Analysis

  • max time kernel
    148s
  • max time network
    129s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    31/08/2026, 00:11

General

  • Target
    ScreenConnect.ClientSetup.msi
  • Size 9.8MB
  • Sample260831-agw3maea55
  • SHA256 534ab926c91bc8bf9b9081330b91b480d18af2de66ad0dda4be681e8206747ae
  • 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.

  • 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 9 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:4644
  • 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:4164
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding 09548E878B3A4BEE0335EFAE24B7A60F C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:4844
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI2FA1.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240726359 1 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:3992
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI364A.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240727671 10 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.CheckMsiMotw
        3⤵
        • Badlisted process makes network request
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:4364
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI3D21.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240729640 17 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.CheckMsiFileName
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:4416
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:4328
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding BC4E0F0D6A091DB915010B99AB7673D6
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:1616
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding AA78D05C55C069001F6AFB8A55D359FB E Global\MSI0000
        2⤵
        • Loads dropped DLL
        • Drops file in Windows directory
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:4128
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:3216
    • C:\Program Files (x86)\ScreenConnect Client (ceb4683ccc458cec)\ScreenConnect.ClientService.exe
      "C:\Program Files (x86)\ScreenConnect Client (ceb4683ccc458cec)\ScreenConnect.ClientService.exe" "?e=Access&y=Guest&h=instance-sw785a-relay.screenconnect.com&p=443&s=e96c5ffd-6954-4573-a87e-57ec885e6a02&k=BgIAAACkAABSU0ExAAgAAAEAAQBFggCYhR9EuRjFQ%2b8xzdgR8246h3kYjLpvcMBXcvkAQbnQkv5zuUQwV7N4WiwvoOQXzxQUOgjczLI1WKYAD16VLW8zGcbmvc%2f1v8e1hlcIl1IFxyvtyONaXKYfKhOrs8ITPJgntTwr0FYolbH762LPxrpnjNrTQ%2bpsNn5qKI%2fx6PnBQiEwVWc36jjfxX42BbnLTTSxMQqnbhhtz219x8UnPL2Fav%2fSU9P5sg1Xa619BeDkStB7lfYnyuI7cJwgp295LGjiDpJXSUvUUJqm149hOQC1C4Thwwem%2bADwRiItiDLa%2b4UKb7NiEOUUFlGT%2bbbnqC5LZyFd9IWSLDfkiynS"
      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:3724
      • C:\Program Files (x86)\ScreenConnect Client (ceb4683ccc458cec)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (ceb4683ccc458cec)\ScreenConnect.WindowsClient.exe" "RunRole" "c7628fbb-d124-415c-a892-cad74690b34e" "User"
        2⤵
        • Executes dropped EXE
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        PID:3024
      • C:\Program Files (x86)\ScreenConnect Client (ceb4683ccc458cec)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (ceb4683ccc458cec)\ScreenConnect.WindowsClient.exe" "RunRole" "4ae9e4f4-a447-455d-8502-4dbeb697c809" "System"
        2⤵
        • Executes dropped EXE
        • Checks processor information in registry
        • Modifies data under HKEY_USERS
        PID:5408

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

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          Downloads

          e599552.rbs

          • Path C:\Config.Msi\e599552.rbs
          • Size 214KB
          • SHA256 d2096a374e1bc30b29f4687908de93647743f88b3ca71575cfa92c26288af218
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.en-US.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (ceb4683ccc458cec)\Client.en-US.resources
          • Size 64KB
          • SHA256 a90983b3d26f9e6bb472663b84d13254349f62b0ad4c667fd76b3edd270240b2
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (ceb4683ccc458cec)\Client.resources
          • Size 6KB
          • SHA256 bd34378ad99f7609fa0c7c8edde6337c738a61d288863015629329806a1cc728
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Client.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (ceb4683ccc458cec)\ScreenConnect.Client.dll
          • Size 412KB
          • SHA256 8e5531c2b302f9c95ed32ac7481d3535b6d51147257d317686c07ea1a9cb8362
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (ceb4683ccc458cec)\ScreenConnect.ClientService.dll
          • Size 92KB
          • SHA256 ed32fe0d924959020cbef0534a7ba612e94263ccc74837475f3b5a6a726acad0
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (ceb4683ccc458cec)\ScreenConnect.ClientService.exe
          • Size 93KB
          • SHA256 16b4c273a25526e7262716ebe9d46480962347191a034595f18be740d9ce1e17
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (ceb4683ccc458cec)\ScreenConnect.Core.dll
          • Size 579KB
          • SHA256 f64cb7ab5f105c22348a22e02dd506ff45456884639fee0f322862112860af24
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (ceb4683ccc458cec)\ScreenConnect.Windows.dll
          • Size 1.7MB
          • SHA256 c50d6e8d93ed197dd0cfb647743b42a2a6a9289f6db04092f56cefd6d569663e
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsAuthenticationPackage.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (ceb4683ccc458cec)\ScreenConnect.WindowsAuthenticationPackage.dll
          • Size 254KB
          • SHA256 a5b8f0070201e4f26260af6a25941ea38bd7042aefd48cd68b9acf951fa99ee5
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsClient.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (ceb4683ccc458cec)\ScreenConnect.WindowsClient.exe
          • Size 678KB
          • SHA256 2ad8f126461607aad3fa31a41f1f39bc74f471fd84191b43e205610db2c4cf09
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsClient.exe.config

          • Path C:\Program Files (x86)\ScreenConnect Client (ceb4683ccc458cec)\ScreenConnect.WindowsClient.exe.config
          • Size 266B
          • SHA256 87c640d3184c17d3b446a72d5f13d643a774b4ecc7afbedfd4e8da7795ea8077
          • MD5 SHA1 SHA512 TLSH

          ScreenConnect.WindowsCredentialProvider.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (ceb4683ccc458cec)\ScreenConnect.WindowsCredentialProvider.dll
          • Size 837KB
          • SHA256 4868b7997b9b4260be2df752a81a750388243cdbea37e4d82a9e0101cd29d0c7
          • MD5 SHA1 SHA512 SSDEEP TLSH

          system.config

          • Path C:\Program Files (x86)\ScreenConnect Client (ceb4683ccc458cec)\system.config
          • Size 960B
          • SHA256 3884edd691c7ad3c4de35d83b51d50051b600453fdc70916ef55971c538a77d4
          • MD5 SHA1 SHA512 TLSH

          MSI2FA1.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\MSI2FA1.tmp
          • Size 1.1MB
          • SHA256 de867af8055f81b7691f12175deb4c4e7f3bf97130e51761ed02182b0496e16f
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Microsoft.Deployment.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI2FA1.tmp-\Microsoft.Deployment.WindowsInstaller.dll
          • Size 172KB
          • SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI2FA1.tmp-\ScreenConnect.Core.dll
          • Size 569KB
          • SHA256 e92d94613443befebb55b08f80d10a2fdbfc58233e8dc95cfb4466fde12964f7
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.InstallerActions.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI2FA1.tmp-\ScreenConnect.InstallerActions.dll
          • Size 24KB
          • SHA256 d827d3575ca29f8a40ea5379c7df2b315fc72cbd93451de94e199740594b51bb
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI2FA1.tmp-\ScreenConnect.Windows.dll
          • Size 1.7MB
          • SHA256 320b89343e896a8d2ebf537861d800a9aca88245cc3b5616bb5bea5cc6797fbb
          • MD5 SHA1 SHA512 SSDEEP TLSH

          CustomAction.config

          • Path C:\Users\Admin\AppData\Local\Temp\MSI364A.tmp-\CustomAction.config
          • Size 234B
          • SHA256 7027b69ab6ebc9f3f7d2f6c800793fde2a057b76010d8cfd831cf440371b2b23
          • MD5 SHA1 SHA512 TLSH

          ScreenConnect.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI364A.tmp-\ScreenConnect.WindowsInstaller.dll
          • Size 137KB
          • SHA256 dbf379b93127345a83282380aee634d0b70ec731acfeea76617c76e76fdc764f
          • MD5 SHA1 SHA512 SSDEEP TLSH

          MSI9DBE.tmp

          • Path C:\Windows\Installer\MSI9DBE.tmp
          • Size 202KB
          • SHA256 3cff4ac91288a0ff0c13278e73b282a64e83d089c5a61a45d483194ab336b852
          • MD5 SHA1 SHA512 SSDEEP TLSH

          e599551.msi

          • Path C:\Windows\Installer\e599551.msi
          • Size 9.8MB
          • SHA256 534ab926c91bc8bf9b9081330b91b480d18af2de66ad0dda4be681e8206747ae
          • MD5 SHA1 SHA512 SSDEEP TLSH

          eu1udmfa.newcfg

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (ceb4683ccc458cec)\eu1udmfa.newcfg
          • Size 884B
          • SHA256 e4b450362a4c7c95ca6bbb1aa5e0f0a8f4eac11eb172ffed28f696125c935e49
          • MD5 SHA1 SHA512 TLSH

          njhdv50y.newcfg

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (ceb4683ccc458cec)\njhdv50y.newcfg
          • Size 683B
          • SHA256 10372603a5c5cfb986db154c27d22098d397e0477b0a7b93ff094f2f5a989c3e
          • MD5 SHA1 SHA512 TLSH

          user.config

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (ceb4683ccc458cec)\user.config
          • Size 520B
          • SHA256 c3c591681429c841604119db94e32aa9810266244c96780838f754310d3e938d
          • MD5 SHA1 SHA512 TLSH

          {fa5109ab-7397-4c2a-827a-eb57f9da45ea}_OnDiskSnapshotProp

          • Path \??\Volume{c61fa831-0000-0000-0000-d08302000000}\System Volume Information\SPP\OnlineMetadataCache\{fa5109ab-7397-4c2a-827a-eb57f9da45ea}_OnDiskSnapshotProp
          • Size 6KB
          • SHA256 5ff060325d8c5a062be457abe83ea3e60d94572c0e1d8a1cbd07ffa31a33477a
          • MD5 SHA1 SHA512 SSDEEP TLSH

          memory/3024-214-0x0000000001910000-0x0000000001951000-memory.dmp

          memory/3024-213-0x000000001C660000-0x000000001C7E8000-memory.dmp

          memory/3024-212-0x00000000018F0000-0x000000000190A000-memory.dmp

          memory/3024-211-0x000000001C320000-0x000000001C4D0000-memory.dmp

          memory/3024-210-0x000000001C0D0000-0x000000001C164000-memory.dmp

          memory/3024-207-0x0000000000FD0000-0x000000000107E000-memory.dmp

          memory/3024-208-0x0000000003460000-0x00000000034CC000-memory.dmp

          memory/3724-141-0x0000000001FC0000-0x0000000001FDA000-memory.dmp

          memory/3724-184-0x00000000048A0000-0x000000000490C000-memory.dmp

          memory/3724-187-0x0000000004830000-0x0000000004871000-memory.dmp

          memory/3724-151-0x0000000004940000-0x0000000004AF0000-memory.dmp

          memory/3724-147-0x00000000046E0000-0x0000000004774000-memory.dmp

          memory/3724-165-0x00000000047E0000-0x0000000004830000-memory.dmp

          memory/3724-185-0x0000000004B90000-0x0000000004C22000-memory.dmp

          memory/3724-189-0x0000000004D80000-0x0000000004E56000-memory.dmp

          memory/3992-21-0x0000000005860000-0x000000000588E000-memory.dmp

          memory/3992-33-0x0000000005BB0000-0x0000000005D60000-memory.dmp

          memory/3992-34-0x0000000006320000-0x00000000068DA000-memory.dmp

          memory/3992-25-0x00000000058A0000-0x00000000058AC000-memory.dmp

          memory/3992-29-0x0000000005960000-0x00000000059F4000-memory.dmp

          memory/4164-153-0x000001DCE38C0000-0x000001DCE4264000-memory.dmp

          memory/4364-64-0x0000000005DE0000-0x0000000005E08000-memory.dmp