Analysis

  • max time kernel
    149s
  • max time network
    131s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260911-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    04/11/2026, 18:23

General

  • Target
    ScreenConnect.ClientSetup.exe
  • Size 12.2MB
  • Sample261104-w1l8esec64
  • SHA256 063c669335f3050adf6858f914e9afd10d63ff74dd03f2d936049cf5102e371a
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Badlisted process makes network request 1 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).

  • Reads the TCP/IP host and domain name from the registry 1 TTPs 6 IoCs

    The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.

  • 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:5032
    • C:\Windows\SysWOW64\msiexec.exe
      "C:\Windows\System32\msiexec.exe" /i "C:\Users\Admin\AppData\Local\Temp\ScreenConnect\26.6.5.9742\cfaa211ec8572e9d\ScreenConnect.ClientSetup.msi" SC_EXE_PATH="C:\Users\Admin\AppData\Local\Temp\ScreenConnect.ClientSetup.exe"
      2⤵
      • Enumerates connected drives
      • System Location Discovery: System Language Discovery
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SetWindowsHookEx
      PID:2108
  • 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:4244
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding 88358BE00A349B751ED7681AA7B89A18 C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:4200
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI3ACD.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240728937 1 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:4532
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI400E.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240730281 10 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.CheckMsiMotw
        3⤵
        • Badlisted process makes network request
        • Loads dropped DLL
        • Reads the TCP/IP host and domain name from the registry
        • System Location Discovery: System Language Discovery
        PID:1952
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI4704.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240732093 17 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.CheckMsiFileName
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:5008
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:952
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding B5E450A2330BEC53574214EE654AC3C3
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:6120
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding DC8951E60691D649392BDD68CF15E4F2 E Global\MSI0000
        2⤵
        • Drops file in Windows directory
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:2500
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:2940
    • C:\Program Files (x86)\ScreenConnect Client (cfaa211ec8572e9d)\ScreenConnect.ClientService.exe
      "C:\Program Files (x86)\ScreenConnect Client (cfaa211ec8572e9d)\ScreenConnect.ClientService.exe" "?e=Access&y=Guest&h=instance-oszi45-relay.screenconnect.com&p=443&s=ba14edfe-f921-4e9c-854d-8b417e7320ce&k=BgIAAACkAABSU0ExAAgAAAEAAQBthlSN9h89mkuyKabz4E78AWb4hrOfpaOBdE%2bgujyFzrSVYG%2b4x8o9nHLT2PBtBSQl0mraoLLB%2bDbyOYc5d2jP2zJXvae%2bGwy80OUVy2JkNtaLAkq%2bnXi%2br4WUfVC2U8KWQSMgyQYVrNVo5%2bGHUAGiXKlkI2n8n3amzlMPS36Mgfi%2fkWm46IQl72yrQDAB7IhuJ3SdBkbfHx4Pb%2fF%2bVAIhSKqCly74cuFLpsxNH86kPWrSRvvRbUvGTfSIyzXUhNB5mjlM5y5l1BA1DPC%2bHs5qdPy45HQAR5jyavSEoslsMheHQPX4YVE6xQPsnRzPUCmXJ%2bCKM%2bhaTKSaDkRKzla9"
      1⤵
      • Sets service image path in registry
      • Drops file in System32 directory
      • Executes dropped EXE
      • Loads dropped DLL
      • Reads the TCP/IP host and domain name from the registry
      • System Location Discovery: System Language Discovery
      • Modifies data under HKEY_USERS
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:1640
      • C:\Program Files (x86)\ScreenConnect Client (cfaa211ec8572e9d)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (cfaa211ec8572e9d)\ScreenConnect.WindowsClient.exe" "RunRole" "eeddff73-1831-4f9d-897f-fc1fd668224e" "User"
        2⤵
        • Executes dropped EXE
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        PID:4236
      • C:\Program Files (x86)\ScreenConnect Client (cfaa211ec8572e9d)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (cfaa211ec8572e9d)\ScreenConnect.WindowsClient.exe" "RunRole" "51c36bf9-cd65-4a02-b168-11bda8eb9e95" "System"
        2⤵
        • Executes dropped EXE
        • Reads the TCP/IP host and domain name from the registry
        • Checks processor information in registry
        • Modifies data under HKEY_USERS
        PID:2648

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          e5997e2.rbs

          • Path C:\Config.Msi\e5997e2.rbs
          • Size 214KB
          • SHA256 3b8b58344c89aa59b0a520336f15e650d72934b02fb5ad541a159e47ea920e41
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.en-US.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (cfaa211ec8572e9d)\Client.en-US.resources
          • Size 64KB
          • SHA256 a90983b3d26f9e6bb472663b84d13254349f62b0ad4c667fd76b3edd270240b2
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (cfaa211ec8572e9d)\Client.resources
          • Size 6KB
          • SHA256 bd34378ad99f7609fa0c7c8edde6337c738a61d288863015629329806a1cc728
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Client.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (cfaa211ec8572e9d)\ScreenConnect.Client.dll
          • Size 412KB
          • SHA256 27e873d0fceefdd1a12ca77e3bbecec2ece7acdba433b47dca102c35e1c5896c
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (cfaa211ec8572e9d)\ScreenConnect.ClientService.dll
          • Size 92KB
          • SHA256 78fa9cf69577f6990275c7c472f7114f9d0c85e660f3b9c81b085fc3cfbc8673
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (cfaa211ec8572e9d)\ScreenConnect.ClientService.exe
          • Size 93KB
          • SHA256 5956f9afb3ba610c38b2cfda88dd15be98783963769a12020c93ce05e749b3c3
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (cfaa211ec8572e9d)\ScreenConnect.Core.dll
          • Size 582KB
          • SHA256 4eab8752d05cd31bafd07edde7d18061cb63eea99af3132460e6dc08bb5f9e73
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (cfaa211ec8572e9d)\ScreenConnect.Windows.dll
          • Size 1.7MB
          • SHA256 ec4de5e6e9c079a30a5780d79ee662e0a4c6d009f0e3f911edc560973fb17d1e
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsAuthenticationPackage.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (cfaa211ec8572e9d)\ScreenConnect.WindowsAuthenticationPackage.dll
          • Size 254KB
          • SHA256 a5b8f0070201e4f26260af6a25941ea38bd7042aefd48cd68b9acf951fa99ee5
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsClient.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (cfaa211ec8572e9d)\ScreenConnect.WindowsClient.exe
          • Size 685KB
          • SHA256 2763b953657e3c4d6b2f952218a1e1963bcd6971f0b1102d99bb7efea04ceb29
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsClient.exe.config

          • Path C:\Program Files (x86)\ScreenConnect Client (cfaa211ec8572e9d)\ScreenConnect.WindowsClient.exe.config
          • Size 266B
          • SHA256 87c640d3184c17d3b446a72d5f13d643a774b4ecc7afbedfd4e8da7795ea8077
          • MD5 SHA1 SHA512 TLSH

          ScreenConnect.WindowsCredentialProvider.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (cfaa211ec8572e9d)\ScreenConnect.WindowsCredentialProvider.dll
          • Size 837KB
          • SHA256 7511e679597572782241ff989c065c02f9f5a12ab37290b69a27226eda57ce75
          • MD5 SHA1 SHA512 SSDEEP TLSH

          system.config

          • Path C:\Program Files (x86)\ScreenConnect Client (cfaa211ec8572e9d)\system.config
          • Size 970B
          • SHA256 5e42c2877e37f70671cf6fa5ba5fe75912a581332f38c36f09f51cdf598a5a34
          • MD5 SHA1 SHA512 TLSH

          MSI3ACD.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\MSI3ACD.tmp
          • Size 1.1MB
          • SHA256 400ff5b9a4439339876282909b23c397ffa208f4bcf64460fa2521284acf0b6e
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Microsoft.Deployment.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI3ACD.tmp-\Microsoft.Deployment.WindowsInstaller.dll
          • Size 172KB
          • SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI3ACD.tmp-\ScreenConnect.Core.dll
          • Size 572KB
          • SHA256 74f2d225b492eb77a5654bcaafec5162d0c5f72de884daa4c32daf54e2bff3d7
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.InstallerActions.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI3ACD.tmp-\ScreenConnect.InstallerActions.dll
          • Size 24KB
          • SHA256 2022f13b1f562d3cbef3a3926f0370a2de64e57ff281a121f90001a47499a356
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI3ACD.tmp-\ScreenConnect.Windows.dll
          • Size 1.7MB
          • SHA256 93f910f732855000861c1b4e6c55a2dee0a8cbb2172d89c7a2bc99053746c193
          • MD5 SHA1 SHA512 SSDEEP TLSH

          CustomAction.config

          • Path C:\Users\Admin\AppData\Local\Temp\MSI400E.tmp-\CustomAction.config
          • Size 234B
          • SHA256 7027b69ab6ebc9f3f7d2f6c800793fde2a057b76010d8cfd831cf440371b2b23
          • MD5 SHA1 SHA512 TLSH

          ScreenConnect.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI400E.tmp-\ScreenConnect.WindowsInstaller.dll
          • Size 137KB
          • SHA256 361bbc692084841e4c8d22c89ca89c711d0fe17bc8759241736531a2f28de25b
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientSetup.msi

          • Path C:\Users\Admin\AppData\Local\Temp\ScreenConnect\26.6.5.9742\cfaa211ec8572e9d\ScreenConnect.ClientSetup.msi
          • Size 9.8MB
          • SHA256 0da56ee7bbaf5f6efc7bc8c130b010ac997e3a758696ff05ea51fabbd3fd6580
          • MD5 SHA1 SHA512 SSDEEP TLSH

          MSI9D51.tmp

          • Path C:\Windows\Installer\MSI9D51.tmp
          • Size 202KB
          • SHA256 3cff4ac91288a0ff0c13278e73b282a64e83d089c5a61a45d483194ab336b852
          • MD5 SHA1 SHA512 SSDEEP TLSH

          e1um34t0.newcfg

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (cfaa211ec8572e9d)\e1um34t0.newcfg
          • Size 882B
          • SHA256 d7018bd08d3a5c11aff22d3936982dd6eb64a3ec2a4438f9356d0b6a1731c427
          • MD5 SHA1 SHA512 TLSH

          user.config

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (cfaa211ec8572e9d)\user.config
          • Size 520B
          • SHA256 16f92fb86e3933e4ad8bae1828611ed0ddb1cf5df8dc3149c2c292c4bcc2021c
          • MD5 SHA1 SHA512 TLSH

          xfq0u113.newcfg

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (cfaa211ec8572e9d)\xfq0u113.newcfg
          • Size 683B
          • SHA256 23220ee9d982ca1dbf0fed197ba7cc634ec822b9459dafc63ce43eee8b9a9ce8
          • MD5 SHA1 SHA512 TLSH

          memory/1640-152-0x0000000001EA0000-0x0000000001EBA000-memory.dmp

          memory/1640-201-0x0000000004B90000-0x0000000004C66000-memory.dmp

          memory/1640-197-0x00000000049A0000-0x0000000004A32000-memory.dmp

          memory/1640-199-0x0000000004650000-0x0000000004691000-memory.dmp

          memory/1640-196-0x00000000046C0000-0x000000000472C000-memory.dmp

          memory/1640-158-0x0000000004500000-0x0000000004596000-memory.dmp

          memory/1640-162-0x0000000004750000-0x0000000004900000-memory.dmp

          memory/1640-175-0x0000000004600000-0x0000000004650000-memory.dmp

          memory/1952-75-0x00000000058B0000-0x00000000058D8000-memory.dmp

          memory/4236-222-0x00000000009E0000-0x0000000000A4C000-memory.dmp

          memory/4236-223-0x000000001AE10000-0x000000001AEA6000-memory.dmp

          memory/4236-224-0x000000001B3A0000-0x000000001B550000-memory.dmp

          memory/4236-225-0x0000000000930000-0x000000000094A000-memory.dmp

          memory/4236-226-0x000000001B6E0000-0x000000001B868000-memory.dmp

          memory/4236-221-0x0000000000010000-0x00000000000C0000-memory.dmp

          memory/4532-45-0x0000000006150000-0x0000000006300000-memory.dmp

          memory/4532-41-0x0000000005F00000-0x0000000005F96000-memory.dmp

          memory/4532-37-0x0000000003D90000-0x0000000003D9C000-memory.dmp

          memory/4532-33-0x0000000003D50000-0x0000000003D7E000-memory.dmp

          memory/5032-6-0x0000000003560000-0x0000000003588000-memory.dmp

          memory/5032-4-0x00000000034D0000-0x0000000003566000-memory.dmp

          memory/5032-3-0x0000000074C90000-0x000000007544C000-memory.dmp

          memory/5032-7-0x0000000005A10000-0x0000000005BC0000-memory.dmp

          memory/5032-2-0x0000000001AA0000-0x0000000001AAC000-memory.dmp

          memory/5032-1-0x0000000001A70000-0x0000000001A78000-memory.dmp

          memory/5032-0-0x0000000074CA2000-0x0000000074CA3000-memory.dmp

          memory/5032-5-0x0000000074C90000-0x000000007544C000-memory.dmp

          memory/5032-13-0x0000000074C90000-0x000000007544C000-memory.dmp

          memory/5032-9-0x0000000074C90000-0x000000007544C000-memory.dmp

          memory/5032-8-0x0000000006180000-0x000000000673A000-memory.dmp

          memory/5032-11-0x0000000074C90000-0x000000007544C000-memory.dmp