Analysis

  • max time kernel
    149s
  • max time network
    142s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260911-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    29/10/2026, 18:24

General

  • Target
    ScreenConnect.ClientSetup.msi
  • Size 14.0MB
  • Sample261029-w2celsdz21
  • SHA256 54809cd170349fab525aaea518434cb9980febd246f8db8442808cdb4b66223f
  • 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.

  • 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 18 IoCs
  • Drops file in Windows directory 17 IoCs
  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 42 IoCs
  • Event Triggered Execution: Installer Packages 2 TTPs 1 IoCs
  • 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 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:5380
  • 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:4924
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding B6C56918BD82467220F92398EE24F5CB C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:5820
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSIADE.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240782453 1 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:2956
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI12AF.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240784406 11 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:3240
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI1B2C.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240786281 18 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.CheckMsiFileName
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:4516
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:3052
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 56EDA2788A43B359409CC5C75CB9010A
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:2152
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding AEBB3215B8A2BEB1C0DE2918AE1C2ECF E Global\MSI0000
        2⤵
        • Drops file in Windows directory
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:5236
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:1320
    • C:\Program Files (x86)\ScreenConnect Client (67d11651ec92f0b0)\ScreenConnect.ClientService.exe
      "C:\Program Files (x86)\ScreenConnect Client (67d11651ec92f0b0)\ScreenConnect.ClientService.exe" "?e=Access&y=Guest&h=instance-cy3h6p-relay.screenconnect.com&p=443&s=040513a4-6aca-4731-84e8-78bdaf907573&k=BgIAAACkAABSU0ExAAgAAAEAAQCBOnJjt4T2fsl5StyG8GIcj9tY4N3ONg3oxxUk%2fXlWpbksXL8ymck52sjAg57KiD%2fzXl%2fRnJYz%2bCdE8cQUEopSuI6Rh%2bBW2nBSyPGTqR7e2JbbBPWI4AxMTQbA0%2bvvsNtc1MuQhRKzdMJ%2bCSCwKB6Bw7RplwxeN0FX8LJmoRt8D70DxsgQMTBEyll8aP08QJo1YL0%2b5sMoRiZHI5onHI2Yx5cGJNSSl09hPcwskKC7p1wLI%2bxhqmsWV7DfIrnlKotcvShHT4OP1Kq5tL0sE0vnvxtkvPnTA1fYkBu2C2Kf8MMHTvkMlUXnmzYWoPw1ksxXn4xId872U6DbYk3tsx6l&c=adobe&c=&c=&c=&c=&c=&c=&c="
      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:2596
      • C:\Program Files (x86)\ScreenConnect Client (67d11651ec92f0b0)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (67d11651ec92f0b0)\ScreenConnect.WindowsClient.exe" "RunRole" "ba997f5d-d257-4ac0-bbff-df990f75e7b2" "User"
        2⤵
        • Executes dropped EXE
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        PID:3032
      • C:\Program Files (x86)\ScreenConnect Client (67d11651ec92f0b0)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (67d11651ec92f0b0)\ScreenConnect.WindowsClient.exe" "RunRole" "310800e6-17f7-457e-8e46-c9d17a4f08bd" "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:1624

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

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          Downloads

          e5a8109.rbs

          • Path C:\Config.Msi\e5a8109.rbs
          • Size 214KB
          • SHA256 c3ae9a6d9f173c21e7c39ca41d94f1c97bb9d8dc26ee578fdb71ccf27c681894
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.Override.en-US.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (67d11651ec92f0b0)\Client.Override.en-US.resources
          • Size 256B
          • SHA256 28b9226583d81800feaa9909bd0b0bf8a44bcbd97e66246c1d17162582fd46b3
          • MD5 SHA1 SHA512 TLSH

          Client.Override.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (67d11651ec92f0b0)\Client.Override.resources
          • Size 512B
          • SHA256 ef136b23db5fdea264728606ee311a10c602300e829992f17b8f943473a85f78
          • MD5 SHA1 SHA512 TLSH

          Client.en-US.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (67d11651ec92f0b0)\Client.en-US.resources
          • Size 64KB
          • SHA256 a90983b3d26f9e6bb472663b84d13254349f62b0ad4c667fd76b3edd270240b2
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (67d11651ec92f0b0)\Client.resources
          • Size 6KB
          • SHA256 bd34378ad99f7609fa0c7c8edde6337c738a61d288863015629329806a1cc728
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Client.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (67d11651ec92f0b0)\ScreenConnect.Client.dll
          • Size 412KB
          • SHA256 27e873d0fceefdd1a12ca77e3bbecec2ece7acdba433b47dca102c35e1c5896c
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (67d11651ec92f0b0)\ScreenConnect.ClientService.dll
          • Size 92KB
          • SHA256 78fa9cf69577f6990275c7c472f7114f9d0c85e660f3b9c81b085fc3cfbc8673
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (67d11651ec92f0b0)\ScreenConnect.ClientService.exe
          • Size 93KB
          • SHA256 5956f9afb3ba610c38b2cfda88dd15be98783963769a12020c93ce05e749b3c3
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (67d11651ec92f0b0)\ScreenConnect.Core.dll
          • Size 582KB
          • SHA256 4eab8752d05cd31bafd07edde7d18061cb63eea99af3132460e6dc08bb5f9e73
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (67d11651ec92f0b0)\ScreenConnect.Windows.dll
          • Size 1.7MB
          • SHA256 ec4de5e6e9c079a30a5780d79ee662e0a4c6d009f0e3f911edc560973fb17d1e
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsAuthenticationPackage.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (67d11651ec92f0b0)\ScreenConnect.WindowsAuthenticationPackage.dll
          • Size 254KB
          • SHA256 a5b8f0070201e4f26260af6a25941ea38bd7042aefd48cd68b9acf951fa99ee5
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsClient.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (67d11651ec92f0b0)\ScreenConnect.WindowsClient.exe
          • Size 685KB
          • SHA256 2763b953657e3c4d6b2f952218a1e1963bcd6971f0b1102d99bb7efea04ceb29
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsClient.exe.config

          • Path C:\Program Files (x86)\ScreenConnect Client (67d11651ec92f0b0)\ScreenConnect.WindowsClient.exe.config
          • Size 266B
          • SHA256 87c640d3184c17d3b446a72d5f13d643a774b4ecc7afbedfd4e8da7795ea8077
          • MD5 SHA1 SHA512 TLSH

          ScreenConnect.WindowsCredentialProvider.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (67d11651ec92f0b0)\ScreenConnect.WindowsCredentialProvider.dll
          • Size 837KB
          • SHA256 7511e679597572782241ff989c065c02f9f5a12ab37290b69a27226eda57ce75
          • MD5 SHA1 SHA512 SSDEEP TLSH

          system.config

          • Path C:\Program Files (x86)\ScreenConnect Client (67d11651ec92f0b0)\system.config
          • Size 962B
          • SHA256 cefceb0fc236d53b692fea3ab58feed07a8dc0857f0044cf263779b73d848c2f
          • MD5 SHA1 SHA512 TLSH

          CustomAction.config

          • Path C:\Users\Admin\AppData\Local\Temp\MSI12AF.tmp-\CustomAction.config
          • Size 234B
          • SHA256 7027b69ab6ebc9f3f7d2f6c800793fde2a057b76010d8cfd831cf440371b2b23
          • MD5 SHA1 SHA512 TLSH

          ScreenConnect.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI12AF.tmp-\ScreenConnect.WindowsInstaller.dll
          • Size 137KB
          • SHA256 361bbc692084841e4c8d22c89ca89c711d0fe17bc8759241736531a2f28de25b
          • MD5 SHA1 SHA512 SSDEEP TLSH

          MSIADE.tmp

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

          Microsoft.Deployment.WindowsInstaller.dll

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

          ScreenConnect.Core.dll

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

          ScreenConnect.InstallerActions.dll

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

          ScreenConnect.Windows.dll

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

          MSI88CA.tmp

          • Path C:\Windows\Installer\MSI88CA.tmp
          • Size 202KB
          • SHA256 3cff4ac91288a0ff0c13278e73b282a64e83d089c5a61a45d483194ab336b852
          • MD5 SHA1 SHA512 SSDEEP TLSH

          e5a810a.msi

          • Path C:\Windows\Installer\e5a810a.msi
          • Size 14.0MB
          • SHA256 54809cd170349fab525aaea518434cb9980febd246f8db8442808cdb4b66223f
          • MD5 SHA1 SHA512 SSDEEP TLSH

          j5wiyug0.newcfg

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (67d11651ec92f0b0)\j5wiyug0.newcfg
          • Size 882B
          • SHA256 d8bc3f7b6e12154dfa97e88ff05c3b67b908e44d070be0cdcf406356797ed7ae
          • MD5 SHA1 SHA512 TLSH

          ot0w43gm.newcfg

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (67d11651ec92f0b0)\ot0w43gm.newcfg
          • Size 683B
          • SHA256 96ab5eeda3b0f4ee413081d0647a56fbcf1c68336789a86f19ceab48d9dafe8b
          • MD5 SHA1 SHA512 TLSH

          user.config

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (67d11651ec92f0b0)\user.config
          • Size 520B
          • SHA256 9e2363ecbb2bdf58e10833cf504028cf06f5df681162472d625870fa467baa83
          • MD5 SHA1 SHA512 TLSH

          memory/1624-222-0x000000001CE90000-0x000000001D05A000-memory.dmp

          memory/2596-167-0x0000000003F40000-0x0000000003F90000-memory.dmp

          memory/2596-188-0x0000000004000000-0x000000000406C000-memory.dmp

          memory/2596-191-0x0000000003F90000-0x0000000003FD1000-memory.dmp

          memory/2596-193-0x0000000004300000-0x00000000043D6000-memory.dmp

          memory/2596-163-0x0000000003D90000-0x0000000003F40000-memory.dmp

          memory/2596-189-0x0000000004110000-0x00000000041A2000-memory.dmp

          memory/2596-159-0x0000000003B40000-0x0000000003BD6000-memory.dmp

          memory/2596-143-0x0000000003A80000-0x0000000003A9A000-memory.dmp

          memory/2956-29-0x0000000005AE0000-0x0000000005B76000-memory.dmp

          memory/2956-34-0x00000000064A0000-0x0000000006A5A000-memory.dmp

          memory/2956-33-0x0000000005D30000-0x0000000005EE0000-memory.dmp

          memory/2956-25-0x00000000039F0000-0x00000000039FC000-memory.dmp

          memory/2956-21-0x0000000005A10000-0x0000000005A3E000-memory.dmp

          memory/3032-215-0x0000000000930000-0x00000000009E0000-memory.dmp

          memory/3032-216-0x000000001B5A0000-0x000000001B60C000-memory.dmp

          memory/3032-217-0x000000001B9C0000-0x000000001BA56000-memory.dmp

          memory/3032-218-0x000000001BC10000-0x000000001BDC0000-memory.dmp

          memory/3032-219-0x0000000002B00000-0x0000000002B1A000-memory.dmp

          memory/3032-220-0x000000001BF50000-0x000000001C0D8000-memory.dmp

          memory/3032-223-0x000000001CF30000-0x000000001D0FA000-memory.dmp

          memory/3240-64-0x0000000005FF0000-0x0000000006018000-memory.dmp