30d18045817)\ScreenConnect.Windows.dll
          • Size 1.7MB
          • SHA256 ec4de5e6e9c079a30a5780d79ee662e0a4c6d009f0e3f911edc560973fb17d1e
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsAuthenticationPackage.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (6188f30d18045817)\ScreenConnect.WindowsAuthenticationPackage.dll
          • Size 254KB
          • SHA256 a5b8f0070201e4f26260af6a25941ea38bd7042aefd48cd68b9acf951fa99ee5
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsClient.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (6188f30d18045817)\ScreenConnect.WindowsClient.exe
          • Size 685KB
          • SHA256 2763b953657e3c4d6b2f952218a1e1963bcd6971f0b1102d99bb7efea04ceb29
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsClient.exe.config

          • Path C:\Program Files (x86)\ScreenConnect Client (6188f30d18045817)\ScreenConnect.WindowsClient.exe.config
          • Size 266B
          • SHA256 87c640d3184c17d3b446a72d5f13d643a774b4ecc7afbedfd4e8da7795ea8077
          • MD5 SHA1 SHA512 TLSH

          ScreenConnect.WindowsCredentialProvider.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (6188f30d18045817)\ScreenConnect.WindowsCredentialProvider.dll
          • Size 837KB
          • SHA256 7511e679597572782241ff989c065c02f9f5a12ab37290b69a27226eda57ce75
          • MD5 SHA1 SHA512 SSDEEP TLSH

          system.config

          • Path C:\Program Files (x86)\ScreenConnect Client (6188f30d18045817)\system.config
          • Size 972B
          • SHA256 d9c69f2a6e3303a57a4c544e36f99d3f8699c0f5ea80c21abab988250c079530
          • MD5 SHA1 SHA512 TLSH

          MSI4B86.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\MSI4B86.tmp
          • Size 1.1MB
          • SHA256 400ff5b9a4439339876282909b23c397ffa208f4bcf64460fa2521284acf0b6e
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Microsoft.Deployment.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI4B86.tmp-\Microsoft.Deployment.WindowsInstaller.dll
          • Size 172KB
          • SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI4B86.tmp-\ScreenConnect.Core.dll
          • Size 572KB
          • SHA256 74f2d225b492eb77a5654bcaafec5162d0c5f72de884daa4c32daf54e2bff3d7
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.InstallerActions.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI4B86.tmp-\ScreenConnect.InstallerActions.dll
          • Size 24KB
          • SHA256 2022f13b1f562d3cbef3a3926f0370a2de64e57ff281a121f90001a47499a356
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI4B86.tmp-\ScreenConnect.Windows.dll
          • Size 1.7MB
          • SHA256 93f910f732855000861c1b4e6c55a2dee0a8cbb2172d89c7a2bc99053746c193
          • MD5 SHA1 SHA512 SSDEEP TLSH

          CustomAction.config

          • Path C:\Users\Admin\AppData\Local\Temp\MSI5376.tmp-\CustomAction.config
          • Size 234B
          • SHA256 7027b69ab6ebc9f3f7d2f6c800793fde2a057b76010d8cfd831cf440371b2b23
          • MD5 SHA1 SHA512 TLSH

          ScreenConnect.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI5376.tmp-\ScreenConnect.WindowsInstaller.dll
          • Size 137KB
          • SHA256 361bbc692084841e4c8d22c89ca89c711d0fe17bc8759241736531a2f28de25b
          • MD5 SHA1 SHA512 SSDEEP TLSH

          MSIAC50.tmp

          • Path C:\Windows\Installer\MSIAC50.tmp
          • Size 202KB
          • SHA256 3cff4ac91288a0ff0c13278e73b282a64e83d089c5a61a45d483194ab336b852
          • MD5 SHA1 SHA512 SSDEEP TLSH

          e5aa644.msi

          • Path C:\Windows\Installer\e5aa644.msi
          • Size 9.8MB
          • SHA256 97fa4abfb04ee148c4d569d5111d093c3630515d4b9855d351f26e2b45e4e5e9
          • MD5 SHA1 SHA512 SSDEEP TLSH

          bhmw5mlc.newcfg

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (6188f30d18045817)\bhmw5mlc.newcfg
          • Size 683B
          • SHA256 8cd86075e2ebb5d12de794bd3b5958eefae8897d4d02417c4a86727fe521e1a1
          • MD5 SHA1 SHA512 TLSH

          kdykjnwc.newcfg

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (6188f30d18045817)\kdykjnwc.newcfg
          • Size 883B
          • SHA256 a3e1af91f42dc12c4a611307884bf73ab7c240140e411c4bb3b17a0e028d55c6
          • MD5 SHA1 SHA512 TLSH

          user.config

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (6188f30d18045817)\user.config
          • Size 520B
          • SHA256 1d22bcebb363198a7112ecae5cb9b22fc8b1b3663415f6ce563570833256a6b6
          • MD5 SHA1 SHA512 TLSH

          {d5f29c59-851b-478c-81eb-0802e0c7bdeb}_OnDiskSnapshotProp

          • Path \??\Volume{5d76dc85-0000-0000-0000-d08302000000}\System Volume Information\SPP\OnlineMetadataCache\{d5f29c59-851b-478c-81eb-0802e0c7bdeb}_OnDiskSnapshotProp
          • Size 6KB
          • SHA256 62c27b3764b19f7d51e08e971d8ec4231b2e407e6842a5b5032222d90322ece0
          • MD5 SHA1 SHA512 SSDEEP TLSH

          memory/1484-165-0x0000000004150000-0x00000000041A0000-memory.dmp

          memory/1484-152-0x0000000004200000-0x00000000043B0000-memory.dmp

          memory/1484-184-0x0000000004420000-0x000000000448C000-memory.dmp

          memory/1484-185-0x0000000004530000-0x00000000045C2000-memory.dmp

          memory/1484-148-0x0000000003FB0000-0x0000000004046000-memory.dmp

          memory/1484-189-0x0000000004720000-0x00000000047F6000-memory.dmp

          memory/1484-187-0x00000000041A0000-0x00000000041E1000-memory.dmp

          memory/1484-142-0x00000000017D0000-0x00000000017EA000-memory.dmp

          memory/2740-208-0x0000000000B70000-0x0000000000C20000-memory.dmp

          memory/2740-209-0x000000001B7B0000-0x000000001B81C000-memory.dmp

          memory/2740-210-0x000000001BC00000-0x000000001BC96000-memory.dmp

          memory/2740-211-0x000000001BE50000-0x000000001C000000-memory.dmp

          memory/2740-212-0x0000000002F70000-0x0000000002F8A000-memory.dmp

          memory/2740-213-0x000000001C190000-0x000000001C318000-memory.dmp

          memory/2948-33-0x0000000005FC0000-0x0000000006170000-memory.dmp

          memory/2948-21-0x0000000003C40000-0x0000000003C6E000-memory.dmp

          memory/2948-25-0x0000000003C80000-0x0000000003C8C000-memory.dmp

          memory/2948-34-0x0000000006730000-0x0000000006CEA000-memory.dmp

          memory/2948-29-0x0000000005D40000-0x0000000005DD6000-memory.dmp

          memory/6120-64-0x00000000036C0000-0x00000000036E8000-memory.dmp